长雄野生稻红米基因的发掘定位研究  

Genetic Analysis and Molecular Mapping of Red Pericarp Gene in Oryza longistaminata

作　　者：刘仕琴[1] 周家武[2] 李静[2] 徐鹏[2] 邓先能[2] 胡凤益[2] 王荔[1] 陶大云[2] 

机构地区：[1]云南农业大学农学与生物技术学院,云南昆明650201 [2]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《云南农业大学学报（自然科学版）》2009年第3期336-339,共4页Journal of Yunnan Agricultural University:Natural Science

基　　金：云南省自然科学基金(2006C0063M,2006PG09);科技部“973”前期专项(2006CB708207)

摘　　要：红米由于积累在果皮层的红色色素而具有很高的食疗价值,这种色素又叫浓缩丹宁酸。红米在野生稻中是广泛存在的,本研究利用泰国优质籼稻RD23和长雄野生稻杂交,通过胚挽救技术获得F1,再用泰国优质籼稻RD23为轮回亲本与F1回交得到BC6F1群体,用于红米基因分子定位。利用已有的微卫星(SSR)标记将红米基因Rc定位于第七染色体RM3859和RM214之间,Rc与RM3859之间的遗传距离为1 cM,与RM214之间的遗传距离为2 cM,本研究结果为红米的遗传基因定位研究奠定了基础。Red pericarp in rice has some medical functions and very high nutritional value accumulated in the pericarp layer. And the ingredient of red pigments was condensed tannin or proanthocyanidin （PA）. In this study, BCrFl population derived from interspecific hybrid RD23/Oryza longistaminata and backcrossing to RD23 were utilized as recurrent parent to make molecular mapping of red pericarp gene introgressed from O. longistaminata. Red pericarp gene was mapped between RM3859 and RM214 on chromosome 7, located in the same region of Rc in Oryza rufipogon.

关 键 词：红米 基因定位 长雄野生稻 

分 类 号：S511[农业科学—作物学] Q949.2[生物学—植物学]