小粒野生稻型细胞质雄性不育系的创建及其恢保关系鉴定  

BREEDING OF CYTOPLASMIC MALE STERILE LINE DERIVED FROM ORYZA MINUTA PRESL. AND IDENTIFICATION OF ITS RESTORING AND MAINTAINING RELATIONSHIP

作　　者：郑卓[1] 孙惠敏 王安萍[1] 胡雪华[1] 柳正葳[1] 刘科科[1] 许东风[1] 

机构地区：[1]井冈山大学生命科学学院,江西吉安343009 [2]江西省生物多样性与生态工程重点实验室博士后科研工作站,江西吉安343009

出　　处：《井冈山大学学报（自然科学版）》2015年第4期101-106,共6页Journal of Jinggangshan University (Natural Science)

基　　金：国家自然科学基金项目(31460340);江西省教育厅科技计划项目(GJJ1528);江西省教育厅科技落地计划项目(12033);江西省科技厅科技支撑计划项目(20112BBF60008)

摘　　要：小野1A是由小粒野生稻(Oryza minuta Presl.)中天然不育株与Y58S/内香B杂种后代优秀单株经多代回交转育而成。由于该雄性不育细胞质来自小粒野生稻,称为XY型雄性不育细胞质。恢保关系鉴定结果表明,XY型细胞质雄性不育系与野败型(WA)、印尼水田谷型(ID)、K型和红莲型(HL)细胞质雄性不育系的恢保关系不同,WA型、ID型、K型和HL型的保持系和恢复系中部分可以作为XY型雄性不育细胞质的保持系,部分可以作为XY型雄性不育细胞质的恢复系。XY型雄性不育细胞质突破了WA型、ID型、K型和HL型等雄性不育细胞质的恢保关系,扩大了保持系育种范围,可以用品质优良的栽培品种培育出高标准优质米不育系。由此可见,XY型雄性不育细胞质的发掘,不仅丰富了杂交稻细胞质遗传多样性,而且为培育高标准优质米不育系、进而实质性提高杂交稻稻米品质开辟了一条崭新的育种途径。Xiaoye 1A was obtained through nuclear substitution of the natural male sterile individuals from Oryza minuta Presl. with the nuclear of outstanding progenies of Y58S/ Neixiang B by backcrosses. Because of the male sterile cytoplasm derived fromOryza minuta Presl., it’s named as the XY type male sterile cytoplasm. The results showed that the male sterile line with XY cytoplasm was different from WA, ID, K and HL male sterile lines（table 2 and table 3） in the relationship between restorer lines and maintainer lines. Part restorer and maintainer lines of WA, ID, K and HL could be used as the maintainer lines of XY cytoplasmic sterile line, and parts of them could be used as its restorer lines. It was a newly found resource of rice male sterile cytoplasm. XYcytoplasm was free from the genetic confinement of the relationship between the restorer lines and maintainer lines of WA,ID, K and HL, enlarging the circle of maintainer lines so that good cultivated cultivars could be developed into fine male sterile lines. Therefore, the creation of the XY type sterile cytoplasm, not only enriches the genetic diversities of hybrid rice, but also opens up a new way to breed the high standard of fine quality male sterile lines, and substantially improve the grain quality of hybrid rice.

关 键 词：水稻 细胞质雄性不育 XY型细胞质雄性不育 恢保关系 

分 类 号：S511[农业科学—作物学] Q943.1[生物学—植物学]