多子房性状应用于杂种小麦的研究Ⅱ.多子房小麦的杂种优势与利用  

Studies on the application of multi-ovary character to hybrid wheat Ⅱ.Heterosis and utilization of multi-ovary wheat

作　　者：马守才[1] 张改生[1] 刘宏伟[1] 王军卫[1] 

机构地区：[1]西北农林科技大学陕西省作物杂种优势研究与利用重点实验室,陕西杨陵712100

出　　处：《西北植物学报》2002年第6期1295-1299,共5页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金 ( 39970 4 54 ) ;"86 3"计划国家杨凌农业生物技术育种中心项目 ( B2 - 9) ;杨凌示范区专项基金资助项目

摘　　要：利用 3个多子房小麦与 8个普通小麦品种杂交后获得的 2 4个杂种及其相应的亲本材料 ,对多子房小麦的杂种优势与利用进行了研究。结果表明 ,F1 各性状的杂种优势依次为株高 >穗粒数 >单株产量 >千粒重。单株产量有较强的杂种优势 ,1 8个组合超双亲均值 ,平均增产 32 .71 % ;1 2个组合有超标正优势 ,幅度为 3.41～ 42 .84%。多子房小麦杂种优势的主要表现是穗粒数增多 ,其生产应用还应注意加强对多子房小麦其它农艺性状的改良。Using 24 F 1 hybrids derived from three multi ovary wheat(Mow) and 8 wheat,the heterosis and utilization of Mow was study.The results were as follows:The heterosis of plant height,kernels per head,grain weight per plant,1000 kernels weight decreased in this order.Hybrid of MOW had very high heterosis in the grain weight per plant,there is a 32.71% increase of yield as compared with the average of both parent in 18 crosses,among 12 crosses increased 3.41-42.84%.The heterosis mainly showed higher kernels per head ,the application of Multi ovary wheat should strengthen the improving of other agronomic characteristics

关 键 词：多子房性状 应用 杂种小麦 多子房小麦 杂种优势 利用 

分 类 号：S512.103[农业科学—作物学] S334.5