Study on characters of mutants induced from rice variety Xiu Shui 27
1988
Zhang Mingxian | Luo Rongting | Xu Baocai (Zhejiang Provincial Academy of Agricultural Sciences, Hangzhou (China). Inst. for Application of Atomic Energy) | Tao Rongxiang | Weng Jinping
The keng rice variety for later season, "Xiu Shui 27" with semidwarf, long growing period and good yield was irradiated by 60 Co gamma-rays, and some different mutant strains were selected in the following generations. The 9 earlier mutants which were 6-11 days earlier than "Xiu Shui 27", 5 dwarf mutants which were shorter than original variety, 8 mutants with 6 percent more protein content than parent were selected. The thousand grain were heavier and more grains in per panicle were also selected in following generations. After test of resistance, resistance of most mutant strains were kept the same as original variety, but the resistance of a few mutants were raised. Some mutants not only have kept the better characters which were semidwarf lodging resistance, blast resistance from original variety, but also have got earliness and large panicle character. So it has good yield level and maybe become a fine mutant variety. In the other hand, more mutants which have good characters can be used in rice breeding.
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