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太谷不育小麦,经过遗传分析和鉴定,确认它是受显性单基因控制的核不育小麦,是国内外稀有的珍贵材料。由于太谷核不育小麦连年进行开放授粉,花粉来源不同,遗传基础复杂。近几年来,有关科研单位对细胞学的观察,特别是对小孢子退化的时期说法不一。为了研究和鉴定不同遗传基础的太谷核不育小麦的小孢子退化过程和它的不育类型,我们进行了细胞学观察和研究。材料与方法1979年,我们在开放授粉的试验田取样,从抽穗前的造孢时期到花粉粒成熟期,隔天取穗固定一次,先后固定材料10次,共64株,900多个穗子。抽穗后每株套袋自交,
Taigu sterile wheat, after genetic analysis and identification, to confirm that it is dominated by dominant single-gene sterility of wheat, is a rare precious material at home and abroad. Since Taigu nuclear sterile wheat is pollinated year after year, the sources of pollen are different and the genetic basis is complex. In recent years, the scientific research units on the observation of cytology, especially on the period of microspore degeneration of different opinions. In order to study and identify the microspore degeneration process and its sterility types in different genetic basis of Taigu nuclear sterile wheat, we conducted cytological observations and studies. MATERIALS AND METHODS In 1979, we took samples from an open pollination field and fixed the ear the next day, from the sporulation period before heading to the pollen maturity stage. The material was fixed 10 times, with a total of 64 plants and more than 900 ears. After heading each bagging self-pay,