In this article, the names of 3 varieties of Monarda didyma L., which are considered to be introduced species, some indicators of the water regime in the climatic conditions of Uzbekistan: the amount of water in the l...In this article, the names of 3 varieties of Monarda didyma L., which are considered to be introduced species, some indicators of the water regime in the climatic conditions of Uzbekistan: the amount of water in the leaves, water deficit, water storage capacity were studied in spring and summer, and seasonal changes were determined. According to these indicators of the water regime, the studied varieties belong to the labile water regime, high green mass (centner), seed yield (how many grams), resistance to diseases and pests have been determined, which shows that it is promising for introduction in the conditions of our republic. Therefore, it is recommended to breed these varieties in the foothills and hilly regions of Uzbekistan, where the amount of precipitation is more than 400 - 500 mm.展开更多
Seed germination (in laboratory and field conditions) and vegetative reproduction (by cuttings) of a promising decorative species—Lonicera tatarica L. (Caprifoliaceae Juss.) was studied for the first time in the cond...Seed germination (in laboratory and field conditions) and vegetative reproduction (by cuttings) of a promising decorative species—Lonicera tatarica L. (Caprifoliaceae Juss.) was studied for the first time in the conditions of introduction of the Tashkent Botanical Garden of Uzbekistan. Thus, the optimal temperature for germination of L. tatarica seeds in laboratory conditions is +20°C + 22°C, at which germination was 73%. The germination rate of seeds sown in autumn in the field was 62%, and the germination rate of seeds sown in spring was 71%. It was noted that in greenhouse conditions at an air temperature of 20°C - 22°C and a relative humidity of 49% - 53%, the rootability of cuttings was 75%. It was revealed that the studied species adapted well to the conditions of introduction. Taking into account the effectiveness of vegetative reproduction of L. tatarica, it can be recommended for improving the aesthetic condition and landscaping of cities, landscaping and landscape design.展开更多
The initial stages of the ontogenesis of <i>Capparis</i> <i>spinosa</i> L. (Capparidaceae) were studied for the first time in the conditions of the Tashkent Botanical Garden of the Republic of ...The initial stages of the ontogenesis of <i>Capparis</i> <i>spinosa</i> L. (Capparidaceae) were studied for the first time in the conditions of the Tashkent Botanical Garden of the Republic of Uzbekistan. In plants, the seed peel is very dense and hard. Therefore, in laboratory and field conditions, the germination of seeds is low. In natural conditions, the seeds of mature fruits do not germinate for a long time (4 - 5 years). The seeds after undergoing cold stratification gave positive results (70% - 80%). Also, information is given about the nature of the use of its useful properties in the national economy as both forage, medicinal, and honey-bearing use. Plants are quite resistant to xerothermic factors, parasites and diseases. <i>Capparis</i> <i>spinosa</i> is a very promising plant adapted to various environmental conditions and can be used for degraded pastures of desert and foothill regions of the Republic of Uzbekistan.展开更多
The ontogenesis of the form Biota orientalis compacta (Cupressaceae) was first studied in the conditions of introduction of the Tashkent Botanical Garden. The passage of periods and stages of ontogenesis, full ripenin...The ontogenesis of the form Biota orientalis compacta (Cupressaceae) was first studied in the conditions of introduction of the Tashkent Botanical Garden. The passage of periods and stages of ontogenesis, full ripening of the cones, a high rate of growth and development, as well as high seed productivity are the main indicators of the success and prospects of the introduction of the form Biota orientalis compacta. The data obtained will serve as a theoretical basis for the agrotechnical development in landscaping.展开更多
The article presents the results of research carried out by light microscopy of the anatomical structure of vegetative organs (leaf, root and stem) Lavandula officinalis Chaix of the family Lamiaceae introduced into t...The article presents the results of research carried out by light microscopy of the anatomical structure of vegetative organs (leaf, root and stem) Lavandula officinalis Chaix of the family Lamiaceae introduced into the conditions of the Tashkent Botanical Garden of the Republic of Uzbekistan. Our studies have shown that the presence or absence of trichomes can serve as an informative sign. In L. officinalis trichomes are simple unicellular two-terminal;three-terminal and multi-terminal. Lavender leaf hairs accumulate essential oils under the cuticle of secreting cells, the cuticle are tightly attached to the membranes of the secretory cells due to the absence of excretion products. Based on the results of a study of the morphological and anatomical features of the leaf of L. officinalis, it has been established that the forms of covering hairs and essential oil glands are of diagnostic value. In the epidermal, palisade and cortex parenchymal cells of the vegetative organs, yellow-orange essential (lavender) oil is noted. Identified diagnostic features that can be used in taxonomy and can be used to identify plant materials can also be used to develop indicators of authenticity in this type of raw material.展开更多
The article presents the results of variety studies on the decorative and economic-biological characteristics of </span><i><span style="font-family:Verdana;">Hibiscus syriacus</span>&...The article presents the results of variety studies on the decorative and economic-biological characteristics of </span><i><span style="font-family:Verdana;">Hibiscus syriacus</span></i><span style="font-family:Verdana;"> L. in the conditions of Tashkent. It is established that the soil and climatic conditions of Tashkent are quite favorable for the cultivation of Syrian hibiscus. As a result of a comprehensive assessment, the most promising, promising and fewer promising varieties were identified. It is noted that the most promising</span></span><span style="font-family:Verdana;">—</span><span style="font-family:""><span style="font-family:Verdana;">both forms and the </span><i><span style="font-family:Verdana;">Speciosus</span></i><span style="font-family:Verdana;"> variety are characterized by better adaptability. Promising varieties—</span><i><span style="font-family:Verdana;">Luce</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Red Heart</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Russian Violet</span></i><span style="font-family:Verdana;"> in a short time were able to adapt to </span><span style="font-family:Verdana;">new conditions, and were able to maintain their decorative and biological</span><span style="font-family:Verdana;"> qualities. </span><i><span style="font-family:Verdana;">Pink Flirt</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Rubis</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">Totus Albus</span></i><span style="font-family:Verdana;"> are among the less promising varieties. These varieties were introduced to Uzbekistan in recent years and have not yet been able to fully adapt. The Aphrodite variety, which is part of the group of less promising varieties, has not been able to sufficiently show decorative and economic and biological qualities for a long time.展开更多
For the first time, work was carried out on the vegetative reproduction of <i><span style="font-family:Verdana;">Weigela florida </span></i><span style="font-family:Verdana;&q...For the first time, work was carried out on the vegetative reproduction of <i><span style="font-family:Verdana;">Weigela florida </span></i><span style="font-family:Verdana;">f.</span><i> </i><span style="font-family:Verdana;">“</span><i><span style="font-family:Verdana;">Bristol Rubru</span></i><span style="font-family:Verdana;">” (Caprifoliaceae) was introduced into the Tashkent Botanical Garden (Uzbekistan) through green branches. As a result of the research conducted, it was noted that the vegetative reproduction possibil</span><span><span style="font-family:Verdana;">ities of the “</span><i><span style="font-family:Verdana;">Bristol Ruby</span></i><span style="font-family:Verdana;">” form of </span><i><span style="font-family:Verdana;">Weigela florida</span></i><span style="font-family:Verdana;"> were high. W</span></span><span style="font-family:Verdana;">hen placed on stimulants of two types (kornevin, heteroauxin), it became known that kornevin stimulants are effective in taking root. It was found that the effective way to multiply this form by green branches in a vegetative way—when placed on the stimulator of kornevin from the middle part of the rod, the indicators of root extraction of the cuttings were 93.3%, which is more effective than other options. When vegetative reproduction of this decorative form, it is recommended that the seedlings come to the standard state in 3 - 4 years and the root extraction indicators are high—this is its use as the second row shrubs in the case of growing on strongly saline soils in the conditions of Uzbekistan. The cultivation of green cuttings of the form in the fog showed that they are more effective than in the open ground.</span>展开更多
First studied the anatomy of the leaf Allium suworowii in different ecological conditions: Jizzakh region and the Tashkent Botanical Garden named after academician F.N. Rusanov at the Institute of Botany of the Academ...First studied the anatomy of the leaf Allium suworowii in different ecological conditions: Jizzakh region and the Tashkent Botanical Garden named after academician F.N. Rusanov at the Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan. Identifying diagnostic signs of the leaf and determining a different combination of xeromorphic and mesomorphic features ensure adaptation to habitat conditions. Under the conditions that nature mesomorphic signs predominate, and introduction-xeromorphic signs prevail, this indicates that they are adapted to the conditions of introduction of this species.展开更多
Central Asia is one of the main centers of origin of bulbous geophytes, including the family Amaryllidaceae Juss. The anatomical features of many endemic, red-book bulbous geophytes are still poorly understood. The ar...Central Asia is one of the main centers of origin of bulbous geophytes, including the family Amaryllidaceae Juss. The anatomical features of many endemic, red-book bulbous geophytes are still poorly understood. The article presents the results of a structural study of the inflated part of the stem (fistular), stem and pedicels of an endemic A. praemixtum species grow in two different environmental conditions in the Aktau mountain Nurata Range (Uzbekistan, Province Navoi) and in the conditions of introduction in the Tashkent Botanical Garden (Uzbekistan, Tashkent city). Diagnostic signs of vegetative organs were revealed and various combinations of xeromorphic and mesomorphic signs were determined. Comparative anatomical study of vegetative organs of A. praemixtum is of great theoretical and practical importance in relation to taxonomy and ecology.展开更多
The research results of environment impact on growth and development of Polygonatum odoratum (Mill.) Druce and Polygonatum severtzowii Regel species are given in the article. The effect of light intensity, temperature...The research results of environment impact on growth and development of Polygonatum odoratum (Mill.) Druce and Polygonatum severtzowii Regel species are given in the article. The effect of light intensity, temperature and humidity factors was noted in the studied species.展开更多
The anatomical structure of the leaf of the Central Asian endemic species of Juno vicaria, growing in two different ecological conditions (Baysun Mountains of Surkhandary region and Tashkent Botanical Garden of Uzbeki...The anatomical structure of the leaf of the Central Asian endemic species of Juno vicaria, growing in two different ecological conditions (Baysun Mountains of Surkhandary region and Tashkent Botanical Garden of Uzbekistan) was analyzed and diagnostic signs were determined. Also identified are adaptive mesomorphic and xeromorphic signs from an environmental point of view. A species that grows in natural habitat is dominated by more xeromorphic signs: a thickened outer wall of the epidermis;numerous epidermal, spongy cells;submerged stomata;small, multi-row sclerenchymal and collenchymal cells, which indicate a more xeromorphic and adaptability, as well as the wide distribution of this species to the natural growing conditions. In a species growing under the conditions of introduction of the Tashkent Botanical Garden, more mesomorphic features predominate: thin-walled, large, few epidermal, spongy cells;not immersed stomata;large non multi-row sclerenchymal and collenchymal cells, which show that the species is adapted to altered habitat conditions.展开更多
The article is devoted to the study of the biomorphological features of Elytrigia trichophora under conditions of introduction in the mountain semi-desert zone and the determination of their economic prospects for int...The article is devoted to the study of the biomorphological features of Elytrigia trichophora under conditions of introduction in the mountain semi-desert zone and the determination of their economic prospects for introduction into rainfed crops. The research results showed that, in the Tashkent area, the number of generative shoots is almost the same, but they are 30 - 31 cm long and the number of partial bushes is 4 - 5 more than in Chartak. The root system lengthens by 18 - 25 cm per year, and the number of roots of the first order in the third year of vegetation increases to 93.6 ± 2.31 pieces, they branch up to the III-IV order. The duration of medium-aged generative plants in the Chartak area is 5 - 6 years, and in the Tashkent area, it is 1 - 2 years longer.展开更多
The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdan...The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;"> growing in natural conditions in Uzbekistan are presented for the first time. During the study of the desert representative </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;">, the following diagnostic, structural features were revealed: ribbing of the peduncle and pedicel;thickening of the outer wall of the epidermis and wavy folding of the cuticle of the parenchymal-bundle type of structure</span><span><span style="font-family:Verdana;">;deep submergence of stomata: extensive core: </span><span style="font-family:Verdana;">thinness</span><span style="font-family:Verdana;"> of the crustal parenchyma, the presence of lactic acid in it;the presence of a highly </span><span style="font-family:Verdana;">sclerified</span> <span style="font-family:Verdana;">sclerinchymal</span><span style="font-family:Verdana;"> ring between the crustal parenchyma and the central cylinder: the vastness of the core and the presence of </span><span style="font-family:Verdana;">hydrocytic</span><span style="font-family:Verdana;"> cells in it, as well as the similarity of the structure of </span></span><span style="font-family:Verdana;">the stem and pedicel. In this species, a predominance of xeromorphic characters was noted, due to a tendency indicating </span><span style="font-family:Verdana;">xerophilization</span><span style="font-family:Verdana;"> and adaptation to desert conditions. In </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;">, the following mesomorphic diagnostic structural features, opposite to the desert one, were also revealed: </span><span style="font-family:Verdana;">roundness</span><span style="font-family:Verdana;"> of the stem and pedicel, dense folding of the cuticle surface, the presence of lactates in the crustal parenchyma, weak thickening of the crustal parenchyma, and the presence of a weakly </span><span style="font-family:Verdana;">sclerized</span> <span style="font-family:Verdana;">sclerenchymal</span><span style="font-family:Verdana;"> ring in the central color parenchyma: </span><span style="font-family:Verdana;">parenchymal-bundle</span><span style="font-family:Verdana;"> type of structure, weak thickening of the outer wall of the epidermis and slightly waviness of the cuticle surface, the presence of lactic acid in the crustal parenchyma. Weak submergence of stomata, large-cell crustal parenchyma, extensive, large-cell, thin-walled, poorly </span><span style="font-family:Verdana;">sclerified</span><span style="font-family:Verdana;"> central cylinder, also similarity to the structure of the stem with pedicel, but the presence of a cavity in the stem. The predominance of mesomorphic traits in this endemic species indicat</span></span><span style="font-family:Verdana;">ed</span><span style="font-family:Verdana;"> more favorable</span><span style="font-family:""> </span><span style="font-family:Verdana;">mountain humid growing conditions w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> noted.展开更多
In the present paper as estimation of an unknown probability density of the spline-estimation is constructed, necessity and sufficiency conditions of strong consistency of the spline-estimation are given.
利用常规观测资料、区域自动站加密观测资料、NCEP/NCAR逐6 h 1°×1°的再分析资料和FY-2卫星逐时云顶亮温资料,分析2018年5月21日南疆西部极端大暴雨过程的成因。结果表明:100 hPa南亚高压双体型、500 hPa塔什干低涡与贝...利用常规观测资料、区域自动站加密观测资料、NCEP/NCAR逐6 h 1°×1°的再分析资料和FY-2卫星逐时云顶亮温资料,分析2018年5月21日南疆西部极端大暴雨过程的成因。结果表明:100 hPa南亚高压双体型、500 hPa塔什干低涡与贝加尔湖附近低槽“东西夹攻”、低空偏东急流强,为此次大暴雨提供了有利的高低空天气系统配置。副热带西风急流与极锋急流形成的高空强辐散区,在大暴雨区上空与低空偏东风急流左前方强烈的气旋式辐合区叠加,有利于上升运动维持;大暴雨发生前4 h,2个垂直环流圈的上升气流在暴雨区中心上空汇合,使得上升运动进一步增强。极端大暴雨发生前南疆西部整层大气湿润,低层偏西气流与偏东急流在暴雨区中心附近形成强烈辐合,促进了南疆盆地水汽向暴雨区集中和汇聚,同时有利于地面中尺度系统的发展和加强。卫星云图上多个γ中尺度MCS的活动造成本次极端大暴雨,强降水发生在TBB梯度最大的区域,极端大暴雨开始前3 h TBB下降超过30℃,与我国中东部地区局地暴雨发生前TBB的变化特征相似。展开更多
文摘In this article, the names of 3 varieties of Monarda didyma L., which are considered to be introduced species, some indicators of the water regime in the climatic conditions of Uzbekistan: the amount of water in the leaves, water deficit, water storage capacity were studied in spring and summer, and seasonal changes were determined. According to these indicators of the water regime, the studied varieties belong to the labile water regime, high green mass (centner), seed yield (how many grams), resistance to diseases and pests have been determined, which shows that it is promising for introduction in the conditions of our republic. Therefore, it is recommended to breed these varieties in the foothills and hilly regions of Uzbekistan, where the amount of precipitation is more than 400 - 500 mm.
文摘Seed germination (in laboratory and field conditions) and vegetative reproduction (by cuttings) of a promising decorative species—Lonicera tatarica L. (Caprifoliaceae Juss.) was studied for the first time in the conditions of introduction of the Tashkent Botanical Garden of Uzbekistan. Thus, the optimal temperature for germination of L. tatarica seeds in laboratory conditions is +20°C + 22°C, at which germination was 73%. The germination rate of seeds sown in autumn in the field was 62%, and the germination rate of seeds sown in spring was 71%. It was noted that in greenhouse conditions at an air temperature of 20°C - 22°C and a relative humidity of 49% - 53%, the rootability of cuttings was 75%. It was revealed that the studied species adapted well to the conditions of introduction. Taking into account the effectiveness of vegetative reproduction of L. tatarica, it can be recommended for improving the aesthetic condition and landscaping of cities, landscaping and landscape design.
文摘The initial stages of the ontogenesis of <i>Capparis</i> <i>spinosa</i> L. (Capparidaceae) were studied for the first time in the conditions of the Tashkent Botanical Garden of the Republic of Uzbekistan. In plants, the seed peel is very dense and hard. Therefore, in laboratory and field conditions, the germination of seeds is low. In natural conditions, the seeds of mature fruits do not germinate for a long time (4 - 5 years). The seeds after undergoing cold stratification gave positive results (70% - 80%). Also, information is given about the nature of the use of its useful properties in the national economy as both forage, medicinal, and honey-bearing use. Plants are quite resistant to xerothermic factors, parasites and diseases. <i>Capparis</i> <i>spinosa</i> is a very promising plant adapted to various environmental conditions and can be used for degraded pastures of desert and foothill regions of the Republic of Uzbekistan.
文摘The ontogenesis of the form Biota orientalis compacta (Cupressaceae) was first studied in the conditions of introduction of the Tashkent Botanical Garden. The passage of periods and stages of ontogenesis, full ripening of the cones, a high rate of growth and development, as well as high seed productivity are the main indicators of the success and prospects of the introduction of the form Biota orientalis compacta. The data obtained will serve as a theoretical basis for the agrotechnical development in landscaping.
文摘The article presents the results of research carried out by light microscopy of the anatomical structure of vegetative organs (leaf, root and stem) Lavandula officinalis Chaix of the family Lamiaceae introduced into the conditions of the Tashkent Botanical Garden of the Republic of Uzbekistan. Our studies have shown that the presence or absence of trichomes can serve as an informative sign. In L. officinalis trichomes are simple unicellular two-terminal;three-terminal and multi-terminal. Lavender leaf hairs accumulate essential oils under the cuticle of secreting cells, the cuticle are tightly attached to the membranes of the secretory cells due to the absence of excretion products. Based on the results of a study of the morphological and anatomical features of the leaf of L. officinalis, it has been established that the forms of covering hairs and essential oil glands are of diagnostic value. In the epidermal, palisade and cortex parenchymal cells of the vegetative organs, yellow-orange essential (lavender) oil is noted. Identified diagnostic features that can be used in taxonomy and can be used to identify plant materials can also be used to develop indicators of authenticity in this type of raw material.
文摘The article presents the results of variety studies on the decorative and economic-biological characteristics of </span><i><span style="font-family:Verdana;">Hibiscus syriacus</span></i><span style="font-family:Verdana;"> L. in the conditions of Tashkent. It is established that the soil and climatic conditions of Tashkent are quite favorable for the cultivation of Syrian hibiscus. As a result of a comprehensive assessment, the most promising, promising and fewer promising varieties were identified. It is noted that the most promising</span></span><span style="font-family:Verdana;">—</span><span style="font-family:""><span style="font-family:Verdana;">both forms and the </span><i><span style="font-family:Verdana;">Speciosus</span></i><span style="font-family:Verdana;"> variety are characterized by better adaptability. Promising varieties—</span><i><span style="font-family:Verdana;">Luce</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Red Heart</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Russian Violet</span></i><span style="font-family:Verdana;"> in a short time were able to adapt to </span><span style="font-family:Verdana;">new conditions, and were able to maintain their decorative and biological</span><span style="font-family:Verdana;"> qualities. </span><i><span style="font-family:Verdana;">Pink Flirt</span></i><span style="font-family:Verdana;">, </span><i><span style="font-family:Verdana;">Rubis</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">Totus Albus</span></i><span style="font-family:Verdana;"> are among the less promising varieties. These varieties were introduced to Uzbekistan in recent years and have not yet been able to fully adapt. The Aphrodite variety, which is part of the group of less promising varieties, has not been able to sufficiently show decorative and economic and biological qualities for a long time.
文摘For the first time, work was carried out on the vegetative reproduction of <i><span style="font-family:Verdana;">Weigela florida </span></i><span style="font-family:Verdana;">f.</span><i> </i><span style="font-family:Verdana;">“</span><i><span style="font-family:Verdana;">Bristol Rubru</span></i><span style="font-family:Verdana;">” (Caprifoliaceae) was introduced into the Tashkent Botanical Garden (Uzbekistan) through green branches. As a result of the research conducted, it was noted that the vegetative reproduction possibil</span><span><span style="font-family:Verdana;">ities of the “</span><i><span style="font-family:Verdana;">Bristol Ruby</span></i><span style="font-family:Verdana;">” form of </span><i><span style="font-family:Verdana;">Weigela florida</span></i><span style="font-family:Verdana;"> were high. W</span></span><span style="font-family:Verdana;">hen placed on stimulants of two types (kornevin, heteroauxin), it became known that kornevin stimulants are effective in taking root. It was found that the effective way to multiply this form by green branches in a vegetative way—when placed on the stimulator of kornevin from the middle part of the rod, the indicators of root extraction of the cuttings were 93.3%, which is more effective than other options. When vegetative reproduction of this decorative form, it is recommended that the seedlings come to the standard state in 3 - 4 years and the root extraction indicators are high—this is its use as the second row shrubs in the case of growing on strongly saline soils in the conditions of Uzbekistan. The cultivation of green cuttings of the form in the fog showed that they are more effective than in the open ground.</span>
文摘First studied the anatomy of the leaf Allium suworowii in different ecological conditions: Jizzakh region and the Tashkent Botanical Garden named after academician F.N. Rusanov at the Institute of Botany of the Academy of Sciences of the Republic of Uzbekistan. Identifying diagnostic signs of the leaf and determining a different combination of xeromorphic and mesomorphic features ensure adaptation to habitat conditions. Under the conditions that nature mesomorphic signs predominate, and introduction-xeromorphic signs prevail, this indicates that they are adapted to the conditions of introduction of this species.
文摘Central Asia is one of the main centers of origin of bulbous geophytes, including the family Amaryllidaceae Juss. The anatomical features of many endemic, red-book bulbous geophytes are still poorly understood. The article presents the results of a structural study of the inflated part of the stem (fistular), stem and pedicels of an endemic A. praemixtum species grow in two different environmental conditions in the Aktau mountain Nurata Range (Uzbekistan, Province Navoi) and in the conditions of introduction in the Tashkent Botanical Garden (Uzbekistan, Tashkent city). Diagnostic signs of vegetative organs were revealed and various combinations of xeromorphic and mesomorphic signs were determined. Comparative anatomical study of vegetative organs of A. praemixtum is of great theoretical and practical importance in relation to taxonomy and ecology.
文摘The research results of environment impact on growth and development of Polygonatum odoratum (Mill.) Druce and Polygonatum severtzowii Regel species are given in the article. The effect of light intensity, temperature and humidity factors was noted in the studied species.
文摘The anatomical structure of the leaf of the Central Asian endemic species of Juno vicaria, growing in two different ecological conditions (Baysun Mountains of Surkhandary region and Tashkent Botanical Garden of Uzbekistan) was analyzed and diagnostic signs were determined. Also identified are adaptive mesomorphic and xeromorphic signs from an environmental point of view. A species that grows in natural habitat is dominated by more xeromorphic signs: a thickened outer wall of the epidermis;numerous epidermal, spongy cells;submerged stomata;small, multi-row sclerenchymal and collenchymal cells, which indicate a more xeromorphic and adaptability, as well as the wide distribution of this species to the natural growing conditions. In a species growing under the conditions of introduction of the Tashkent Botanical Garden, more mesomorphic features predominate: thin-walled, large, few epidermal, spongy cells;not immersed stomata;large non multi-row sclerenchymal and collenchymal cells, which show that the species is adapted to altered habitat conditions.
文摘The article is devoted to the study of the biomorphological features of Elytrigia trichophora under conditions of introduction in the mountain semi-desert zone and the determination of their economic prospects for introduction into rainfed crops. The research results showed that, in the Tashkent area, the number of generative shoots is almost the same, but they are 30 - 31 cm long and the number of partial bushes is 4 - 5 more than in Chartak. The root system lengthens by 18 - 25 cm per year, and the number of roots of the first order in the third year of vegetation increases to 93.6 ± 2.31 pieces, they branch up to the III-IV order. The duration of medium-aged generative plants in the Chartak area is 5 - 6 years, and in the Tashkent area, it is 1 - 2 years longer.
文摘The results of a comparative study of the structure of some vegetative organs of </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;"> and </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;"> growing in natural conditions in Uzbekistan are presented for the first time. During the study of the desert representative </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">caspium</span></i><span style="font-family:Verdana;">, the following diagnostic, structural features were revealed: ribbing of the peduncle and pedicel;thickening of the outer wall of the epidermis and wavy folding of the cuticle of the parenchymal-bundle type of structure</span><span><span style="font-family:Verdana;">;deep submergence of stomata: extensive core: </span><span style="font-family:Verdana;">thinness</span><span style="font-family:Verdana;"> of the crustal parenchyma, the presence of lactic acid in it;the presence of a highly </span><span style="font-family:Verdana;">sclerified</span> <span style="font-family:Verdana;">sclerinchymal</span><span style="font-family:Verdana;"> ring between the crustal parenchyma and the central cylinder: the vastness of the core and the presence of </span><span style="font-family:Verdana;">hydrocytic</span><span style="font-family:Verdana;"> cells in it, as well as the similarity of the structure of </span></span><span style="font-family:Verdana;">the stem and pedicel. In this species, a predominance of xeromorphic characters was noted, due to a tendency indicating </span><span style="font-family:Verdana;">xerophilization</span><span style="font-family:Verdana;"> and adaptation to desert conditions. In </span><i><span style="font-family:Verdana;">A</span></i><span style="font-family:Verdana;">.</span><i> <span style="font-family:Verdana;">tschimganicum</span></i><span style="font-family:Verdana;">, the following mesomorphic diagnostic structural features, opposite to the desert one, were also revealed: </span><span style="font-family:Verdana;">roundness</span><span style="font-family:Verdana;"> of the stem and pedicel, dense folding of the cuticle surface, the presence of lactates in the crustal parenchyma, weak thickening of the crustal parenchyma, and the presence of a weakly </span><span style="font-family:Verdana;">sclerized</span> <span style="font-family:Verdana;">sclerenchymal</span><span style="font-family:Verdana;"> ring in the central color parenchyma: </span><span style="font-family:Verdana;">parenchymal-bundle</span><span style="font-family:Verdana;"> type of structure, weak thickening of the outer wall of the epidermis and slightly waviness of the cuticle surface, the presence of lactic acid in the crustal parenchyma. Weak submergence of stomata, large-cell crustal parenchyma, extensive, large-cell, thin-walled, poorly </span><span style="font-family:Verdana;">sclerified</span><span style="font-family:Verdana;"> central cylinder, also similarity to the structure of the stem with pedicel, but the presence of a cavity in the stem. The predominance of mesomorphic traits in this endemic species indicat</span></span><span style="font-family:Verdana;">ed</span><span style="font-family:Verdana;"> more favorable</span><span style="font-family:""> </span><span style="font-family:Verdana;">mountain humid growing conditions w</span><span style="font-family:Verdana;">ere</span><span style="font-family:Verdana;"> noted.
文摘In the present paper as estimation of an unknown probability density of the spline-estimation is constructed, necessity and sufficiency conditions of strong consistency of the spline-estimation are given.
文摘利用常规观测资料、区域自动站加密观测资料、NCEP/NCAR逐6 h 1°×1°的再分析资料和FY-2卫星逐时云顶亮温资料,分析2018年5月21日南疆西部极端大暴雨过程的成因。结果表明:100 hPa南亚高压双体型、500 hPa塔什干低涡与贝加尔湖附近低槽“东西夹攻”、低空偏东急流强,为此次大暴雨提供了有利的高低空天气系统配置。副热带西风急流与极锋急流形成的高空强辐散区,在大暴雨区上空与低空偏东风急流左前方强烈的气旋式辐合区叠加,有利于上升运动维持;大暴雨发生前4 h,2个垂直环流圈的上升气流在暴雨区中心上空汇合,使得上升运动进一步增强。极端大暴雨发生前南疆西部整层大气湿润,低层偏西气流与偏东急流在暴雨区中心附近形成强烈辐合,促进了南疆盆地水汽向暴雨区集中和汇聚,同时有利于地面中尺度系统的发展和加强。卫星云图上多个γ中尺度MCS的活动造成本次极端大暴雨,强降水发生在TBB梯度最大的区域,极端大暴雨开始前3 h TBB下降超过30℃,与我国中东部地区局地暴雨发生前TBB的变化特征相似。