摘要
为挖掘利用优质百脉根种质资源,促进其育种工作,采用田间调查和室内考种分析两种方法,对引进的69份俄罗斯百脉根种质材料的9个农艺性状进行了鉴定和评价。结果表明,69份材料各具特点,差异明显,类型广泛。单株重变异系数最大,为57.58%,变异明显;生育期变异系数最小,仅为6.92%。通过主成分分析,从9个农艺性状中提取出3个主成分因子,即草产量、生育期(成熟)和千粒重,提供的信息量占全部信息量的87.468%。利用这3个主成分因子进行系统聚类,将69份俄罗斯百脉根种质材料划分为三大类群。第Ⅰ类群属晚熟半匍匐中产型材料,第Ⅱ类群属早熟匍匐低产型材料,第Ⅲ类群属中熟直立高产型材料。结果表明,第Ⅲ类群材料综合产量性状最好。
In order to utilize Lotus corniculatus germplasm resources effectively for breeding,nine agronomictraits of 69 L.corniculatus germplasm resources introduced from Russia were evaluated and classified based on investigation results in field and indoor.The results showed the characteristics of 69 materials had obviously difference and varioustypes.The variation coefficient of the fresh weight per plant was the maximal（57.58%）;While the growth period had the minimum variation coefficient of 6.92%.The nine agronomic characters were composed of 3independent principal components,including grass yield factor,growth period（mature）factor,and thousand seed weight factor.The cumulative contribution of the 3factors was 87.47%.Through cluster analysis based on the 3principal components,the 69 Russian L.corniculatus germplasm resources in the present study were divided into 3groups.Materialsin the first group had the trait of latematuring,half stolon and middle production;The second group was the precocious,procumbent and loweryield materials.The third groups belonged to middle maturity,upright and highyielding materials,and the third group had the best agronomic traits in the comprehensive yield.
出处
《草业科学》
CAS
CSCD
北大核心
2016年第9期1779-1787,共9页
Pratacultural Science
基金
全国牧草种质资源保种项目(NB2130135)
关键词
俄罗斯
百脉根
农艺性状
主成分分析
聚类分析
Russia
Lotus corniculatus
agronomic traits
principle component analysis
cluster analysis
