青贮玉米是优质饲料作物,对畜牧业的大力发展具有重要意义。为了探究青贮玉米品种的遗传多样性现状,以141个通过国家及各省区(市)审定的青贮玉米品种为材料,基于农艺及品质性状与SSR标记从生态区角度对供试品种进行遗传多样性分析。结...青贮玉米是优质饲料作物,对畜牧业的大力发展具有重要意义。为了探究青贮玉米品种的遗传多样性现状,以141个通过国家及各省区(市)审定的青贮玉米品种为材料,基于农艺及品质性状与SSR标记从生态区角度对供试品种进行遗传多样性分析。结果表明,13个农艺及品质性状的变异系数区间为10.30%~30.31%,平均为16.01%;多样性指数区间为0.50~0.71,平均为0.60。农艺及品质性状聚类将供试品种划分为5个组,同一生态区来源的品种多归为同一组。40个SSR标记共检测到482个等位变异,平均每个位点12.05个,多态性信息含量(polymorphism information content,PIC)变幅为0.27~0.89,平均为0.68。南方品种大部分聚集在同一组,与东华北、黄淮海和西北品种间的遗传距离均较远,分别为0.054、0.047和0.046。两种方法分析结果具有共性,但也存在一定的差异,南方品种在农艺及品质性状和SSR标记上均具有特异性,西北和黄淮海品种仅在农艺及品质性状具有特异性。将两种方法相结合,能更全面、准确的了解青贮玉米品种的遗传背景,为不同生态区新品种选育及推广种植提供依据和参考。展开更多
[ Objective] The purpose was to study the correlation between main agronomic traits and single plant lint yield in upland cotton with high quality. [ Method] Twenty-four upland cotton lines with high quality were anal...[ Objective] The purpose was to study the correlation between main agronomic traits and single plant lint yield in upland cotton with high quality. [ Method] Twenty-four upland cotton lines with high quality were analyzed for single plant lint yield and 10 agronomic traits in a randomized, complete block at the agriculture experimental station of JXAU, Nanchang, China in 2007. They were divided into three types （ high, medium, low yield） based on single plant lint yield by Ward＇s method. A total of 11 traits of three types were compared. Correlation a- nalysis and stepwise regression analysis of 10 agronomic traits to single plant lint yield were carried out. [ Result] There existed statistically sig- nificant difference in bolls per plant, ~int percentage, lint index, fruit node numbers, growth period for three yield types. The high yield type ex- hibited the highest bolls per plant, lint percentage and lint index, the lowest fruit node numbers and the shortest growth period. Bolls per plant, boll weight and single plant lint yield were significantly and positively correlated. Fruit node numbers and single plant lint yield were significantly and negatively correlated. Bolls per plant, boll weight, and fruiting position number were the most important factors influencing single plant lint yield of upland cotton lines with high quality. [ Conclusion ] The results will have certain significance for the development of upland cotton variety with high quality.展开更多
[Objective] The aim of this study was to observe the agronomic,yield and quality traits of Ningchun 4 and its parents under the same environmental conditions,as well as to carry out molecular detection on the backgrou...[Objective] The aim of this study was to observe the agronomic,yield and quality traits of Ningchun 4 and its parents under the same environmental conditions,as well as to carry out molecular detection on the background genes distribution of the corresponding traits.[Method]Ningchun 4 and its parents Sonora 64,Hongtu,Abbondanza,Quality were used as materials to detect the agronomic and quality traits,as well as to analyze the genetic variation laws by molecular determination method.[Result]Ningchun 4 had inherited the advantages of bigger spike,red and hard grain from Sonora 64 and higher 1 000-grain weight from Hongtu.However,it had also inherited the disadvantages of late-maturing from Sonora 64 and lower tillering ability from Hongtu;the grain quality of Ningchun 4 was slightly lower than the Sonora 64;Ningchun 4 had high quality subunit of 5＋10,which had good dough rheological properties.[Conclusion]Ningchun 4 had inherited the long photoperiod characteristics and no-resistant to slow-leaf rusting and stripe rust characteristics from Hongtu and low PPO activity,high yellow pigments content from parents.展开更多
[Objective] This study aimed to investigate the effects of the combined use of cake organic fertilizer and tobacco special fertilizer on the growth and development as well as the quality of tobacco leaves.[Method] Dif...[Objective] This study aimed to investigate the effects of the combined use of cake organic fertilizer and tobacco special fertilizer on the growth and development as well as the quality of tobacco leaves.[Method] Different ratios of cake organic fertilizer and tobacco special fertilizer were applied.Then,the agronomic traits and leaf quality determining factors were measured and analyzed at different growing stages.[Result] Compared with the control,the tobacco plant height was increased by 3.01％-5.84％,while the number of valid leaves was increased by 5.56％-20.39％ in all the treatments with combined use of fertilizers.The ratio of sugar to nicotine of leaf was closer to 10±1,and the ratio of nitrogen to nicotine of leaf was closer to 1±0.1.In addition,the combined use of 750 kg/hm2 tobacco special base fertilizer and 292 kg/hm2 cake organic fertilizer had a better effect for improving the agronomic traits and flavor qualities than all the other treatments.[Conclusion] This study will provide reference for developing special full-aroma tobacco leaf product and new tobacco special fertilizers in Hunan.展开更多
ObjectiveThis study aimed to analyze the correlations of the main agronomic traits, yield and quality of hybrid cotton cultivars. MethodThe growth period, main agronomic traits, yield components, yield and quality of ...ObjectiveThis study aimed to analyze the correlations of the main agronomic traits, yield and quality of hybrid cotton cultivars. MethodThe growth period, main agronomic traits, yield components, yield and quality of 13 hybrid cotton cultivars were compared, and the correlations of their main agronomic traits, yield components, yield and quality were analyzed. ResultThe growth period of the 13 cultivars was about 123 d, and all of them presented strong growth potential throughout the growth period. The ginned cotton yield shared an extremely significant positive correlation with the first fruiting branch position, plant height, number of fruiting branches, number of bolls per plant, number of bolls per hectare and seed cotton yield; the first fruiting branch position and micronaire value shared a significant positive correlation. Keza No.1 and Chunzamian No.1 had the lowest micronaire value, 4.5. The specific strength of all the cotton cultivars ranged from 27 cN/tex to 30 cN/tex, presenting significant difference. In addition, there was extremely significant difference in the ginned cotton yield among all the cotton cultivars. ConclusionThe study provides theoretical reference for the cultivation of high-yield hybrid cotton.展开更多
文摘青贮玉米是优质饲料作物,对畜牧业的大力发展具有重要意义。为了探究青贮玉米品种的遗传多样性现状,以141个通过国家及各省区(市)审定的青贮玉米品种为材料,基于农艺及品质性状与SSR标记从生态区角度对供试品种进行遗传多样性分析。结果表明,13个农艺及品质性状的变异系数区间为10.30%~30.31%,平均为16.01%;多样性指数区间为0.50~0.71,平均为0.60。农艺及品质性状聚类将供试品种划分为5个组,同一生态区来源的品种多归为同一组。40个SSR标记共检测到482个等位变异,平均每个位点12.05个,多态性信息含量(polymorphism information content,PIC)变幅为0.27~0.89,平均为0.68。南方品种大部分聚集在同一组,与东华北、黄淮海和西北品种间的遗传距离均较远,分别为0.054、0.047和0.046。两种方法分析结果具有共性,但也存在一定的差异,南方品种在农艺及品质性状和SSR标记上均具有特异性,西北和黄淮海品种仅在农艺及品质性状具有特异性。将两种方法相结合,能更全面、准确的了解青贮玉米品种的遗传背景,为不同生态区新品种选育及推广种植提供依据和参考。
文摘[ Objective] The purpose was to study the correlation between main agronomic traits and single plant lint yield in upland cotton with high quality. [ Method] Twenty-four upland cotton lines with high quality were analyzed for single plant lint yield and 10 agronomic traits in a randomized, complete block at the agriculture experimental station of JXAU, Nanchang, China in 2007. They were divided into three types （ high, medium, low yield） based on single plant lint yield by Ward＇s method. A total of 11 traits of three types were compared. Correlation a- nalysis and stepwise regression analysis of 10 agronomic traits to single plant lint yield were carried out. [ Result] There existed statistically sig- nificant difference in bolls per plant, ~int percentage, lint index, fruit node numbers, growth period for three yield types. The high yield type ex- hibited the highest bolls per plant, lint percentage and lint index, the lowest fruit node numbers and the shortest growth period. Bolls per plant, boll weight and single plant lint yield were significantly and positively correlated. Fruit node numbers and single plant lint yield were significantly and negatively correlated. Bolls per plant, boll weight, and fruiting position number were the most important factors influencing single plant lint yield of upland cotton lines with high quality. [ Conclusion ] The results will have certain significance for the development of upland cotton variety with high quality.
基金Supported by Natural Science Fund of Ningxia(NZ0866)~~
文摘[Objective] The aim of this study was to observe the agronomic,yield and quality traits of Ningchun 4 and its parents under the same environmental conditions,as well as to carry out molecular detection on the background genes distribution of the corresponding traits.[Method]Ningchun 4 and its parents Sonora 64,Hongtu,Abbondanza,Quality were used as materials to detect the agronomic and quality traits,as well as to analyze the genetic variation laws by molecular determination method.[Result]Ningchun 4 had inherited the advantages of bigger spike,red and hard grain from Sonora 64 and higher 1 000-grain weight from Hongtu.However,it had also inherited the disadvantages of late-maturing from Sonora 64 and lower tillering ability from Hongtu;the grain quality of Ningchun 4 was slightly lower than the Sonora 64;Ningchun 4 had high quality subunit of 5＋10,which had good dough rheological properties.[Conclusion]Ningchun 4 had inherited the long photoperiod characteristics and no-resistant to slow-leaf rusting and stripe rust characteristics from Hongtu and low PPO activity,high yellow pigments content from parents.
文摘[Objective] This study aimed to investigate the effects of the combined use of cake organic fertilizer and tobacco special fertilizer on the growth and development as well as the quality of tobacco leaves.[Method] Different ratios of cake organic fertilizer and tobacco special fertilizer were applied.Then,the agronomic traits and leaf quality determining factors were measured and analyzed at different growing stages.[Result] Compared with the control,the tobacco plant height was increased by 3.01％-5.84％,while the number of valid leaves was increased by 5.56％-20.39％ in all the treatments with combined use of fertilizers.The ratio of sugar to nicotine of leaf was closer to 10±1,and the ratio of nitrogen to nicotine of leaf was closer to 1±0.1.In addition,the combined use of 750 kg/hm2 tobacco special base fertilizer and 292 kg/hm2 cake organic fertilizer had a better effect for improving the agronomic traits and flavor qualities than all the other treatments.[Conclusion] This study will provide reference for developing special full-aroma tobacco leaf product and new tobacco special fertilizers in Hunan.
文摘ObjectiveThis study aimed to analyze the correlations of the main agronomic traits, yield and quality of hybrid cotton cultivars. MethodThe growth period, main agronomic traits, yield components, yield and quality of 13 hybrid cotton cultivars were compared, and the correlations of their main agronomic traits, yield components, yield and quality were analyzed. ResultThe growth period of the 13 cultivars was about 123 d, and all of them presented strong growth potential throughout the growth period. The ginned cotton yield shared an extremely significant positive correlation with the first fruiting branch position, plant height, number of fruiting branches, number of bolls per plant, number of bolls per hectare and seed cotton yield; the first fruiting branch position and micronaire value shared a significant positive correlation. Keza No.1 and Chunzamian No.1 had the lowest micronaire value, 4.5. The specific strength of all the cotton cultivars ranged from 27 cN/tex to 30 cN/tex, presenting significant difference. In addition, there was extremely significant difference in the ginned cotton yield among all the cotton cultivars. ConclusionThe study provides theoretical reference for the cultivation of high-yield hybrid cotton.
