Abstract:

In this paper, the growth period, rust resistance, plant height, seed yield and yield components of 5 new triticale lines were examined. The results showed that the new triticale line P2 was the best among 6 genotypes, which had the highest seed yield and was resistant to the rust. Among 4 seed yield components, grain weight per spike had the highest positive effect on seed yield. Therefore, this parameter should be paid much more attention in triticale breeding, in the meantime, coordination for the 4 yield components should also be considered.

Key words: Triticale, Seed yield, Yield components

摘要：

本文研究了5个小黑麦新品系(Triticale Wittmack)的物候期、田间抗病性、株高、种子产量,以及产量构成因素(穗长,小穗数,穗粒数,穗粒重)对种子产量的贡献。结果表明,P2的实际和预测的种子产量均最高,抗锈病能力最强,为最好品系;在种子产量构成因素中,穗粒重对种子产量的正向直接效应最大,在小黑麦育种中应首先考察穗粒重这一性状,同时考虑穗长与穗粒数、穗粒重与穗粒数之间关系的协调均衡。

关键词: 小黑麦, 种子产量, 产量构成因素