水稻耐低磷种质的初步筛选  

Preliminary Screening of Rice Germplasms for Tolerance to low-Phosphorous

作　　者：汤翠凤[1] 徐福荣[1] 余腾琼[1] 叶昌荣[1] 李贵勇[2] 周海 李俊 戴陆园[1] 

机构地区：[1]云南省农业科学院生物技术与种质资源研究所,昆明650205 [2]云南省农业科学院粮食作物研究所,昆明650205 [3]西双版纳州农业科学研究所,景洪666100

出　　处：《分子植物育种》2005年第5期711-715,共5页Molecular Plant Breeding

基　　金：农业部948“全球水稻分子育种计划”项目资助。

摘　　要：本文以农业部948项目“全球水稻分子育种计划”采用的151份国内外代表性种质为供体亲本、云南育成的优质高原粳稻品种滇粳优1号为轮回亲本、通过连续回交形成的5500个株行为材料,在田间自然缺磷条件下,以水稻植株分蘖数作为耐低磷评价指标,初步筛选出20个耐低磷基因型种质。The 151 rice germplasms collected through the project Global Rice Molecular Breeding were used as gene donor parents while Dianjingyou No.1 as recurrent parent and 5500 progenies of their backcross were used as materials tested in the screening experiments. Number of tillers was regarded as evaluation index in the field with low phosphorous. 20 rice germplasms were preliminarily screened out as low-phosphorous-tolerant resources. Such germplasms may be used for further studying in low- phosphorous stress and breeding.

关 键 词：水稻 耐低磷 种质 筛选 耐低磷基因型 水稻植株 轮回亲本 育种计划 粳稻品种 连续回交 

分 类 号：S511[农业科学—作物学]