Achieving super high yield in rice by simultaneously increasing panicle number and grain weight via improving pre-heading biomass production

IF 1.6 4区农林科学 Q1 Agricultural and Biological Sciences Experimental Agriculture Pub Date : 2024-09-12 DOI:10.1017/s0014479724000140

Min Huang, Zhengwu Xiao, Shengliang Fang, Hengdong Zhang, Longsheng Liu, Fangbo Cao, Jiana Chen

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Abstract

Understanding the yield attributes of rice crops grown at super high-yielding sites is useful for identifying how to achieve super high yield in rice. In this study, field experiments were conducted in 2021 and 2022 to compare grain yield and yield attributes of ten high-yielding hybrid rice varieties between Xingyi (a super high-yielding site) and Hengyang (a site with typical yields). Results showed that Xingyi produced an average grain yield of 13.4 t ha−1 in 2021 and 14.0 t ha−1 in 2022, which were, respectively, 20% and 44% higher than those at Hengyang. Higher panicles per m2 and higher grain weight were responsible for the higher grain yield at Xingyi compared to Hengyang. The higher values of panicles per m2 and grain weight at Xingyi compared to Hengyang were due to greater source capacity resulting from improved pre-heading biomass production. This study suggests that simultaneously increasing panicle number and grain weight through improving pre-heading biomass production is a potential way to achieve super high yield in rice.

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通过改善发穗前生物量生产，同时增加粒数和粒重，实现水稻超高产

了解在超高产地区种植的水稻作物的产量属性有助于确定如何实现水稻的超高产。本研究在 2021 年和 2022 年进行了田间试验，比较了新沂（超高产区）和衡阳（典型高产区）10 个高产杂交水稻品种的粮食产量和产量属性。结果表明，新沂 2021 年和 2022 年的平均粮食产量分别为 13.4 吨/公顷和 14.0 吨/公顷，分别比衡阳高出 20% 和 44%。与衡阳相比，新沂的每平方米圆锥花序数较高，粒重也较高，这也是新沂粮食产量较高的原因。与衡阳相比，新沂的每平方米圆锥花序数和粒重较高，这是由于提高了发芽前的生物量生产，从而提高了源能力。这项研究表明，通过提高发芽前生物量生产同时增加圆锥花序数和粒重是实现水稻超高产的潜在途径。

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来源期刊

Experimental Agriculture 农林科学-农艺学

CiteScore

2.50

自引率

6.20%

发文量

审稿时长

24 months

期刊介绍： With a focus on the tropical and sub-tropical regions of the world, Experimental Agriculture publishes the results of original research on field, plantation and herbage crops grown for food or feed, or for industrial purposes, and on farming systems, including livestock and people. It reports experimental work designed to explain how crops respond to the environment in biological and physical terms, and on the social and economic issues that may influence the uptake of the results of research by policy makers and farmers, including the role of institutions and partnerships in delivering impact. The journal also publishes accounts and critical discussions of new quantitative and qualitative methods in agricultural and ecosystems research, and of contemporary issues arising in countries where agricultural production needs to develop rapidly. There is a regular book review section and occasional, often invited, reviews of research.