文冠果种子产量影响因素分析

Analyze of Influence Factors of Seed Yield in Xanthoceras sorbifolia Bunge

作为木本能源植物,文冠果的种子产量问题是制约其大力开发利用的主要因素。通过观测357个单株树形树势、叶片性状、果实性状、种子性状、产量相关性状、含油率等方面共26个性状,进行相关、多元回归和通径分析,找出影响其产量的主要因素。结果表明:产量与地径、冠幅、叶长、叶面积、果长、果宽、每果种子数、果实鲜重、结果个数呈极显著正相关,与果皮厚、心皮数、种长、种宽、百果重显著正相关,与枝下高呈极显著负相关。果实鲜重、出籽率、结果个数、每果种子数、种宽是影响单株种子产量的主要因素。果实鲜重、结果个数和出籽率对种子产量的贡献较大,是选择高产单株的主要选择性状。

As woody energy plant,Xanthoceras sorbifolia Bunge’s seed yield is the main factor restricts its exploiture.26 characters about plant shape,leaves,fruits,seeds,yield and oil content of 357 Xanthoceras sorbifolia Bunge plants were analyzed by using correlation,multiple regression and path analysis.The main factors restrict seed yield were found.The result showed that seed yield was significantly positively correlated with basal diameter,crown width,leaf length,leaf area,fruit length,fruit width,seed number per fruit,fruit weight and fruit number.It was positively correlated with pericarp thickness,carpel number,seed length,seed width and weight of 100 fruits,and was negatively correlated with height below the first tress.Fruit weight,seed ratio,number of fruit,seed number per fruit and seed width were the main traits affected plant seed yield.Fruit weight,fruit number and seed ratio had more contribution to seed yield,and these characters were the main characters to considerate when choose high seed yield plant.