摘要
以湖北省 1 0个小麦品种 (系 )为试验材料 ,研究各个品种 (系 )的经济系数与生物学产量、株高、穗颈长和粗、剑叶长和宽、结实小穗数、不实小穗数、穗长、小穗密度、穗粒数、穗粒重、茎粗的相关性。结果表明 ,经济系数与其他若干性状在相关方向和程度上均有差异。同时用逐步回归分析了经济系数与各性状的回归关系。结果表明 ,大多数品种 (系 )的经济系数与生物学产量及穗粒重显著相关 ,同时某些品种 (系 )的经济系数与其他变异参数也显著相关。可见 ,以经济系数作为小麦高产及超高产育种的选择指标是可行的。
The correlation between economic coefficient and 13 characters ,that is biology yield,plant height,wheat neck length, wheat neck thickness, sword leaf length, sword leaf width, seed setting spikelet number, sterile spiketlet number, spike length, spikelet density, grain number per stachys, grain weight per stachys and stem thickness were analysed on 10 wheat varieties (strains)from Hubei Province. The results indicated that the correlation between economic coefficient and the characters were different in both degree and direction. Using the method of stepwise regression analysis, it was found that the correlation between economic coefficient and biology yield,grain weight per stachys were significant in most varieties, and some varieties had significant correlation between economic coefficient and other charaiters. These can be concluded that it is feasible and general to take economic coefficient as selection goal of breeding for high yield.
出处
《湖北农学院学报》
2002年第6期486-492,共7页
Journal of Hubei Agricultural College
基金
湖北省教育厅资助项目 (0 62 )
关键词
小麦
经济系数
性状
相关性
逐步回归
wheat
economic coefficient
character
correlation
stepwise regression
