论文部分内容阅读
作者于1976年在“章邱大葱”品种中发现并获得了雄性不育株,在此基础上对葱的不育性进行了研究。葱不育株按雄蕊发育状态分为Ⅰ、Ⅱ和Ⅲ型,这三种类型的花粉粒都是败育的,属完全不育,而雌蕊的生殖力正常。Ⅱ型和Ⅲ型的花药瘦小,花丝短,易与可育株区分。除全不育株外,尚有频率很低的半不育株出现。参试23个葱的自然群体中有22个出现不育株,其中大葱自然群体不育株出现频率显著高于分葱,最高达到50%左右。供研究的4个品种中,有3个品种完全不育株开放授粉的异交于一代不育株率达90%以上;可育株开放授粉的异交子一代可育株率达97%以上。表明葱的不育性是可以遗传的。
The author found and obtained male sterile plants in “Zhangqiu green onions” varieties in 1976, and studied onions sterility on the basis of this. Onion sterility according to stamen developmental state is divided into Ⅰ, Ⅱ and Ⅲ, these three types of pollen grains are aborted, is completely sterile, and pistil normal fecundity. Type II and III anthers thin, filament short, easy to distinguish with fertile plants. In addition to all sterile plants, there are still a very low frequency of semi-sterile plants appear. Twenty-three of the natural populations of 23 green onions showed infertility strains. Among them, the frequency of infertile plants in natural populations of onion was significantly higher than that of onions, and the highest was about 50%. Among the four cultivars studied, three out of the total sterile lines were pollination-alienated and the rate of sterile lines of the first generation was more than 90%. The rate of fertile plants with open pollination was more than 97% . Show that onion infertility is heritable.