关键词: 离子束, 双胚苗水稻, 农艺性状, 谷粒性状, 相关分析

Abstract:

In order to tap apomictic germplasm and provide reference to a line hybrid rice breeding, a preliminary research regarding agronomic traits, grain traits, correlation between grain traits has been made on the mutant with twin-embryo seedling by ion beam in auto-tetraploid rice, the closely relative strains and mediated progeny. The results showed that the plant type of diploid strains twin seedlings was smaller, the number of spikelets main spike was more, grains was smaller, grains density was higher and largest contributed to the single grain weight, compared with the twin seedlings tetraploid strains; the plant type of elymus mediated strains was larger, the number of spikelets main spike was more, grains was larger, grain density was higher, single grain weight was higher, grain volume contributed largest to the single grain weight; the original parent were not significantly different at the indicators parameters.

Key words: ion beam, twin-embryonic rice, agronomic traits, grain traits, correlation analysis