籼型三系杂交水稻稻曲病抗性遗传研究
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:湖南省农业科学院科技创新项目(2011 hnnkycx26)


Studies on false smut resistance genetic in three-line indica hybrid rice
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    摘要:

    用抗稻曲病三系不育系与抗和感稻曲病的恢复系配组,研究杂交水稻抗稻曲病不育系的胞质效应和恢复系稻曲病抗性遗传。结果表明,杂交水稻抗稻曲病不育系无胞质效应,抗病不育系与感病恢复系所配组合的杂种一代均表现感病。杂种F1的稻曲病抗性主要受核基因控制,其遗传表达特征有:抗性显性、抗性不完全显性和抗性隐性三种类型,恢复抗性遗传为显性和不完全显性的频率占81.25%。F1稻曲病病穗穗率、病情指数、平均每穗病粒数和病穗最高病粒数与恢复系相对应的稻曲病病情指标极显著相关,相关系数(r)分别为0.898**、0.868**、0.901**和0.569**;杂种F1与恢复系之间的?稻曲病病情指标极显著相关。创制和筛选出HA188、HA197、HA198等抗稻曲病恢复系新种质。讨论了杂交稻稻曲病抗病育种。

    Abstract:

    By cross with sterile(A) with resistance to false smut and resistant or susceptible restorer(R),studied the cytoplasmic effects of resistance to false smut of sterile and genetic of false smut resistance of restorer. The results showed that: among the combinations of sterile (R)譺estorer (S), the F1 showed susceptible that A(R)識(S)→F1?S) and not show the cytoplasmic effect, controlled the resistance to false smut of F1 by the restorer and showed the 3 types of dominant, incomplete dominant and recessive of hybrids resistant genetic that RRR 、RRMR and RRS. Dominant, and incomplete dominant frequency accounted for 81.25%. Significantly correlated that the disease panicle rate, disease index ,per panicle disease grains and highest disease grains of the diseasepanicle of F1 with restorer that’s. The correlation coefficient r=0.898**,r=0.868**,r=0.901**,r=0.569**.Hybrid F? and restorer between false smut condition indicators significantly correlated. HA188, HA197, HA198 and R288xuan Etc. the restore new germplasm with resistance to false smut has been breeding and screening. Discussed the hybrid breeding for resistance to false smut .

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李友荣,唐善军,高杜娟,等.籼型三系杂交水稻稻曲病抗性遗传研究[J].植物遗传资源学报,2013,14(5):784-787.

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  • 收稿日期:2013-01-17
  • 最后修改日期:2013-05-12
  • 录用日期:2013-07-09
  • 在线发布日期: 2013-08-08
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