摘要
通过对９４个不同品种小麦在渭北地区干旱条件下的试验数据，分类建立小麦产量与产量因素的回归关系，并做了通径分析。结果表明，在分类小麦的关系中，穗粒数对产量的总影响和直接影响都最大，有效分蘖数对产量的影响随其增多而减弱，千粒重对产量的影响以中蘖型最大，而多蘖型与少蘖型均较小；在全部小麦品种的关系中，有效分蘖数、穗粒数和千粒重对产量的影响依次减弱。提出渭北旱塬小麦育种应在增加有效分蘖数（穗数）、稳定千粒重、挖掘穗粒数潜力上下功夫。
The tested data derived from 94 different wheat varieties under the drought
conditions on Weibei rainfed area were used to establish the regression relation between yield
and its components of wheat and conduct the path analysis.The result shows that the most
important factor of high production for highyielding varieties is the number of grains per spike
in different grouped wheat, and in the whole wheat varieties,the contributions of yield
components to yield are that the available tiller is the most,and the 1000 kernel weight is the
least.This paper has also put forward the wheat breeding way of increasing the number of
certain tiller, stabiliting the 1000 kernel weight and improving the kernels per spike potential in
Weibei rainfed highland,Shaanxi Province.\;
出处
《西北农业学报》
CAS
CSCD
1999年第2期20-21,共2页
Acta Agriculturae Boreali-occidentalis Sinica
关键词
小麦
产量因素
回归分析
通径分析
渭北旱塬
Wheat
Yield components
Regression
analysis
Path analysis
Weibei rainfed highland
