湖北省大蒜资源主要农艺性状及其与大蒜素含量的关联分析

Correlation Analysis of Agronomic Characters and Allicin Content for Garlic Resources in Hubei Province

为充分了解湖北省大蒜(Allium sativum L.)资源之间的亲缘关系及大蒜素含量,以38份大蒜资源为材料,对其农艺性状的遗传多样性及其大蒜素含量的关系进行分析。结果表明,湖北省栽培的大蒜种质资源表型变异丰富,其中,假茎高的变异系数最大(46.5%),其次是蒜薹质量(43.91%)、鳞茎盘厚(40.48%)和鳞茎质量(39.28%);数量性状的多样性指数均大于质量性状的多样性指数,且株高的多样性指数最大(2.05)。农艺性状的聚类分析表明,38份大蒜资源分为两大组群,不同类群相似性较小,亲缘关系较远;同一类群相似性较大,亲缘关系较近。农艺性状和大蒜素含量的主成分分析表明,营养生长构成因子、产量构成因子和营养品质构成因子构成了主要的3个因子,贡献率达80.913%。通过大蒜产量及大蒜素含量多个因子综合评价,筛选出较好的育种材料9份。

To fully understand the genetic relationship among garlic resources in Hubei province and thier allicin content,the genetic diversity of 38 garlic resources were conducted in the present study,the agronomic characters and the allicin content were analyzed.The results showed that the morphological diversity was high among accessions assessed.The main height of pseudo-stem variation was clover number(46.5%),followed by garlic-scape weight(43.91%),thick of bulb plate(40.48%)and bulbs weight(39.28%).The index of genetic diversity of the agronomic traits of quantitative characteristics was higher than qualitative character,and the largest one was plant height(2.05).Based on cluster analysis of agronomic traits and principal components analysis,38 garlic resources in Hubei were divided into two groups,and each group had its respective character.Agronomic traits and the allicin content were analyzed by principal component analysis,the main three factors were constituted by vegetative growth,yield components and nutritional quality,the contribution rate was 80.913%.Multiple factors comprehensive by the production of garlic and allicin content was evaluated,nine breeding materials were selected.