芦笋种质资源形态多样性分析

Morphological diversities of Asparagus officinalis L. germplasm resources

对46份芦笋种质进行形态多样性分析,结果表明:第一至第三主成分的方差贡献率分别为19.87%、15.38%、11.92%;二级分枝长度、主茎粗、二级分枝数、二级分枝粗、一级分枝粗、鳞片宽、笋鳞片长度、笋粗、笋鲜重、第1分枝以下的鳞片数量、第1分枝高度是芦笋形态分化的主要指标,也是芦笋选育种形态性状选择上关注的重点。基于形态性状的聚类分析,将46份芦笋种质分为两大类:Avalim、Pacific Endeavour、Pacific Peak、Backlim、Pacific Challenger 2、硕丰、JK107、Herkolim、Thielim、京绿芦1号、JK101、Precoce、Pacific 2000归为一类,其余33份种质归为一类。

Through the morphological diversity analysis of 46 asparagus accessions, the result shows that first to three principal components represented 19.87%, 15.38%, and 11.92%. The length of secondary branches, diameter of main stem, number of secondary branches, diameter of secondary branches, diameter of primary branches, width of scale, length of spear scale, diameter of spear, fresh weight of spear, scale number below first panicle branch and plant height to first panicle branch are the main indicators of asparagus morphological differentiation. These factors are the focus of morphological traits selection on asparagus breeding. Based on the morphological cluster analysis, the 46 asparagus accessions were divided into 2 groups, the first group included Avalim, Pacific Endeavour, Pacific Peak, Backlim, Pacific Challenger 2, Shuofeng, JK107, Herkolim, Thielim, Jing lv No.1, JK101, Precoce and Pacific 2000. The second group included the other 33 asparagus accessions.