短季棉霜前皮棉产量及其相关性状的关联度分析

Grey Relational Degree Analysis of Pre-frost Lint Field and Correlated Characters in Short Season Cotton

对短季棉霜前皮棉产量及其相关性状的关联度分析 ,可知霜前花率和衣分对霜前皮棉产量的影响较大 ,单株铃数和单株果枝数次之 ,铃重、果枝始生节位、株高、子指和生育期等对霜前皮棉产量的影响较小。选育过程中要分清主次 ,抓主要性状的改良 ,改进霜前花率和衣分并与其它性状相协调 。

In this paper, the correlated characters of pre frost lint yield were evaluated by use of grey related degree analysis method. The results of grey relational analysis indicated that pre frost cotton percent and lint percent were the hegemonic factors to the pre frost lint yield, followed by lint index, number of boll per plant, total bolls, unfertilized seed, number of fruit branch per plant, boll weight, node of first fruiting branch, plant height, seed index and growth period. If pre frost cotton percent and lint percent are improved, these correlate characters are well coordinated, raising pre frost lint yield is possible.