ZHAO Yajie,WEN Rui,JIA Yiming,et al.Research on Photosynthetic Characteristics and Yield-Related Traits of Parents and F2 Generation with Different Leaf Colors in Foxtail Millet[J].HEILONGJIANG AGRICULTURAL SCIENCES,2025,(12):30-36.[doi:10.11942/j.issn1002-2767.2025.12.0030]
谷子不同叶色亲本和F2光合特性及产量相关性状研究
- Title:
- Research on Photosynthetic Characteristics and Yield-Related Traits of Parents and F2 Generation with Different Leaf Colors in Foxtail Millet
- 文章编号:
- 4
- Keywords:
- foxtail millet; leaf color; photosynthetic characteristics; fluorescence parameters; yield
- 文献标志码:
- A
- 摘要:
- 为了探究不同叶色谷子的光合能力，促进高光效、高产量谷子新品种的培育,以黄绿色叶片的谷子品种金苗K1为母本，绿色叶片的豫谷18为父本，通过杂交获得F2分离群体，分析不同叶色谷子的叶绿素含量、光合特性及产量构成因子。结果表明，孕穗期绿色叶片的豫谷18和F2绿色叶片（F2L）的叶绿素含量（SPAD值）（49.2和44.7）显著高于黄绿色叶片的金苗K1和F2黄绿色叶片（F2H）（36.9和33.9）。在苗期和孕穗期，黄绿色叶片的净光合速率、蒸腾速率和气孔导度显著高于绿色叶片，但其光合效率较低，表现为光系统Ⅱ的最大光化学速率（Fv/Fm）较低。尽管黄绿色叶片的F2H在株高、穗长等农艺性状上表现较好，但其单穗重、单穗粒重和出谷率显著低于双亲。相关性分析显示，Fv/Fm与株高、穗长、穗粗、千粒重和出谷率呈正相关，表明光合效率对产量有重要影响。谷子叶色通过影响叶绿素积累与光系统Ⅱ功能，调控光合效率及生育期光合特性动态，进而影响产量形成。绿色叶片材料因较高的光合效率，在产量相关性状上表现更优。
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备注/Memo
收稿日期：2025-08-27