51份饲用薏苡种质的农艺性状和营养成分评价

Evaluation of the agronomic characteristics and nutritional components of 51 Coix lacryma-jobi germplasms in Hunan

为筛选优异饲用薏苡种质资源,本研究以51份薏苡(Coix lacryma-jobi)野生种质资源为材料,测定了粗蛋白、粗纤维、灰分、粗脂肪、钙、磷、鲜草产量、株高、茎粗和分蘖共10个植物性状,并对各性状进行了相关性、主成分和聚类分析与隶属函数法的综合评价。结果表明:1)产量因子、矿物质因子、粗灰分因子和粗脂肪因子是4个主要因子,对变异的累积贡献率可达66.16%;2)可将51份薏苡种质分为3类,通过综合品质评价得到51份中品质更为优良的10份种质,分别为隆回薏苡、YY03-02、小黑壳、YY-37、YY-21、YY17-32、YY17-07、YY03-09、YY17-12和YY17-03。本研究为选育农艺和品质性状优良且适于湖南推广的薏苡品种提供了种质材料和理论支撑。

To breed Coix lacryma-jobi for feed,51 germplasm resources were analyzed for their crude protein,crude fiber,ash,crude fat,calcium,phosphorus,fresh grass yield,plant height,stem thickness,and tiller total.Fuzzy membership function,correlation analysis,principal component analysis,and cluster analysis were used to evaluate these traits,and the following results were obtained.(1)The cumulative contribution rate of the four main factors,namely yield,mineral,crude ash,and crude fat,to the total variation reached 66.16%.(2)The 51 C.lacryma-jobi germplasms were systematically clustered into three categories.Of these,10 germplasms with high comprehensive quality evaluation scores were selected(Longhui coix,YY03-02,Xiaoheike,YY-37,YY-21,YY17-32,YY17-07,YY03-09,YY17-12,and YY17-03).The present study offers germplasm materials and theoretical support for the selection of C.lacryma-jobi varieties with excellent agronomic and quality traits suitable for production in Hunan.