【摘要】 六年的实践证明,在杂交育种的基础上,利用推广品种的丰产性,导入抗稻瘟病基因,采用花药培养技术,是一个快速有效的途径。现已育成“中花8号”,“中花9号”两个丰产、抗稻瘟病的优质新品种。报告指出,花粉植株的再杂交、再培养,逐步累加、聚合多种优良性状,较利用多种抗源的复合杂交法,规模小,速度快,选择效率高。通过花药培养,易激起小孢子隐性基因的暴露,可以早代选择与淘汰。更多还原

【Abstract】 It is a faster and available approach to introduce the resistant gene toblast disease into the commericial high yield varieties of rice by anther cu-lture,which is typically for its small hybrid population,high effectivenessof selection blast-resistant varieties in early generations.Breeding of high yield rice varieties with high blast resistance in therice growing region of North China is usually by backcross,which costs alot of time.However,by using anther culture,the resistant gene Pi-Z~t inToride No.2 has been successfully introduced into Zhonghua No.8 andZhonghua No.9 with high yield and good quality only for two years,while the development of Toride No.1 and Toride No.2 with Pi-Z~t genehad spent for 12 years by reciprocal backcross in Japan.Detail description ofthe anther culture method and its effectiveness are given in this paper.更多还原