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QTL analysis of early flowering of female flowers in zucchini(Cucurbita pepo L.)
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作者 QU Shu-ping YANG Dan +5 位作者 YU Hai-yang CHEN Fang-yuan WANG Ke-xin DING Wen-qi XU Wen-long WANG Yun-li 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第11期3321-3330,共10页
Early flowering promotes early maturity, production, and the capacity to counteract biotic and abiotic stresses, making it an important agronomic trait in zucchini. The present study demonstrated that the zucchini inb... Early flowering promotes early maturity, production, and the capacity to counteract biotic and abiotic stresses, making it an important agronomic trait in zucchini. The present study demonstrated that the zucchini inbred line ‘19’ consistently flowered early, taking significantly fewer days to bloom the first female flower(DFF) than the inbred line ‘113’. Genetic analysis revealed that DFF, an inheritable quantitative trait, is controlled by multiple genes. Based on the strategy of quantitative trait locus(QTL) sequencing(QTL-seq) combined with linkage analysis, three QTLs for DFF were identified on chromosomes 4, 11, and 20. This study used additional F2 populations grown under different environmental conditions for QTL mapping analysis of DFF with insertion/deletion(InDel) markers to validate these results. Using the composite interval mapping(CIM) method of R/qtl software, we only identified one major locus under all environmental conditions, located in a 117-kb candidate region on chromosome 20. Based on gene annotation, gene sequence alignment, and qRT-PCR analysis, we found that the Cp4.1LG20g08050 gene encoding a RING finger protein may be a candidate gene for the opposite regulation of early flowering in zucchini. In summary, these results lay a foundation for a better understanding of early flowering and improving early flowering-based breeding strategies in zucchini. 展开更多
关键词 cucurbita pepo L. early flowering days to bloom the first female flower QTL analysis
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美洲南瓜(Cucurbita pepo)种皮苯丙氨酸解氨酶基因克隆与表达分析 被引量:31
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作者 刘佳 徐秉良 +2 位作者 薛应钰 张树武 陈荣贤 《中国农业科学》 CAS CSCD 北大核心 2014年第6期1216-1226,共11页
【目的】克隆有壳美洲南瓜种皮PAL基因(CP-PAL),研究PAL基因在有壳和裸仁美洲南瓜种皮发育过程中的表达特性,为揭示美洲南瓜种皮发育机理及木质素积累在南瓜种皮发育中的作用等方面提供理论依据。【方法】利用RT-PCR,结合RACE技术克隆CP... 【目的】克隆有壳美洲南瓜种皮PAL基因(CP-PAL),研究PAL基因在有壳和裸仁美洲南瓜种皮发育过程中的表达特性,为揭示美洲南瓜种皮发育机理及木质素积累在南瓜种皮发育中的作用等方面提供理论依据。【方法】利用RT-PCR,结合RACE技术克隆CP-PAL的全长序列并进行生物信息学分析;利用实时荧光定量PCR技术,采用2-△△Ct方法对种皮发育过程中PAL基因的表达进行分析。【结果】CP-PAL序列全长为1 720 bp,含有一个1 359bp的ORF,114 bp 5′端非翻译区、236 bp 3′端非翻译区及11 bp polyA结构,可编码452个氨基酸,分子量为48.86 kD,等电点为6.55,原子总数为6 885个,分子式为C2158H3449N607O657S14。通过BLASTX比对表明CP-PAL核苷酸序列及其氨基酸序列与黄瓜PAL核苷酸及其氨基酸序列的相似性最高。CP-PAL包含PAL-HAL、PLN02457及phe_am_lyase 3个结构域及酶活性中心序列(GTITASGDLVPLSYIA),属于Lyase_I_Like超家族。CP-PAL不具有导肽及信号肽,为非跨膜蛋白,可能定位于细胞质及内质网上,属可溶性蛋白。CP-PAL蛋白含有4个酪蛋白激酶Ⅱ识别位点、6个蛋白激酶C识别位点、12个豆蔻酰化位点及2个糖基化位点。此外,分析可知CP-PAL有18个丝氨酸磷酸化位点、6个苏氨酸磷酸化位点及5个酪氨酸磷酸化位点。无规则卷曲是CP-PAL蛋白二级结构中最大量的结构元件,α-螺旋和延伸链分散于整个蛋白质中,且N-末端以无规则卷曲形式存在,C-末端以延伸链形式存在。CP-PAL氨基酸序列同挑选的其他14种植物的PAL氨基酸序列进行多重序列比较,发现功能区域的氨基酸序列较为保守,N-端的差异最大。系统进化树分析表明CP-PAL和黄瓜PAL蛋白的亲缘关系最近。CP-PAL蛋白三级结构以α-螺旋为主要结构元件,β-转角和无规则卷曲较少。实时荧光定量PCR分析表明PAL基因在有壳和裸仁美洲南瓜种皮发育中呈现反向对应的变化趋势:有壳美洲南瓜种皮PAL基因在自交授粉20 d后表达量增加,而裸仁美洲南瓜种皮PAL基因在20 d后表达量下降。整个种皮发育过程中,PAL基因在裸仁美洲南瓜中的表达量低于其在有壳美洲南瓜中的表达量。【结论】从有壳美洲南瓜种皮中克隆得到与木质素合成相关的PAL基因,该基因可能通过参与调控种皮木质素的合成从而影响美洲南瓜裸粒品种的种皮发育。 展开更多
关键词 美洲南瓜 种皮 苯丙氨酸解氨酶 基因克隆 表达分析
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美洲南瓜(Cucurbita pepo)种皮发育形态观察及其相关酶活性测定 被引量:14
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作者 薛应钰 师桂英 +1 位作者 徐秉良 陈荣贤 《草业学报》 CSCD 北大核心 2011年第2期23-30,共8页
采用组织整体染色和石蜡切片相结合的方法对美洲南瓜有壳品种04LAg-26-2和无壳品种04LAg-26-28种皮发育形态结构比较观察。结果表明,有壳美洲南瓜种皮是由表皮层、下皮层、厚壁组织层、软组织层和绿色组织层构成,无壳裸仁南瓜的形成主... 采用组织整体染色和石蜡切片相结合的方法对美洲南瓜有壳品种04LAg-26-2和无壳品种04LAg-26-28种皮发育形态结构比较观察。结果表明,有壳美洲南瓜种皮是由表皮层、下皮层、厚壁组织层、软组织层和绿色组织层构成,无壳裸仁南瓜的形成主要是授粉后18 d种皮发育过程中厚壁组织中的细胞变形、瓦解,缺少木质素的积累而导致了下皮层、厚壁组织层的缺失;对2个品种的种皮、叶片、叶柄和瓜囊不同组织中木质素合成相关酶活性测定结果表明,无壳品种04LAg-26-28在授粉18 d后,种皮中苯丙氨酸解氨酶(PAL)、肉桂酸-4-羟基化酶(C4H)、4-香豆酸-辅酶A连接酶(4CL)、肉桂醇脱氢酶(CAD)和过氧化物酶(POD)活性明显降低,而叶片、叶柄和瓜囊中这几种酶活性在授粉18 d后,呈逐渐增加的趋势。 展开更多
关键词 美洲南瓜 种皮形态 酶活性
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In vitro Regeneration of First-generation Inbred Progenies of Cucurbita pepo L. Double Haploids 被引量:1
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作者 Yongan CHENG Enhui ZHANG +2 位作者 Xiaofei ZHAO Taoxia TANG Zhongmin XU 《Agricultural Biotechnology》 CAS 2015年第4期10-15,共6页
Using seeds of inbred progenies of Cucurbita pepo L. DH12-11409 double haplolds as experimental materials, the effects of different hormone combinations, explant types and seedling ages on adventitious bud regeneratio... Using seeds of inbred progenies of Cucurbita pepo L. DH12-11409 double haplolds as experimental materials, the effects of different hormone combinations, explant types and seedling ages on adventitious bud regeneration and rooting of C. pepo L. were investigated. According to the results, inoculating cotyledonary nodes of yellow-green cotyledons from 5-d-old C. pepo L. double haploids to MS + 30 g/L Suc + 8 g/L Agar + 2.0 mg/L 6-BA + 0.1 mg/L NAA led to the best results with the induction frequency of 90.0% and differentiation coefficient of 8.5. MS medium with addition of 0.05 or 0.1 mg/L NAA led to the highest rooting rate. Regenerated seedlings with 5 - 6 true leaves exhibited the highest survival rate of 90.0%, which was the optimal period for domestication and transplanting of regenerated seedlings. This study laid a solid foundation for high-efficiency utilization of heterosis of C. pepo L. 展开更多
关键词 cucurbita pepo L. Double haploid Adventitious buds Plant regeneration
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Use of Cucurbita pepo Oil to Fight against the UV Action on the Skin 被引量:1
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作者 Aristide H. W. Nakavoua Guy Crépin Enoua +2 位作者 Stéphanie Manhan-Iniangas Pierre Chalard Gilles Figuérédo 《Green and Sustainable Chemistry》 2021年第2期49-58,共10页
Skin aging is a process most often attributed to UV<span><span><span style="font-family:" minion="" pro="" capt","serif";"=""><span styl... Skin aging is a process most often attributed to UV<span><span><span style="font-family:" minion="" pro="" capt","serif";"=""><span style="font-family:Verdana;"> </span></span></span></span><span><span><span style="font-family:" minion="" pro="" capt","serif";"=""><span></span></span></span></span><span><span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">[1]</span></span></span><span><span><span style="font-family:" color:#943634;"=""></span></span></span><span><span></span></span><span></span><span><span><span></span></span></span><span><span></span></span><span></span><span><span></span></span><span><span><span style="font-family:" color:red;"=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">and</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> also to the use of creams and other cosmetic products low in antioxidant compounds </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">[2]</span></span></span><span><span><span style="font-family:;" "=""></span></span></span><span><span></span></span><span></span><span><span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">. Photochemically stable pepo Cucurbita oil can be used as an exogenous cosmetic supplement due to its high antioxidant content. Incorporated in an agar, media containing a synthetic melanin solution with added pumpkin oil are subjected to UV light, the aging thus modeled is followed by the measurement of photoresistance values correlated with chemical and spectrophotometric analyses. This study confirms that pumpkin oil is highly effective in protecting the skin, especially the most sensitive skins such as babies’ skin </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">[3]</span></span></span><span><span><span style="font-family:;" "=""></span></span></span><span><span></span></span><span></span><span><span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> by reinforcing the action of melanin </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">and</span></span></span><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> also that of albinos without melanin. Indeed its SPF (<b>Significant Sun Protection Factor</b>) index estimated during this work is very consistent,</span><i><span style="font-family:Verdana;"> i.e.</span></i><span style="font-family:Verdana;"> more than 22% of UVB (<b>280</span></span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span><span><span style="font-family:Verdana;">315 nm</b>) radiations are suppressed. 展开更多
关键词 AGING Vegetable Oil cucurbita pepo Photoresistance MELANIN UV
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Direct Organogenesis from Cotyledonary Node Explants of Cucurbita pepo (L.)—An Important Zucchini Type Vegetable Crop
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作者 Muruganantham Mookkan 《American Journal of Plant Sciences》 2015年第1期157-162,共6页
Cotyledonary node explants from 3 - 5-d-old seedling derived explants of Cucurbita pepo (L.) produced multiple shoots in Murashige and Skoog (MS) salts B5 vitamins containing medium in the presence of N6-benzylamino-p... Cotyledonary node explants from 3 - 5-d-old seedling derived explants of Cucurbita pepo (L.) produced multiple shoots in Murashige and Skoog (MS) salts B5 vitamins containing medium in the presence of N6-benzylamino-purine BAP 1 mg/L + Thidiazuron TDZ 0.05 mg/L. After 4 weeks explants were subcultured to medium containing MS salts B5 Vitamins BAP 0.5 mg/L, Gibberellic acid GA3 1 mg/L and L-Glutamine 15 mg/L. Periodic excision of regenerated shoots from the explants increased shoot efficiency during subculture. The combination of L-Glutamine with BA and GA3 significantly increased the shoot proliferation. Elongated shoots were excised from shoot clumps and transferred to rooting medium containing indole-3-butyric acid (IBA, 1.0 mg/L). The rooted plants were hardened in small pot containing standardized garden soil, well developed plant transferred to greenhouse and survival rate was 85%. 展开更多
关键词 cucurbita pepo ZUCCHINI Cotyledonary Node SUBCULTURE
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Study the Effect of Different Levels of Zucchini (<i>Cucurbita pepo</i>L.) on the Biological Indicators for the Prevention of Cardiovascular Disease in Rats Fed High-Fat Diets
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作者 El-Sayeda G. E. El-Sahar Hala R. A. Sopeah Mona S. Almujaydil 《Food and Nutrition Sciences》 2020年第2期63-81,共19页
The effects of fresh zucchini on nutritional status, and biological indicators for the prevention of cardiovascular disease in rats fed high-fat diets investigated in this study. Thirty Sprague Dawley rats were random... The effects of fresh zucchini on nutritional status, and biological indicators for the prevention of cardiovascular disease in rats fed high-fat diets investigated in this study. Thirty Sprague Dawley rats were randomly divided into two main groups the first, negative control group Co (-) (n = 6), fed basal diet, The second group (n = 24) fed high-fat diet (containing basal diet + 5% tallow + 1% cholesterol + 0.02% bile salt). This group was divided into four subgroups each group 6 rats: group positive control co (+) fed high-fat diet only, group 1 (G (1)) fed high-fat diet plus 10% zucchini, group 2 (G (2) fed high-fat diet plus 15% zucchini and group 3 (G (3)) fed high-fat diet plus 20% zucchini. The levels of serum total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were measured after eight wk. of experimental treatment. The pathologic changes of the heart, spleen and kidney were evaluated. SPSS, one way ANOVA was used to analyze the results. The results indicated that the mean values of body weight gain (BWG) and feed efficiency ratio (FIR) in G (2) and G (3) showed significant decrease compared to co (-), co (+) and G 1. The results showed that in groups (G1, G2 and G3) the relative weight of heart had significant increase when compared with control negative group. But liver and spleen weight had no significant difference when compared with control negative and positive group, the levels of TC, TG and LDL-C were significantly increased in co (+) (P < 0.05) Compared to co (-), all groups fed on high fat diet containing different levels of zucchini (10%, 15% and 20%) had significant decrease in TC and LDL-C compared with co (+), also G2 and G3 had improve significant in HDL-C when compared with co. (+). The groups fed on zucchini give results similar to group co. (-). The best treatment was zucchini (15% and 20%) which had lowest values of total lipid cholesterol and LDL-C, and the best values of HDL-C, HDL-C/TC % for all groups fed on high fat diet and zucchini increased non significantly (p ≤ 0.05) the HDL-C/TC % index compared to group co. (+). while, G2 and G3 gave significant decrease in LDL-C/HDL-C ratio compared to group co. (+). Morphologic changes of heart, spleen and kidney revealed that groups G2 and G3 had a similar preventive effect against CHD in this experimental model. In conclusion, results showed that zucchini had similar potential to attenuate CHD-related parameters in a mild oxidative stress induced by high-fat diet in rats. 展开更多
关键词 Atherogenic Index Cardio Protective cucurbita pepo L. HIGH-FAT Diet HDL-C LDL-C Lipid Profile ZUCCHINI
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Valorization of Cucurbita pepo Seed Oil in Soap Production
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作者 Guy Crépin Enoua Aristide H. W. Nakavoua +6 位作者 Victor N’goka Tony Wheellyam Pouambeka Prince Maho Diafouana Mahoungou Narcisse Nicaise Obaya Alain Brice Mbozo Vouidibio Hubert Makomo Robin Pascal Ongoka 《Green and Sustainable Chemistry》 CAS 2022年第4期104-117,共14页
The present study was conducted with the aim of extracting and characterising Cucurbita pepo seed oil and then producing soap with important dermatological properties. The physico-chemical results of the Cucurbita pep... The present study was conducted with the aim of extracting and characterising Cucurbita pepo seed oil and then producing soap with important dermatological properties. The physico-chemical results of the Cucurbita pepo seed oil after extraction were satisfactory and indicate that the oil obtained contains long-carbonaceous fatty acids. The production of the soap was based on the realisation of a saponification reaction by reflux heating between the extracted oil and a solution of soduim hydroxyde 7M for one hour. The soap obtained is characterised by the following physico-chemical parameters: salt content, alkali content, pH, and humidity;which meet ISO 684-1974 standards. The antibacterial parameters of the soaps S1, S2, S3, S4, S5 and S6 were determined by the Agar Diffusion test using the well method and these soaps showed an interesting antibacterial activity against the germs pseudomonas aeruginosa and staphylococcus aureus. Soaps based on Raffia sese oil (kolo oil) and Elaesis guineensis oil (palm oil) have also been synthesized for comparison with soap obtained from Cucurbita pepo seed oil. 展开更多
关键词 VALORIZATION cucurbita pepo Seeds cucurbita pepo Oil SOAP Antibacterial Activity
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The Effects of Simultaneous Application of Different Organic and Biological Fertilizers on Quantitative and Qualitative Characteristics of Cucurbita pepo L,
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作者 Mohsen Jahan Alireza Koocheki Mohammad-Kazem Tahami Mohammad-Behzad Amiri Mahdi Nassiri-Mahallati 《Journal of Life Sciences》 2012年第10期1145-1149,共5页
Understanding the relations and interactions between ecosystem components and plants is crucial for sustainable production of medicinal plants. To study the effect of simultaneous application of organic and biological... Understanding the relations and interactions between ecosystem components and plants is crucial for sustainable production of medicinal plants. To study the effect of simultaneous application of organic and biological fertilizers on yield and yield components of zucchini squash, split plot arrangement of factors based on randomized complete block design with three replications were used during 2009-2010 growing season. The mainplot factors were the type of organic fertilizers, including: (1) cow manure; (2) sheep manure; (3) chicken manure; (4) vermicompost; and (5) control. The subplot factors were the biofertilizes (Nitragin, containing Azotobacter sp., Azospirillum sp. and Pseudomonas sp.) utilization. The results showed the positive but non-significant effect of organic and biological fertilizers on yield and yield components of zucchini squash. Amongst the organic fertilizers, cow and chicken manure, have superiority compared to others. The highest seed oil and protein percent was obtained with application of chicken manure, however there was no significant difference between treatments in seed oil percent. The positive effect of organic and biological fertilizers on seed yield was higher than fruit yield. At a glance, application of cow manure solely was better than its application with nitragin. Nitragin application has no significant effect on some traits when utilized with sheep manure and vermicompost. 展开更多
关键词 cucurbita pepo L. organic fertilizers nitragin growth characteristics.
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北方早春棚室西葫芦嫁接育苗栽培技术
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作者 董振华 《农业技术与装备》 2024年第5期128-130,共3页
为了提高西葫芦的产量和品质,满足市场需求,根据多年的从事棚室栽培技术经验,总结了北方棚室西葫芦嫁接育苗栽培技术,以供广大种植户参考。
关键词 北方 棚室 西葫芦 嫁接育苗 栽培技术
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美洲南瓜(Cucurbit pepo)WMV-2抗性遗传及分子标记研究 被引量:3
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作者 王冬杰 葛宇 +4 位作者 刘超 李雪 徐文龙 崔崇士 屈淑平 《河南农业科学》 CSCD 北大核心 2014年第1期79-83,共5页
以美洲南瓜(Cucurbita pepo)抗病自交系‘0504’和感病自交系‘0223’为亲本杂交获得的157个F2单株为材料,研究南瓜对西瓜花叶病毒2号(WMV-2)抗性的遗传规律和分子标记。对亲本、F1及F2苗期接种WMV-2进行抗病性鉴定,结果表明,美洲南瓜对... 以美洲南瓜(Cucurbita pepo)抗病自交系‘0504’和感病自交系‘0223’为亲本杂交获得的157个F2单株为材料,研究南瓜对西瓜花叶病毒2号(WMV-2)抗性的遗传规律和分子标记。对亲本、F1及F2苗期接种WMV-2进行抗病性鉴定,结果表明,美洲南瓜对WMV-2的抗性由单隐性基因控制。采用集团分离分析法(BSA)和SSR技术,筛选出与WMV-2抗性基因连锁的标记CMTm157和CMTm158,遗传距离分别为10.9cM和6.2cM,其可以作为南瓜抗WMV-2育种的辅助选择分子标记。 展开更多
关键词 美洲南瓜 西瓜花叶病毒 抗性遗传规律 SSR标记
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硅对盐胁迫下西葫芦幼苗水分代谢及光合特性的影响
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作者 王国帅 赵嘉诺 +3 位作者 魏昊泰 王鹏 罗石磊 张国斌 《西北植物学报》 CAS CSCD 北大核心 2024年第5期681-690,共10页
【目的】探究外源硅对盐胁迫下西葫芦幼苗水分代谢及光合作用的保护机制,可为西葫芦抗盐栽培提供理论参考。【方法】以西葫芦品种‘寒绿7042’为试材,通过水培试验,共设置对照、硅处理(0.3 mmol/L Na_(2)SiO_(3)·9H_(2)O)、盐胁迫(... 【目的】探究外源硅对盐胁迫下西葫芦幼苗水分代谢及光合作用的保护机制,可为西葫芦抗盐栽培提供理论参考。【方法】以西葫芦品种‘寒绿7042’为试材,通过水培试验,共设置对照、硅处理(0.3 mmol/L Na_(2)SiO_(3)·9H_(2)O)、盐胁迫(150 mmol/L NaCl)、盐胁迫+硅等4个处理,处理10 d后测定幼苗的根系形态和活力,叶片含水量、水势、光合气体交换参数、叶绿素含量、叶绿素荧光参数及根系质膜水通道蛋白基因的表达等指标。【结果】盐胁迫显著抑制了西葫芦幼苗根系的生长,降低了根系活力、叶片含水量、叶片水势和蒸腾作用,还破坏了植株的光合系统,导致净光合速率、气孔导度、叶绿素含量和PSⅡ光化学效率显著降低。外源硅显著改善了盐胁迫下西葫芦幼苗的根系形态,提高了根系活力,并通过促进根系质膜水通道蛋白基因PIP1;2、PIP1;3、PIP1;5、PIP1;7、PIP2;1、PIP2;4、PIP2;6、PIP2;8、PIP2;9和PIP2;12的表达改善植株体内的水分状况,提高叶片含水量和水势,增强蒸腾作用;外源硅还通过提高叶片气孔导度、叶绿素含量、净光合速率、PSⅡ最大光化学效率、PSⅡ实际光化学效率、光化学淬灭系数,降低胞间CO_(2)浓度和非光化学淬灭系数来增强盐胁迫下幼苗的光合作用。【结论】盐胁迫下添加0.3 mmol/L的硅可以有效改善西葫芦幼苗的水分代谢和光合作用状况,从而提高西葫芦幼苗抗盐胁迫能力。 展开更多
关键词 西葫芦 盐胁迫 水分代谢 光合特性
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美洲南瓜种质资源初步评价及白粉病抗性鉴定
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作者 温瑞琦 王香 +3 位作者 付宇航 杨甜 程永安 马建祥 《北方园艺》 CAS 北大核心 2024年第13期17-25,共9页
以47份美洲南瓜种质为试材,采用形态学调查和苗期鉴定的方法,研究了白粉病对美洲南瓜种质的影响,并初步评价种质的遗传多样性,以期为美洲南瓜抗病新品种选育提供参考依据。结果表明:27个质量的多样性指数变幅为0.18~1.82,平均值为0.80,... 以47份美洲南瓜种质为试材,采用形态学调查和苗期鉴定的方法,研究了白粉病对美洲南瓜种质的影响,并初步评价种质的遗传多样性,以期为美洲南瓜抗病新品种选育提供参考依据。结果表明:27个质量的多样性指数变幅为0.18~1.82,平均值为0.80,具有丰富的遗传多样性;15个数量性状的多样性指数变幅为1.04~1.32,平均值为1.20,数量性状的多样性指数高于质量性状的多样性指数;基于病害指数和隶属函数值进行评价,筛选出高抗种质34份,中抗种质12份,感病种质1份。 展开更多
关键词 美洲南瓜 农艺性状 白粉病 病害指数 遗传多样性
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西葫芦嫩瓜皮叶绿素合成代谢与其皮色形成的关联性研究
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作者 李可悦 王丹丹 +3 位作者 刘江涛 申琼 盖少杰 武峻新 《植物遗传资源学报》 CAS CSCD 北大核心 2024年第8期1336-1346,共11页
为了挖掘优异西葫芦(Cucurbita pepo L.)种质资源,提高外观品质优的嫩瓜选择效率,本研究利用色差仪对本单位创制的54份西葫芦自交系进行不同嫩瓜皮色分类,并以其中7份(重点4份)代表性材料为研究对象,对西葫芦嫩瓜皮叶绿素合成代谢与其... 为了挖掘优异西葫芦(Cucurbita pepo L.)种质资源,提高外观品质优的嫩瓜选择效率,本研究利用色差仪对本单位创制的54份西葫芦自交系进行不同嫩瓜皮色分类,并以其中7份(重点4份)代表性材料为研究对象,对西葫芦嫩瓜皮叶绿素合成代谢与其皮色形成的关联性进行分析。结果表明,叶绿素是决定偏白色、浅绿色、翠(青)绿色、绿色和深绿色西葫芦嫩瓜皮色的主要色素。其中,叶绿素a含量占总含量的49.20%~60.58%,是决定嫩瓜皮色深浅的主要因素。颜色最鲜艳且更加偏绿色的翠(青)绿色嫩瓜皮材料,其色度值(C)显著大于其他皮色,而叶绿素a/叶绿素b和红绿值(a*)分别显著大于和小于偏白色、浅绿色和深绿色皮色。深绿色、翠(青)绿色和偏白色嫩瓜皮叶绿素合成存在胆色素原转化为尿卟啉原Ⅲ和粪卟啉原Ⅲ转化为原卟啉IX两个受阻点,且后一转换阶段是导致偏白色和翠(青)绿色嫩瓜皮叶绿素合成受阻、叶绿素含量骤降的主要原因。叶绿素合成减弱与叶绿素代谢中的叶绿素酶降解活性增强以及抗氧化酶中的超氧化物歧化酶和过氧化氢酶活性减弱之间呈显著相关,这也证明了嫩瓜皮偏白色的成因。超氧化物歧化酶和过氧化氢酶活性与嫩瓜皮叶绿素含量呈显著相关,这两种酶延缓了翠(青)绿色和深绿色嫩瓜皮叶绿素含量降低速率。本研究结果为深入解析不同嫩瓜皮色,特别是翠(青)绿色嫩瓜皮呈色机理以及挖掘、利用相关优异特异资源提供了理论依据和技术支撑。 展开更多
关键词 西葫芦 嫩瓜皮色 翠(青)绿色 叶绿素 合成代谢
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含聚天冬氨酸微生物肥料中养分比例对西葫芦生长的作用初探
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作者 刘金魁 赵美英 +4 位作者 赵明江 韩如梅 王春风 范占权 焦永康 《浙江农业科学》 2024年第6期1404-1409,共6页
针对国内温室西葫芦生产过程中存在的盲目施用肥料而造成的瓜菜产量和品质的降低问题进行了研究。以河北培根生物科技有限公司生产的微生物肥料(添加聚天冬氨酸)为供试肥料,以N、P_(2)O_(5)、K_(2)O不同养分比例设置试验处理(T1、T2、T3... 针对国内温室西葫芦生产过程中存在的盲目施用肥料而造成的瓜菜产量和品质的降低问题进行了研究。以河北培根生物科技有限公司生产的微生物肥料(添加聚天冬氨酸)为供试肥料,以N、P_(2)O_(5)、K_(2)O不同养分比例设置试验处理(T1、T2、T3)、普通复合肥料(N 15%、P_(2)O_(5) 15%、K_(2)O 15%)作为CK处理进行了相关试验,通过对西葫芦不同生物阶段的多个指标进行综合分析,结果发现,在试验范围内T1(N 16%、P_(2)O_(5) 9%、K_(2)O 20%)处理效果最佳;所试验的肥料促进西葫芦的营养生长、促进开花坐果、加快果实发育速度,还能提高瓜菜外观品质、可溶性糖含量和V_C含量,显著提高了产量和经济效益。 展开更多
关键词 复合微生物肥料 聚天冬氨酸 养分比例 西葫芦 生长作用
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Dependence of Pumpkin Yield on Plant Density and Variety 被引量:1
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作者 Khalid El-Sayed Abd El-Hamed Mohammed Wasfy Mohammed Elwan 《American Journal of Plant Sciences》 2011年第5期636-643,共8页
Pumpkins (Cucurbita spp.) are an important specialty vegetable. Field studies were conducted on three pumpkin cultivars characterized with different growth habits to determine the effects of plant population and genot... Pumpkins (Cucurbita spp.) are an important specialty vegetable. Field studies were conducted on three pumpkin cultivars characterized with different growth habits to determine the effects of plant population and genotypes on marketable yield. Increasing plant populations from 4780 to 9560 plant per hectare resulted in significantly greater fruit number and yield in both growing seasons and for all tested genotypes. Average fruit weight declined at the higher populations. The response of pumpkin genotypes to different planting densities was genotype (growth habit) dependent since the response was pronounced in large vine types compared to bush type. The phenotypic variation existed among pumpkin genotypes for yield seems to be under genetic control. Foliar application of potassium improved growth and yield of pumpkin plants although the non-significant effect. These results demonstrate that growers may increase pumpkin yield by increasing plant populations. 展开更多
关键词 cucurbita pepo cucurbita Moschata pumpkin PLANTING Density Plant Population Competition POTASSIUM CULTIVAR by Environment Interaction
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Fatty Acid Accumulation in Seeds of Three Seed Pumpkin Cultivars
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作者 Ge Yu Wang Yun-li +2 位作者 Xu Wen-long Cui Chong-shi Qu Shu-ping 《Journal of Northeast Agricultural University(English Edition)》 CAS 2017年第4期19-24,共6页
In the literature there are many reports on the composition and properties of pumpkin seed oil; however, few is known about the effect of different stages of seed development on various fatty acid profiles in developi... In the literature there are many reports on the composition and properties of pumpkin seed oil; however, few is known about the effect of different stages of seed development on various fatty acid profiles in developing seeds. The objective of this study was to provide the changes of various fatty acid accumulations in seed oil obtained from the seeds of three pumpkin varieties belonging to the species Cucurbita maxima and Cucurbita pepo. Unsaturated acids(oleic and linoleic) were dominant in various fatty acids, which constituted 38.9%-49.1% and 29.4%-42.7% of the total fatty acids at seed maturity for three pumpkin varieties, respectively, while other fatty acid concentrations except for palmitic acid all did not reach 10%. Different varieties exhibited greater effect on various fatty acid contents and the total fatty acid contents in the seeds of pumpkin rather than the species. On the whole, palmitic acid profiles of the seed oil in three varieties all followed the fluctuant decrease during all the stages of seed development, but palmitoleic acid and the total fatty acid profiles of the seed oil in three varieties were just the opposite. Stearic, oleic and linoleic acid profiles of the seed oil in three varieties all experienced the third pattern that fluctuated during all the stages of seed development, but no significant differences in these three fatty acid concentrations were found from the beginning to the end. Linolenic acid concentrations of three varieties were on the decline and ultimately close to zero. Myristic and arachidic acid profiles of the seed oil followed different trends in three varieties. Among them, myristic and arachidic acid profiles of the seed oil of Yinhui-1 fluctuated downward all the time until seed maturity, but those of 0238-1 and Jinhui-2 completely changed oppositely. 展开更多
关键词 seed pumpkin cucurbita maxima cucurbita pepo seed oil fatty acid accumulation
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Silicon Deposition in Leaf Trichomes of Cucurbitaceae Horticultural Plants: A Short Report
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作者 Jun Abe 《American Journal of Plant Sciences》 2019年第3期486-490,共5页
Silicon deposition in leaf trichome of six horticultural Cucurbitaceae species, cucumber (Cucumis sativus), pumpkin (Cucurbita maxima), melon (Cucumis melo), watermelon (Citrullus lanatus), sponge gourd (Luffa cylindr... Silicon deposition in leaf trichome of six horticultural Cucurbitaceae species, cucumber (Cucumis sativus), pumpkin (Cucurbita maxima), melon (Cucumis melo), watermelon (Citrullus lanatus), sponge gourd (Luffa cylindrica) and bottle gourd (Lagenaria siceraria var. hispida) was observed by an X-ray microanalyzer coupled with an environmental scanning electron microscope. The elements that presented in the surface of three or four leaves of the individual species were detected and mapped by the X-ray microanalyzer. In leaves of cucumber, pumpkin, and melon, high accumulation of silicon was detected in cells surrounding the bases of the trichome hair and the hair itself deposited calcium. On the other hand, in sponge gourd and bottle gourd, high accumulation of silicon was detected only in the hair. In watermelon leaves, silicon deposited both in the hair and in cells surrounding the bases of the hair. Thus, horticultural Cucurbitaceae plants have interspecific variation in the pattern of silicon deposition in leaf trichomes. 展开更多
关键词 Bottle Gourd (Lagenaria siceraria var. hispida) Leaf TRICHOME Melon (Cucumis melo) pumpkin (cucurbita maxima) Silicon Accumulation Sponge Gourd (Luffa cylindrica) Watermelon (Citrullus lanatus)
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西葫芦NCED基因家族鉴定及其响应干旱胁迫分析 被引量:7
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作者 刘建汀 叶新如 +3 位作者 张前荣 李永平 温庆放 朱海生 《西北植物学报》 CAS CSCD 北大核心 2023年第4期569-581,共13页
NCED基因家族成员在调节植物响应干旱胁迫中发挥着关键作用,该研究通过生物信息学技术分析NCED在西葫芦基因组中的分布、结构及进化,研究家族成员在不同组织中的表达特异性及其对10%PEG 6000模拟干旱、0.1 mmol·L-1ABA激素和自然... NCED基因家族成员在调节植物响应干旱胁迫中发挥着关键作用,该研究通过生物信息学技术分析NCED在西葫芦基因组中的分布、结构及进化,研究家族成员在不同组织中的表达特异性及其对10%PEG 6000模拟干旱、0.1 mmol·L-1ABA激素和自然干旱胁迫的响应,以解析NCED基因家族的生物学功能。结果表明:(1)从西葫芦全基因组中鉴定出6个NCED家族基因(CpNCED1~6),且6个基因均不含内含子、分别分布于西葫芦的1、10、12、14、19和20号共6条染色体上。(2)理化性质分析发现,CpNCED1~6蛋白长度为569~590 aa,理论分子量在62.64~65.54 kD之间。(3)蛋白保守元件分析显示,除CpNCED3蛋白在遗传进化过程中出现3个基序(motif 12、motif 13和motif 15)的缺失外,其余5个蛋白都有完整的16个motif保守基序,且分布在600个氨基酸以内,同时大部分NCED蛋白序列保守性较高。(4)顺式作用元件分析显示,西葫芦CpNCED1~6基因均含ABRE、W box、MBS、P-box、TCA-element、CGTCA-motif、TGA-element和TGA-box等潜在的干旱胁迫响应元件。(5)qRT-PCR分析表明,CpNCED1~6基因在西葫芦不同组织中的表达具有组织特异性,其中,CpNCED4和CpNCED1在茎中的表达量显著高于其他4个基因,CpNCED2、CpNCED4、CpNCED6在花中的表达显著高于其余3个基因且CpNCED2表达量最高,CpNCED1~6在果实和叶中的表达量均相对较低;与对照组相比,CpNCED1~6受模拟干旱、ABA激素和自然干旱胁迫均上调表达;伴随干旱胁迫的产生,叶片中脱落酸(ABA)含量逐渐升高,暗示CpNCEDs在西葫芦干旱胁迫响应与ABA的生物合成过程中发挥着正向调控作用。研究发现,6个CpNCED1~6基因与西葫芦干旱胁迫响应密切相关,且对西葫芦干旱胁迫的响应以及ABA生物合成具有重要作用,尤其以CpNCED2和CpNCED4基因的作用更为明显。 展开更多
关键词 西葫芦 NCED基因家族 生物信息学分析 干旱胁迫 表达分析
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内蒙古籽用西葫芦种子病毒鉴定及消毒效果评价 被引量:1
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作者 尚鹏 王萍 +1 位作者 许珂 武兆昕 《西北农林科技大学学报(自然科学版)》 CSCD 北大核心 2023年第4期36-44,共9页
【目的】对内蒙古籽用西葫芦种子病毒进行鉴定,明确其种子携带病毒的情况;对带毒种子进行不同消毒处理,筛选出有效的消毒方法,为内蒙古地区籽用西葫芦病毒病的防治提供依据。【方法】采集具有典型病毒病症状的金粒1号、金丰娇子、瑞丰9... 【目的】对内蒙古籽用西葫芦种子病毒进行鉴定,明确其种子携带病毒的情况;对带毒种子进行不同消毒处理,筛选出有效的消毒方法,为内蒙古地区籽用西葫芦病毒病的防治提供依据。【方法】采集具有典型病毒病症状的金粒1号、金丰娇子、瑞丰9号、金丰光板、希望9号、晶莹118籽用西葫芦种子,对其进行反转录PCR检测及病毒序列分析对比,采用温汤、干热、磷酸三钠、盐酸、药剂等对带毒种子进行消毒处理,并采用实时荧光定量PCR技术检测带毒量,测定消毒种子的发芽率和发芽势。【结果】采用反转录PCR扩增,在6个品种籽用西葫芦种子中检测到黄瓜花叶病毒(cucumber mosaic virus,CMV)、小西葫芦黄化花叶病毒(zucchini yellow mosaic virus,ZYMV)、西瓜花叶病毒(watermelon mosaic virus,WMV)。通过5种处理方法对籽用西葫芦种子进行消毒,结果表明,温汤、干热、磷酸三钠、盐酸和药剂处理均能不同程度地降低籽用西葫芦种子带毒量,其中磷酸三钠处理对CMV的消毒率为99.68%,药剂处理对ZYMV的消毒率为99.74%,温汤处理对WMV的消毒率为99.89%,且不影响种子的发芽率和发芽势。【结论】内蒙古籽用西葫芦种子病毒病病原为CMV、ZYMV、WMV,且存在复合侵染。磷酸三钠处理对籽用西葫芦种子病毒病消除效果最佳。 展开更多
关键词 籽用西葫芦 病毒病 病原鉴定 种子消毒
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