摘要
考察新麦草单株种子产量以及与种子产量相关的农艺性状,对多样本进行相关分析、逐步回归分析和通径分析的结果表明,单株穗数和结实率对新麦草种子产量构成的直接贡献最大,是制约新麦草种子产量的主要因素,其次是每节小花数;而每穗节数、单穗饱满种子数和结实率都通过单株穗数这一性状对种子产量产生显著的间接作用;回归分析结果显示提高结实率对新麦草种子的增产效应最为显著。
The studies on seed yield of Russian wildrye grass(Psathyrostaehys juncea Nevski) were summarized.Analysis approaches of correlation,regression and path coefficient were employed to test data of field trials.The result shows that the effect of spikelets in each shoot make conspicuous contribution on seed yield.It also has indirect effect on seed yield with other three seed yield components: nodes in each spikelet,full seed numbers and pollination rate.The pollination rate is another important seed yield com...
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2008年第3期23-27,共5页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古科技厅草业研究院项目(20040601)
内蒙古自然科学基金项目(200711020416)
关键词
新麦草
种子产量
通径分析
Psathyrostaehys juncea Nevski
seed yield
path coefficient analysis
