西藏春小麦育种材料主要农艺性状与产量的相关、通径分析

The Correlation and Path Analysis on The Yield and Main Agronomic Traits of Spring Wheat breeding material in Tibet

利用2015年西藏拉萨地区种植的17份春小麦育种材料进行了9个主要农艺性状与产量的相关、通径分析。结果表明:株高与产量显著正相关,株高、有效分蘖数、穗长对产量的直接贡献最大。在进行高产育种时,除了考虑群体千粒重、穗粒数、成穗数等产量构成因素,还得考虑适宜株高、协调好穗长、有效分蘖数等各个性状之间的关系。

In this article, 17 Spring Wheat breeding materials were planted in Lhasa, and The Correlation and Path Analysis on the yield and 9 main Agronomic traits of the breeding materials. The results showed that： yield was positively and significantly associated with plant height. Plant height, effective tiller number, ear length were most direct contributed to the yield. So the strat- egies of high yield breeding, in addition to consider groups traits such as the ear number per spike, spike grain number, also have to consider appropriate plant height, to coordinate the rela- tionship between the various traits ,such as spike length, effective tiller number.