摘要
对广西2000--2007年通过审定的48个普通玉米杂交品种进行杂交模式分析，探讨在广西自然生态条件下不同杂交模式的应用效果，为今后玉米杂交种的选育利用提供参考。结果表明：这些审定品种以单交种为主，其试验产量虽逐年提高，但增产幅度不大，未发现突破性品种；其亲本自交系来源以热带种质为主，温带种质为辅；其杂交模式以热带种质×温带种质为主，热带种质×温热种质为辅，热带种质×热带种质以及其他杂交模式为补充。
Fourty eight maize hybrid varieties released from 2000 to 2007 in Guangxi were analyzed, and the application effect of different hybridization models under the natural habitat conditions in Guangxi were studied to provide some reference for the breeding and utilization of maize hybridization in the future. The results showed that most of the maize hybrid varieties were single crosses. Although the experiment yield of the released varieties had been getting increased every year, the yield increase was in a narrow range, and no breakthough variety was obtained. The tropical germplasm gave the first place to temperate germplasm to be the origin of parent inbred lines of the released varieties. The result also indicated that the hybridization model of the released vatieties was with the model of ＂tropical germplasm × temperate germplasm＂ to be the first, the model ＂tropical germplasm × temperate-tropical germplasm＂ to be the second, the model ＂tropical germplasm × tropical germplasm＂ and the other model to be the supplement.
出处
《广西农业科学》
CAS
CSCD
2008年第3期393-396,共4页
Guangxi Agricultural Sciences
基金
国家公益性行业(农业)科研专项(nyhyzx07-003-03-04)
关键词
广西
玉米
审定品种
杂交模式
分析
maize
released variety
hybridization model
analysis
Guangxi
