3个旱稻品种杂交配合力及其应用分析  

Research on combine ability and utilization of three upland rice

作　　者：王昌贵[1] 赵鹏珂[1] 冯小磊[1] 王向东[2] 宋倩[1] 王化琪[1] 

机构地区：[1]中国农业大学农学与生物技术学院/旱稻研究中心,北京100193 [2]唐山市农业科学研究院,河北唐山063001

出　　处：《中国农业大学学报》2010年第6期1-5,共5页Journal of China Agricultural University

基　　金：引进国际先进农业科学技术项目(948)重大专项(2006G51)

摘　　要：选用1个传统农家旱稻品种和2个改良旱稻品种与国内外7个水稻品种进行不完全双列组配,获得21个杂交组合,对旱稻品种9个性状的配合力和遗传参数进行了分析研究。结果表明:传统农家旱稻品种的各性状有很高的一般配合力,改良旱稻品种一般配合力较低;改良旱稻品种虽然部分结合了传统农家旱稻的抗旱性和水稻的丰产性,但是传统旱稻中仍然有许多优良的基因有待挖掘利用。特殊配合力分析表明4个组合单株产量特殊配合力正向效应显著,主要源于单株总谷粒数、单株总实粒数、单株结实率和单株有效穗数的特殊配合力的显著正向效应。各性状遗传力分析表明,主茎穗长、株高有较高的狭义遗传力,适于早代选择;单株总谷粒数、单株总实粒数、单株产量、单株结实率和单株有效穗数的特殊配合力方差所占群体总方差比例均大于70%,所以应该在较晚的世代加以选择。Three upland rice varieties,one traditional landrace（TL）and the other two modern varieties（MV）were tested with 7 abroad rice varieties in the design of uncomplete diallel crossing of NC Ⅱ method to study combining ability and its genetic parameters of 9 characters.The results shows that TL had higher general compatibility in most tested traits than MV.indicating that MV had partially combined the drought tolerance of upland rice and the high yield potential of lowland rice,TL has more excellent genes for us to utilize in the upland rice breeding program.4 crosses show Positive specific combining ability effect,it comes from Positive specific combining ability effect of Spikelet numbers per plant,filled grains per plant,seed set rate and productive panicles per plant.Main panicle and plant height should be selected in early generations because of its high narrow-sense heritability.And filled grain number per plant,spikelet number per plant,effective panicles per plant,grain weight and seed setting rate per plant should be selected in later generations regarding its low narrow-sense heritability.

关 键 词：旱稻 一般配合力 特殊配合力 杂种优势 

分 类 号：S511.6[农业科学—作物学]