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七十年代以来,矮秆小麦已成为我国高产育种的重要目标之一。但矮秆品种普遍出现的小麦早衰现象使灌浆受到影响,籽粒不饱满,已引起人们的重视。有人提出,矮秆早衰是由于籽秆比大、库源比例失调;据植保方面的研究,认为早衰完全是由于病害所致。两种观点都有一定的实验依据。国外尚缺乏专题资料。因此进一步探讨矮秆品种早衰问题,对确定育种目标和合理选用矮秆品种都具有重要的意义。材料和方法为了研究株高与早衰的关系,选用高秆品种为丰产3号(株高110厘米)和184(105厘
Since the seventies, dwarf wheat has become one of the important goals of high-yield breeding in our country. However, the phenomenon of premature decline of wheat in dwarf cultivars affected the grain filling, and the seeds were not full, which attracted people’s attention. It was suggested that dwarf premature senescence is due to large stalks, the source of the imbalance; According to plant protection research, premature aging is completely due to disease. Both views have some experimental basis. Foreign lack of special information. Therefore, to further discuss the problem of premature decline of dwarf varieties is of great significance for determining the breeding objectives and the rational selection of dwarf varieties. Materials and Methods In order to study the relationship between plant height and premature aging, the selection of high-stalk varieties of high yield 3 (height 110 cm) and 184 (105 PCT