摘要
为筛选出适宜南方地区生长种植、外观优良且高产的大蒜资源,本试验以195份国内外大蒜种质资源为材料,系统调查了大蒜11个农艺数量性状在湖南长沙的表型,并进行了遗传多样性分析、相关性分析、主成分分析和聚类分析综合评价。结果表明:195份大蒜种质资源在南方地区表现出丰富的遗传多样性,变异系数分布范围为15.94%~45.87%,其中单头鳞茎质量在大蒜资源中变异程度最大。相关性分析结果表明:11个数量性状之间几乎都存在极显著或显著相关关系,其中与鳞茎性状具有相关性的植株农艺性状为株高、叶长、单株叶片数、地上假茎高和地上假茎粗,且都呈极显著正相关;主成分分析中前2个主成分的累计贡献率达到65.96%,包含的要素信息量可以基本反映11个数量性状的主要信息;通过聚类分析,195份国内外大蒜种质资源可分为4个类群,第Ⅰ类群和第Ⅳ类群的性状指标均较为优异,初步筛选出适宜南方地区生长的优质资源13份,为南方地区大蒜种质资源鉴定评价和优质新品种选育提供了参考。
In order to screen out garlic resources suitable to be grown and planted in southern China region and with good appearance and high yield,this experiment took 195 accessions of garlic germplasm resources at home and abroad as material;investigated systematically the phenotypes of 11 agronomic quantitative traits in Changsha,Hunan;and carried out genetic diversity analysis,correlation analysis,principal component analysis and clustering analysis.Results indicated that these 195 accessions of garlic germplasm resources showed abundant genetic diversity in southern China region.The coefficient of variation ranged from 15.94%to 45.87%,of which the single bulb weight had the largest variation in garlic resources.The correlation analysis showed that these 11 quantitative traits were almost extremely significantly or significantly correlated with each other.Among them,plant height,leaf length,leaf numbers of single plant,overground pseudostem high and overground pseudostem diameter were all significantly correlated with bulb traits.In principal component analysis,the cumulative contribution rate of the first 2 factors had reached 65.96%.The including element information quantity could basically reflect the major information of all 11 quantitative traits.Clustering analysis revealed that 195 accessions of garlic germplasm resources could be divided into 4 groups.The traits of group I and group IV were all relatively excellent.And 13 accessions of good quality resources were screened out to be suitable for growing in southern China region.They had provided references for identification,evaluation of garlic germplasm resources;and selection,breeding of high-quality new varieties.
作者
何巧芸
周智满
曾铮
袁晓戈
周建军
王延周
刘头明
HE Qiaoyun;ZHOU Zhiman;ZENG Zheng;YUAN Xiaoge;ZHOU Jianjun;WANG Yanzhou;LIU Touming(Institute of Bast Fiber Crops,Chinese Academy of Agricultural Sciences,Changsha 410205,Hunan,China;Chaling County Bureau of Agriculture and Rural Areas,Zhuzhou 412400,Hunan,China)
出处
《中国蔬菜》
北大核心
2022年第7期69-77,共9页
China Vegetables
基金
中国农业科学院科技创新工程专项(CAAS-ASTIP-IBFC)
中央级科研院所基本科研业务费专项(1610242021002)。
关键词
大蒜
种质资源
南方地区
农艺性状
聚类分析
评价
garlic
germplasm resources
southern China
agronomic trait
clustering analysis
evaluation
