山东农业大学学报（自然科学版）2025，Vol.56Issue(1)：119-124,6.DOI:10.3969/j.issn.1000-2324.2025.01.013
灌浆结实期高温与干旱对水稻穗上不同部位结实特性的影响
High Temperature and Drought during Grain Filling Period on Seed Setting Characteristics of Different Rice Panicle Parts
佟卉 1许高平 1张融雪 1路信 1孙林静 1刘学军1
作者信息
摘要
Abstract
To investigate high temperature and drought on the seed setting characteristics of different parts of the rice panicle during the grain filling and filling period.In 2018,5 You 360(hybrid japonica rice)and Jin Dao 179(conventional japonica rice)were planted in pots.Four treatments were set during the heading stage:(1)Control,with temperature set the same as outdoor;(2)High temperature stress,the temperature was set at 37.5℃from 10:00 to 14:00 every day,and the others conditions were the same as the control;(3)Drought stress,the temperature setting was the same as the control,while maintaining soil water potential at(-30±5)kPa;(4)Combined high temperature and drought stress:conducting drought treatment simultaneously with high temperature treatment.Observe the effects of high temperature stress,drought stress,and combined high temperature and drought stress during the grain filling period on the seed setting characteristics of different parts of rice panicle.The results showed that high temperature,drought,and combined high temperature and drought stress all decreased the seed setting rate by increasing the percentage of empty and unfulfilled grains in the lower part of ear and the percentage of empty and blighted grains in the second and third grains of the primary and secondary branches.The combined high temperature and drought stress had the greatest effect on the seed setting rate.关键词
水稻/高温/干旱/空粒率/秕粒率Key words
Rice/high temperature/drought/empty grain rate/blighted grain rate分类
农业科技引用本文复制引用
佟卉,许高平,张融雪,路信,孙林静,刘学军..灌浆结实期高温与干旱对水稻穗上不同部位结实特性的影响[J].山东农业大学学报（自然科学版）,2025,56(1):119-124,6.
