摘要
水稻每穗粒数是构成产量的关键因素,现代高产水稻品种多表现为穗大粒多。增加每穗粒数、促进大穗形成是提高水稻产量的重要途径。本文概述了水稻每穗粒数形成与幼穗发育的关系,并结合作者相关研究,从水稻穗型的遗传调控、营养状况与氮肥管理、水分、温光条件和内源激素等方面分析了其对每穗粒数形成的影响。从根系形态生理与幼穗发育、水肥管理和温光条件以及植物激素间的相互作用调节颖花分化与退化的生理和分子机制等方面提出了未来加强水稻大穗形成研究的重点,以期为大穗高产水稻品种选育和栽培调控提供依据。
The spikelet number per panicle is a key factor that constitutes the grain yield in rice.Modern high-yielding rice varieties mostly show high spikelet number per panicle.Increasing the spikelet number per panicle and promoting the formation of large panicles are important ways to improve rice yield.This paper reviewed the relationship between the formation of spikelet number per panicle and young panicle development in rice.Combined with the author’s related research,the mechanisms underlying genetic regulation in rice panicle size,the effects of nutritional status and nitrogen fertilizer management,water,temperature,light,and endogenous hormones on the formation of spikelet number per panicle in rice were reviewed.We put forward the future research focus on strengthening the formation of large panicles in rice from the aspects of root morphophysiology and young panicle development,water and nitrogen management,temperature and light conditions,and the physiological and molecular mechanisms of interaction between plant hormones regulating spikelet degeneration.The purpose of this study was to provide a basis for the selection and cultivation of high-yielding rice varieties with large panicles.
作者
刘立军
周沈琪
刘昆
张伟杨
杨建昌
LIU Li-Jun;ZHOU Shen-Qi;LIU Kun;ZHANG Wei-Yang;YANG Jian-Chang(Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Co-Innovation Centre for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Key Laboratory of Arable Land Quality Monitoring and Evaluation,Ministry of Agriculture and Rural Affairs,Yangzhou University,Yangzhou 225009,Jiangsu,China)
出处
《作物学报》
CAS
CSCD
北大核心
2023年第3期585-596,共12页
Acta Agronomica Sinica
基金
国家自然科学基金项目(32071947,31871557)资助。
关键词
水稻
大穗
颖花分化与退化
水肥管理
激素
rice
large panicle
spikelet differentiation and degeneration
water and nutrient management
hormone
