摘要
针对目前北方杂交粳稻发展中存在的问题 ,笔者结合自己多年的育种实践 ,提出了杂交粳稻育种的研究方向和技术路线。
In view of the existing problems in the development of japonica hybrid rice in Northern China, the authors proposed the research orientation and technical approaches for japonica hybrid rice breeding on the basis of the breeding practices of many years. a) Correctly understand and utilize heterosis in rice. By way of raising yield potential of both parents and making use of the additive effects of genes to increase the standard heterosis of F 1 hybrids; To improve grain quality of F 1 hybrids, the breeding of quality parents should be intensified because of the negative heterosis in some grain quality characters. b) Ideal plant type should be paid more attention to in japonica hybrid rice breeding. The plant types of both parents should be favourable not only to a full play of F 1 heterosis but also to hybrid seed production. c) Explore new germplasms such as japonica male sterile lines with dominant semi-dwarf genes and transgenic herbicide-resistant japonica restorer and enhance the use of them.
出处
《杂交水稻》
CSCD
北大核心
2001年第2期1-4,共4页
Hybrid Rice
基金
辽宁省自然科学基金项目!(9810 10 0 1)
国家"九五"地方联合攻关项目!(96D0 18)
关键词
杂交粳稻
育种
杂种优势
理想株型
种质资源
japonica hybrid rice
breeding
heterosis
ideal plant type
new germplasms
