杂交粳稻及其亲本抗倒伏性的相关分析  

Correlation of Lodging Resistance Traits in Japonica Hybrid Rice and Their Parents

作　　者：兰彩霞[1,2] 郭玉华[1] 赵鑫闻[1] 赵东霞[1] 雒鸫[1] 

机构地区：[1]沈阳农业大学,辽宁沈阳110161 [2]中国农业科学院,北京100081

出　　处：《华北农学报》2010年第2期178-181,共4页Acta Agriculturae Boreali-Sinica

基　　金：辽宁省北方粳稻育种重点实验室资助

摘　　要：对11个杂交粳稻组合与其相应的12个亲本在形态、物质生产和材料力学特性方面的性状指标与倒伏指数进行相关分析。结果表明:在杂交粳稻中,与倒伏指数达到显著正相关的形态性状指标为株高和倒二节长,而倒三叶基角和其张开角则与倒伏指数呈显著负相关。材料力学指标茎基弯折与倒伏指数达到极显著负相关。在亲本品种中,与倒伏指数相关性达到显著水平的形态指标是重心高度和倒二节长,茎基弯折与倒伏指数同样为显著负相关。因此,在杂交粳稻的抗倒伏选育过程中,应适当降低株高,选择较短的倒二节长,同时也应适当的增大对倒三叶基角和张开角的选择;而在亲本品种(常规稻)中,在缩短倒二节长的前提下,适当的降低重心高度,对选育具有抗倒伏特性水稻品种具有重要意义。We analysis the correlation of morphology, production of physical and mechanics of material with lodg- ing index in 11 hybrid Japonica rice and their parents. In hybrid Japonica rice, plant height and length of second stem section from top （LSSS） have a significant correlation with lodging index, basal angles of third leaf from top （ BATL）, stretch angles of third leaf from top（SATL）and break power of basal stem（BPBS） have a significant negative correla- tion with lodging index;In their parents,the height of the centre gravity（ HTCG） and LSSS have a significant correla- tion with lodging index,BPBS also has a significant negative correlation with lodging index. Therefore,we should pay attention to reduce plant height,short LSSS and propriety increase the BATL and SATL in hybrid Japonica rice breed- ing program on lodging resistance,whereas parent cuhivars besides select short LSSS,also should think much of low HTCG.

关 键 词：水稻 杂交粳稻 抗倒伏 倒伏指数 

分 类 号：S511.03[农业科学—作物学]