摘要
水稻干种子经空间诱变，在距地面２００～３００ｋｍ高空运行１５天回收种植。结果表明ｓｐ１代出现了种子发芽率和成苗率降低，中后期生长不整齐，抽穗期不一致，不实率降低等现象。对ｓｐ２代群体调查的１３个农艺性状，均出现广泛变异及正反两方向的强烈分离。并获得了绥９６ｓｐ２１３～１１４，集７个主要农艺性状均优于ｃｋ的突变株。
Rice seed travelled on satellite which was 200￣300km away from the earth 15 days for mutation were planted. Results showed that in SP 1, germination rate and seedling rate dropped, growth and heading rate were uneven and fertility of spikelets decreased. In Sp 2, however, compared with other mutations this kind of mutation has much wider spectrum and greater separation in 13 agricultural characters. Some hopeful mutants with 7 main agricultural characters better than ck, such as Sui96-sp-213-114, have been gotten.
出处
《黑龙江农业科学》
1997年第4期1-4,共4页
Heilongjiang Agricultural Sciences
关键词
空间条件
诱变育种
水稻
Space condition, Mutation breeding, Character variation of SP 2
