Meta-analysis of effects of drought on yield and differences in dry matter allocation of hybrid rice and inbred rice

MAO Zilin; Song Guoqing; MA Yunjing; NIU Xinze; CAO Cougui; Li Ping

doi:10.13300/j.cnki.hnlkxb.2025.01.001

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Meta-analysis of effects of drought on yield and differences in dry matter allocation of hybrid rice and inbred rice

Crop genetic improvement and cultivation | 更新时间：2026-11-05

- Meta-analysis of effects of drought on yield and differences in dry matter allocation of hybrid rice and inbred rice
- Journal of Huazhong Agricultural University Vol. 44, Issue 1, Pages: 1-14(2025)
- 作者机构：
  
  1.华中农业大学植物科学技术学院，武汉430070
  2.湖北省十堰市农业科学院，十堰 442000
- 作者简介：
- 基金信息：
- DOI：10.13300/j.cnki.hnlkxb.2025.01.001
  CLC： S511
- Received：28 March 2024，
  
  Published：15 January 2025
- 稿件说明：
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毛紫琳，宋国庆，马云静，等.杂交稻与常规稻产量受干旱影响的Meta分析及干物质分配差异［J］.华中农业大学学报，2025，44（1）：1‐14.

MAO Zilin,SONG Guoqing,MA Yunjing,et al.Meta-analysis of effects of drought on yield and differences in dry matter allocation of hybrid rice and inbred rice[J].Journal of Huazhong Agricultural University,2025,44(01):1-14.
毛紫琳，宋国庆，马云静，等.杂交稻与常规稻产量受干旱影响的Meta分析及干物质分配差异［J］.华中农业大学学报，2025，44（1）：1‐14. DOI： 10.13300/j.cnki.hnlkxb.2025.01.001.

MAO Zilin,SONG Guoqing,MA Yunjing,et al.Meta-analysis of effects of drought on yield and differences in dry matter allocation of hybrid rice and inbred rice[J].Journal of Huazhong Agricultural University,2025,44(01):1-14. DOI： 10.13300/j.cnki.hnlkxb.2025.01.001.

摘要

为探究干旱对杂交稻和常规稻干物质分配及产量的影响，通过Meta分析整合了1990-2020年中国境内干旱胁迫-水稻产量的文献结果，量化品种、干旱胁迫程度以及胁迫时期对水稻产量的影响，并于湖北省武汉市开展盆栽试验，以籼型杂交稻扬两优6号和汕优63、籼型常规稻黄华占和扬稻6号为试验材料，进一步研究干旱［土壤水势（-30±5） kPa］对抽穗开花期水稻的叶片与根系生理指标、干物质积累与分配的影响。Meta分析结果显示，干旱下水稻产量平均降幅为24.0%；与其他生育期相比，营养生长期干旱胁迫下水稻产量降幅最大，达24.4%；籼型杂交稻和籼型常规稻在干旱下的产量降幅分别为19.3%和13.8%，差异显著，表明常规稻在干旱下的产量相对稳定。武汉盆栽试验结果显示，干旱胁迫下水稻叶片水势和叶绿素含量、根系伤流速度、根系吸收面积与活跃吸收面积均显著下降，其中根系伤流速度的降幅最大，杂交稻与常规稻的降幅分别为94.29%和89.03%，而根系活力显著上升。干旱显著降低了水稻各部位干物质量，其中杂交稻叶片的可溶性糖含量与非结构性碳水化合物（non-structural carbohydrates，NSC）含量显著下降，降幅分别为37.73%和25.35%，常规稻叶片的可溶性糖含量与NSC显著上升，增幅分别为21.89%和10.49%。与杂交稻相比，干旱下常规稻的叶片与根系生理指标变幅更小，其叶、穗、根部的NSC含量积累较多，茎部的光合碳含量较高；常规稻的叶、穗、根在抽穗开花期积累的光合碳中NSC含量占比更大。因此，干旱下常规稻可能是通过积累较多的NSC来保证各器官能量代谢的稳定进行，从而维持较稳定的产量。

Abstract

Literature on drought stress and rice yield in China from 1990 to 2020 were integrated through Meta-analysis and the effects of rice varieties， the degree of drought stress， and the period of stress on yield were quantified to study the effects of drought on the allocation of dry matter and the yield of hybrid rice and inbred rice. The hybrid indica rice varieties including Yangliangyou 6 and Shanyou 63， the conventional indica rice varieties including Huanghuazhan and Yangdao 6 were used to conduct a pot experiment in Wuhan， Hubei Province， to further investigate the effects of drought （soil water potential -30 kPa±5 kPa） on the physiological indexes of leaves and roots， the accumulation and distribution of dry matter at the stages of heading and flowering in rice. The results of Meta-analysis showed that the average decrease in rice yield under drought was 24.0%. Compared with other stages of growth， the yield of rice decreased the most at the stage of vegetative growth under drought stress， reaching 24.4%. The significant difference in the decrease of yield between indica hybrid rice and indica inbred rice under drought stress was 19.3% and 13.8%， respectively， indicating that the yield of indica inbred rice is relatively stable under drought stress. The results of the pot experiment in Wuhan showed that the water potential and the content of chlorophyll in rice leaves， the injury velocity in roots， the absorption area of root， and the active absorption area all significantly decreased under drought stress. Among them， the injury velocity in roots decreased the most， with a decrease of 94.29% and 89.03% for hybrid rice and inbred l rice， respectively， while the vigor of root significantly increased. Drought significantly reduced the dry weight of all parts of rice， among which the content of soluble sugar and non-structural carbohydrate （NSC） in leaves of hybrid rice decreased significantly by 37.73% and 25.35%， respectively. The content of soluble sugar and NSC in leaves of inbred rice increased significantly by 21.89% and 10.49%， respectively. The physiological indexes in leaves and roots of inbred rice under drought had smaller variation compared with those of hybrid rice， and its leaves， spikes， and roots accumulated more content of NSC， and its stems had higher content of photosynthetic carbon. The proportion of the content of NSC in the photosynthetic carbon accumulated in the leaves， spikes， and roots of inbred rice at the stages of heading and flowering was higher. It is indicated that the inbred rice may maintain stable yield under drought by accumulating more NSC to ensure stable metabolism of energy in all organs.

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Effects of drought farming during rice season on annual yield and resource utilization efficiency of rice-wheat rotation system

Pathogen variation， resistance mining and intelligent control of soybean frogeye leaf spot

Related Author

MAO Zilin

Ma Yunjing

Peng Xiao

Zhao Ningjie

Meng Meng

Sun Jingguo

Chang Yifei

Qiao Baoming

Related Institution

Shiyan Academy of Agricultural Sciences， Shiyan 4420000

Enshi Zhou Branch Company of Hubei Tobacco Company

College of Resources and Environment，Huazhong Agricultural University

Hubei Province Institute of Tobacco Sciences

Hubei Provincial Key Laboratory of Germplasm Innovation and Quality Regulation for Special Economic Crops

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