小麦热处理研究

wheat Heat stress project

小麦籽粒形成和灌浆期间在温室、大田对小麦穗、旗叶进行热处理，研究结果表明：１．小麦籽粒形成后如遇高温，正常灌浆进程受到抑制，粒重下降，２．小麦旗叶在高温条件下，叶面薄膜组织受损，影响光合作用正常进行，３．小麦品种间对高温反应不同，为筛选抗耐高温品种提供了可能。

Heat treatment of wheat spikes and flag leaves were done during the grain-filling period and kernel development in the greenhouse and the field. The results indicated that the occurrence of hot days after the kernel development period inhibited normal grain - filling procedure and grain weight decreased. When the flag leaves grew under high day temperatures condition, membrance injury damaged normal photosynthesis proceeding. High day temperatures -reaction differ between wheat cultivars. Hence, it is possible to screen more tolerant and resistant cultivars from heat treatment.