水稻质核互作雄性不育系异交结实率的初步研究  

Preliminary Studies on Outcrossing Rate in Rice CMS Lines

作　　者：邱振国[1,2] 陈雄辉[2] 王鹏[2] 彭海峰[3] 万邦惠[2] 

机构地区：[1]仲恺农业工程学院计算机科学与工程学院,广东广州510225 [2]华南农业大学农学院,广东广州510642 [3]华南农业大学生命科学学院,广东广州510642

出　　处：《江西农业大学学报》2012年第1期5-9,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家自然科学基金资助项目(31171612);广东省自然科学基金资助项目(010280)

摘　　要：为了研究水稻质核互作雄性不育系异交结实率与父母本的关系,以花籼A(野败胞质)、华农A(野败胞质)、华农A(夜公胞质)、华农A(饶平野稻胞质)共4个水稻质核互作雄性不育系为母本,以抗草种、T180、G72、金华占2号、华航1号、粤香占、HN5413、丰穗占、M22和M31共10个恢复系进行配组,结果表明:不同质核互作雄性不育系异交结实率存在显著的差异;不同恢复系间的异交结实率也存在显著差异;不育系和恢复系互作效应对异交结实率的影响不明显;同质异核不育系的异交结实率的差异达到显著水平,而同核异质不育系的异交结实率的差异不显著。这说明水稻质核互作雄性不育系异交结实率的差异主要受核内遗传物质的影响,细胞质对异交结实率的影响不明显。进而提出了在选育水稻质核互作雄性不育系时,不仅要注意优良异交开花习性,而且还要注意核内遗传物质对异交结实率的影响。Four CMS lines , as female parents and ten restorer lines were crossed for studing the outcross- ing rate. The results of variance analysis suggested that, significant diffence of the outcrossing rate was found among CMS lines in rice;the same result was also found among different restorer lines; however,interaction between CMS lines and restorer lines was not obvious. Compared with the outcrossing rate of the isocytoplasm- allonuclear CMS lines and that of the isonucleus-allocytoplasmic CMS lines, the results showed that the out- crossing rate was majorly determined by genetical matter of nuclear , not that of the cytoplasm. The results of the outcrossing rate of CMS lines in rice showed that choosing excellent blooming trains was important, more over, the genetical matter＇ s effects on the outcrossing rate should be cared in rice breeding.

关 键 词：水稻 质核互作雄性不育系 异交结实率 

分 类 号：S511[农业科学—作物学]