摘要： 本研究测定了不同温度条件对4种不同类型32个玉米品种种子吸水吸胀和萌动特性的影响。结果表明:玉米种子在不同温度下吸水吸胀及萌动过程中种子含水量随时间的变化动态符合对数函数y=aLn(x)+b变化曲线, 但不同温度下种子吸胀和萌动过程所需时间、种子含水量变化以及最大萌动率差异显著。相同温度下种子吸收液态水过程与种子百粒体积、原始含水量、皮层比例、胚比例、胚乳比例和胚比都具有一定的关系。

关键词: 温度, 玉米种子, 吸胀, 萌动

Abstract: The characteristics of imbibitions and protrusion of four different types maize seeds(32 hybrids in all) under different temperatures were determined. Results showed that dynamics of water contents in seeds fit to logarithm model y = aLn(x) + b during the preocesses of imbibitions and protrusion under different temperatures. Siginfieant differentces were also observed among time, the changes of seed's water contents and the max protrusion rates. There is a relationship among the course of seeds' absorbing water and seeds 100-keruel weight, 100-kernel volume, original water content, cortex dry weight proportion, embryonic dry weight proportion and the proportion of embryo proportion to endosperm proportion.

Key words: Temperature, Maize seed, Imbibitions, Protrusion

中图分类号: 

• S513.01