唐古特白刺果用候选优株主分量分析及初选研究

Evaluation and selection of plus trees of Nitraria tangutorum Bobr. by PCA

摘要: 利用主分量及其贡献率构建选优指数进行唐古特白刺多性状综合选优,从39个单果候选优株中选择确定20株优株,中选优株群体平均果序重、每序核果数、单果重、果长、果径、出肉率分别比单果候选优株群体平均提高23.17%、6.17%、18.55%、3.02%、7.96%、1.59%.

Abstract: On the basis of the principal components and their contributions,20 plus trees of Nitraria tangutorum Bobr.were selected from 39 candidate trees.Their fruiting-cyme,weight,drupe weight,drupe length,drupe diameter and percentage of sarcocarp were 23.17%,6.17%,18.55%,3.02%,7.96% and 1.59% higher than those of candidate group respectively.