玉米品种农艺性状间相关和通径分析

A CORRELATION AND PATH—COEFFICIENT ANALYSIS OF AGRONOMIC CHARACTERS OF MAIZE VARIETIES

摘要:

通过对不同品种在多环境条件下的子实产量及稳定性的通径分析,认为倒伏对玉米的产量及其稳定性的影响最大。其次是生育期对产最的影响,生育期的长短与产量呈正相关,同时又与稳产性呈负相关。再次单穗粒重和百株穗数比其它经济性状对产量及其稳定性的直接影响均人,但又互为制约因素。因此,在实际育种工作中,应注意选育抗倒性强、生育期适宜、百株穗数和穗粒重的合理结构。

Abstract:

Using the method of the path—coefficient analysis Studied the grain yield and stability of different maize varieties under the condition of poly-environment. The results showed that Lodging affected the yield and its stability most; the length of the growth period duration had a negative relationship with grain yield; the yield per ear and the ears of 100-plant exerted a greater direct influence on yield and its Stability than other agronomic characters. We should pay attention to the lodging resistance, the suitable Length of the growth period duration, the ears of 100—plant and the yield per ear.