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应用生态学报 ›› 1999, Vol. 10 ›› Issue (6): 683-688.

• 研究论文 • 上一篇    下一篇

基因型×环境互作效应对水稻穗部性状杂种优势的影响

梁康迳   

  1. 福建农业大学作物科学学院, 福州350002
  • 收稿日期:1999-07-12 修回日期:1999-10-15 出版日期:1999-11-25 发布日期:1999-11-25
  • 作者简介:梁康迳,男,1954年出生,副研究员,长期从事水稻杂种优势利用,遗传生态学研究,已发表论文30多篇.
  • 基金资助:

    农业部中华农业科教基金;福建省教委科技资助项目(K99161).

Interactive effect of genotype and environment on heterosis of panicle traits of rice (Oryza sativa)

Liang Kangjing   

  1. College of Crop Science, Fujian Agricultural University, Fuzhou, 350002
  • Received:1999-07-12 Revised:1999-10-15 Online:1999-11-25 Published:1999-11-25

摘要: 采用包括基因型×环境互作效应的加性显性加性×加性上位性遗传模型,分析了籼粳杂交穗部性状杂种优势的两年资料。结果表明,7个穗部性状的杂种优势既由基因型控制也受环境(年份)互作效应影响。主穗粒数、主穗长、一次和二次枝梗总长和着粒密度表现较强的正向群体平均优势,而一次和二次枝梗数则表现显着的负向优势。基因型×环境互作预测结果表明,主穗粒数、主穗长、一次枝梗总长在两年中的环境互作表现正效应,一次和二次枝梗数则为负效应,着粒密度和二次枝梗总长表现不同方向的效应。利用IR66158-37(P1)、IR65600-85(P2)、明恢63(P4)和R669(P6)进行杂交配组,其杂种后代易获得重穗型的穗部结构,可在超高产育种中加以利用。

关键词: 水稻, 穗部性状, 杂种优势, 基因型×, 环境互作, 加性×, 加性上位性

Abstract: Based on two years experiment data, and using the models of genetic effects and genotype×environment (GE) interaction for additive dominant additive×additive epistasis, this paper analysed the heterosis of panicle traits of rice (Oryza sativa). The results indicated that the heterosis of seven panicle traits was affected by both genetic and environmental factors. Asignificantly positive heterosis over mid parents based on population mean (HMP) was observed in spikelet number of main panicle (SMP), main panicle length (MPL), total length of primary branches (TLPB), total length of secondary branches (TLSB) and spikelet density (SD), while the reverse was true in the case of the numbers of primary branches (PB) and secondary branches (SB). The predicated results of GEinteraction showed that its positive effect was observed in SMP, MPLand TLPB, negative effect was found in PBand SB, while different directional effect was detected in SDand TLSB. Aheavy panicle type structure could be easily obtained from hybrid progenies by using IR66158-37(P1), IR65600-85(P2), Minhui 63(P4) and R669(P6) as crossing parents, which could be used for the breeding of super high yielding varieties of rice.

Key words: Oryza stativa, Panicle traits, Heterosis, Genotype×environment interaction, Additive×additive epistasis