摘要
为了解决玉米种质遗传基础狭窄的问题,将CIMMYT种质Pob45导入东农251的母本自交系合344中,研究CIMMYT种质对其产量及其它农艺性状的改良效果。结果表明:合344改良系所组配的杂交组合中较对照东农251增产的组合达33.3%。合344改良系所配的杂交组合的株高、穗位高、雄穗分枝数增大的趋势较明显,产量和籽粒长度有一定的改良效果。因此,Pob45可用来改良现有种质的产量和产量性状。
In order to solve the problem of narrow genetic base of maize germplasm,CIMMYT germplasrn Pob45 was introduced to the inbred lines He344,which was female of Dongnong 251. The improvement effect of yield and other agronomic characters was studied. The results showed that in the hybrids crossed by the improved lines of He344, yield of 33.3% combinations were higher than the CK variety Dongnong251. The plant height, ear height and tassel ramification number of combinations with improved He344 were significantly improved. Partial agronomic traits had certain effect, such as yield and seed length. Therefore,The Pob45 could be used to improve yield and correlative traits of available germplasm.
出处
《黑龙江农业科学》
2012年第4期5-8,共4页
Heilongjiang Agricultural Sciences
关键词
玉米
种质
改良
maize
germplasm
improvement
