| 摘要: |
| 本实验对三种克服小黑麦 F1不育性方法(自然结实、分株、回交)的效果进行了两年(1962、1963)的重复比较研究。鉴于小黑麦存在的关键问题是结实率不高和不饱满,测定的主要项目是当代的结实率、饱满度和发芽率,同时又考虑到最后的育种效果。研究了自然结实的概念,并探讨了自然结实在小黑麦育种上应用的价值。对分株及回交在克服小黑麦不育性上的价值也进行了探讨。 |
| 关键词: 普通小麦 不育性 种子发芽率 六倍体小黑麦 比较研究 种子饱满度 自然结实率 回交 分株对 |
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| A COMPARATIVE STUDY OF THE EFFECT OF NATURAL SEED SETTING,TILLER DIVISION AND BACKCROSS ON OVERCOMING THE STERILITY OF TRITICALE F_1 |
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| Abstract: |
| 1.In 1958,the average natural seed setting of triticale F_1 from various combinations was 0.67 seed per plant,0.016 seed per spike,In 1963,however,when seeding was practiced 15 days earlier,the avera- ge percentage of natural seed setting from 21 combinations of triticale F_1 was 24.14 seeds per plant,0.62 seed per spike,almost 40 times that of the former experiment. 2.Rarely,a few seeds could also be obtained through the selfen- ing of triticale F_1. 3.No strict parallel relation between the percentage of ... |
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