小麦在我区灌浆至成熟阶段,常遇到30℃或30℃以上的高温,致大气干旱,促使小麦植株呈现早衰,籽粒灌浆不饱满,千粒重下降等状况,一般减产5-10%,重者则在20%以上.为了掌握小麦抗衰性遗传规律,以便将抗衰性列为重点育种目标之一,我们特对抗衰与早衰品种杂交组合的F_1、F_2、F_3和杂种一代与早衰亲本回交进行了试验研究. Wheat in our district grouting to mature stage, often encounter 30 ℃ or above 30 ℃, causing drought in the atmosphere, prompting wheat plants premature aging, grain filling is not full, 1000-grain weight reduction and other conditions, the general reduction of 5-10% In order to grasp the genetic law of resistance to wheat, in order to make the anti-aging as one of the key breeding objectives, we specialize in F_1, F_2, F_3 and F1 hybrids with early progeny parents Pay to conduct a pilot study.