杂交粳稻及其亲本抗倒伏性的相关分析

doi:10.7668/hbnxb.2010.02.036

摘要/Abstract

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。

关键词: 水稻, 杂交粳稻, 抗倒伏, 倒伏指数

Abstract: We analysis the correlation ofmorphology, p roduction of physical and mechanics ofmaterialwith lodg- ing index in 11 hybrid Japonica rice and their parents. In hybrid Japonica rice, p lant 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 p lant height, shortLSSS and p rop riety increase the BATL and SATL in hybrid Japonica rice breed- ing p rogram on lodging resistance,whereas parent cultivars besides select short LSSS, also should think much of low HTCG.

Key words: Rice, Hybrid Japonica, Lodging-resistance, Lodging index

中图分类号:

S511.03

兰彩霞, 郭玉华, 赵鑫闻, 赵东霞, 雒鸫. 杂交粳稻及其亲本抗倒伏性的相关分析[J]. 华北农学报, 2010, 25(2): 178-181. doi: 10.7668/hbnxb.2010.02.036.

LAN Cai-xia, GUO Yu-hua, ZHAO Xin-wen, ZHAO Dong-xia, LUO Dong. Correlation of Lodging Resistance Traits in Japonica Hybrid Rice and Their Parents[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(2): 178-181. doi: 10.7668/hbnxb.2010.02.036.

http://www.hbnxb.net/CN/Y2010/V25/I2/178

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