玉米子粒脱水速度的遗传及相关分析和技术措施对脱水的影响

Inheritance and Correlation Analysis of Dehydrating Speed of Corn Seeds and Effect of Technical Measures to the Dehydration

本文研究了玉米杂交种子粒脱水速度与其亲本及植株主要性状的关系；并对几种技术措施对脱水的影响进行了初步探讨。结果表明杂交种子粒脱水速度与母本的脱水速度呈显著的正相关；与根干重、根冠比、植株含水量、包叶数目、穗行数呈显著的负相关。几种技术措施均能显著地降低玉米子粒水分，其中以扒皮晾晒效果最佳，可将脱水速度提高一倍以上．其产量差异不显著。

This paper studied the relation between dehydrating speed of hybrid seeds of Corn and main traits of its parents and explored preliminarily the effect of technical measures to dehydration. The results showed that the dehydrating speed of seeds from maize hybirds was significantly and positively correlated with that of their female parents and was signifi cantly negative correlated with the root dry weight, root shoot ratio, the water content of the plant, the number of subtending leaves and the number of ear-row. The water in seeds of maize can be reduced significantly with technical measures. The best one of the technical measures was in peel off the subtending leaves and expose the ears to sun, which could increase the dehydrating speed by twice, but the difference of grain yield was not prominent.