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:1 994年将雄县红小豆 (Phasealusangulariswight)种子搭载“940 70 3”返回式卫星。试验结果表明 ,太空环境对SP1代种子的发芽率和生长发育有明显的抑制效应 ,卫星搭载的种子发芽率仅为 1 5% ,现蕾、开花、结荚、成熟的生育时期较对照晚7d。在SP2 代群体 ,百粒重发生显著变异 ,单株籽粒明显增大 ,大粒突变频率为52 9% ,表明太空环境对红小豆大粒性状有较好的诱变作用。从SP2 检出的大粒突变株 ,在SP3 代的平均百粒重为 1 6 8～ 2 1 3 g ,较对照 1 1 5g明显增重 ,表明SP2 代的大粒性状为真正的基因突变 ,能够遗传给后代。从SP3 代群体中 ,已获得百粒重与单株产量均明显优于对照的优异突变株 1 2个 ,且已进入SP4代 ,可望获得综合性状优良的大粒突变系 (品种 )。
: In 1994, the seeds of Phasealusangulariswight in Xiongxian were fitted with “940 70 3” return satellites. The results showed that the space environment significantly inhibited the germination rate and growth of SP1 seeds. The germination rate of seeds carried by satellite was only 15%. The growth period of budding, flowering, podding and ripening was 7 days later than the control . In SP2 generation, there was a significant variation in the 100-kernel weight. The kernel weight per plant was significantly increased, and the frequency of the large-size mutation was 52.9%. This indicated that the space environment had a good mutagenic effect on the trait of the adzuki bean. The large grain mutant detected from SP2 showed an average weight of 1 68 to 231 g in the SP3 generation, which was significantly heavier than that of the control 115 g, indicating that the large grain trait in the SP2 generation is a true gene mutation that can be inherited For future generations. From the SP3 generation population, 12 excellent mutant strains with 100-grain weight and single plant yield were obtained which were superior to the control and had entered into the SP4 generation. It was expected that a large grain mutant line with good comprehensive characters could be obtained.