籼型杂交稻光合特性的配合力分析
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国家863计划资助项目(2010AA101304);湖南农业大学作物学开放基金项目(ZWKF201310)


Analysis of combining ability of photosynthetic characteristics in indica hybrid rice
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The 863 Hi-tech Project of China(863 aa101304) and the Open Fund Projects of Crop science, Hunan Agricultural University of China (ZWKF201310).

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    摘要:

    以6个籼型杂交稻三系不育系和5个恢复系按不完全双列杂交设计配制的30个杂交稻组合及其亲本品种为材料,对其光合性状进行了测定和分析,结果表明:1)杂交稻组合的光合特性存在显著或极显著的组合间遗传差异,光合特性的遗传变异主要来自基因的非加性效应;2)胞间CO2浓度、蒸腾速率、叶绿素a、叶绿素b和类胡萝卜素含量受不育系的影响大于恢复系,而气孔导度、叶绿a+b含量受恢复系的影响大于不育系;3)杂交稻光合性状的广义遗传力均大于狭义遗传力,各性状主要受基因互作及环境的影响。狭义遗传力的大小依次为叶绿素b、叶绿素a+b、叶绿素a、气孔导度、胞间CO2浓度、类胡萝卜素和蒸腾速率,这些性状具有中等遗传力;4)9个光合性状杂交稻F1代表型值与父母本一般配合力效应值之和的相关系数均达极显著水平。因此,可以根据父母本一般配合力效应值之和来预测杂交稻组合光合性状的表现,有利于高效选育高光效杂种稻组合。

    Abstract:

    To verify the combining ability of photosynthetic characteristics of function leaves, thirty hybrid combinations were obtained from incomplete diallel cross between six sterile lines and five restorer lines of indica hybrid rice cultivars. The photosynthetic characteristics in hybrid combinations and their parents were measured and statistically analyzed. Result showed that there were significant genetic differences among hybrid rice combinations in photosynthetic characteristics. The genetic variations of photosynthetic characteristics mainly came from additive effect of genes. Intercellular CO2 concentration, transpiration rate, chlorophyll content (a & b) and carotenoid content were influenced greater by sterile lines than the restorer lines but stomatal conductance, chlorophyll content (a+b) were influenced greater by restorer lines than the sterile lines. The broad genetic heritability was greater than narrow genetic heritability in photosynthetic characteristics of indica hybrid rice combinations. Each trait was mainly affected by gene interactions as well as environmental factors. The nine phenotypic values of photosynthetic traits of indica hybrid rice combinations were highly correlated (p<0.01) with the sum of the general combining ability (GCA) of parents Thus, it is possible to predict the phenotypic values of photosynthetic traits in indica hybrid rice combinations according to the GCA of parents, which is helpful for efficiently breed higher photosynthetic efficiency indica hybrid rice combinations.

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刘红梅,周新跃,刘建丰,等.籼型杂交稻光合特性的配合力分析[J].植物遗传资源学报,2014,15(4):699-705.

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  • 收稿日期:2013-12-23
  • 最后修改日期:2014-02-26
  • 录用日期:2014-05-26
  • 在线发布日期: 2014-06-10
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