杂种小麦籽粒成熟期间的优势性状研究

本文通过对杂种小麦(CHA 杂种)和普通小麦品种的比较研究,分析了杂种小麦在籽粒成熟过程中的几个优势性状。结果表明:杂种小麦顶部叶片的光合速率,光合速率高值持续期和有效叶面积等光合特性均优于普通小麦品种。在光合速率日变化方面,杂种小麦和普通小麦品种的最高值差异显著,而最低值则差异不大,表现出杂种小麦对强光的适应力强,具较大优势;而在弱光下,则难以发挥优势的特性。在籽粒增重上,杂种小麦也表现出灌浆速率大,高值持续时间长等特点。矮秆大穗型杂种小麦的产量因素构成则表现为每穗粒数多或粒重高,穗粒重高的显著优势。

Research on the Dominant Characters of Hybrid Wheat in Ripening Stage

Through the comparative studies between hybrid wheat(CHA hybrid)and comman wheat cuhivars,some dominant charactors of hybrid wheat during it's ripening stage was analysed.The results are as follows:The rate of photosynthesis,duration of high rate of photosynthesis and effective leave area of the flag leaves of hybrid wheat are all better than those of common wheat;The difference between hy- brid wheat and common wheat cultivars is significant in the maximum daily photosynthesis rate,but is lit- tle in the m...