湖北农业科学2025，Vol.64Issue(8)：35-41,7.DOI:10.14088/j.cnki.issn0439-8114.2025.08.006
全生育期增温胁迫鉴定评价粳稻种质资源耐热性
Identification and evaluation of thermotolerance in japonica rice germplasm resources under whole growth period warming stress
摘要
Abstract
In order to explore the response of yield and appearance quality of Japonica rice germplasm resources to temperature in-crease and screen out thermotolerance germplasm resources of Japonica rice,365 core germplasms of Japonica rice from the research in the early stage were used as experimental materials,and the conventional field was used as the control.The artificial greenhouse was used to increase the temperature during the whole growth period,and the plant height,yield components and appearance quality traits of Japonica rice were measured.The results showed that,compared with the control,the growth and development process of Ja-ponica rice was accelerated,the growth period was significantly shortened,and the tiller number was significantly reduced under the whole growth period warming stress.At maturity,under the whole growth period warming stress,the effective panicle number,the pri-mary branch number,seed setting rate and thousand-grain weight decreased significantly or extremely significantly,the grain width and grain thickness increased,the length-width ratio decreased,and the grain was short and round.Compared with the control,the appearance quality deteriorated,the chalky rice rate and chalkiness degree increased significantly,and the grain transparency de-creased significantly under the whole growth period warming stress.In addition,it was also found that different yield factors had differ-ent responses to warming stress,and the thermotolerance of different Japonica rice varieties was also significantly different.Ten strong thermotolerance Japonica rice germplasms with excellent comprehensive traits were identified and screened by using the key thermotol-erance response indexes such as effective panicle number,seed setting rate,chalky rice rate and chalkiness degree,as well as the comprehensive heat tolerance coefficient.关键词
粳稻/种质资源/全生育期增温胁迫/产量/外观品质/耐热性Key words
japonicarice/germplasm resource/warming stress during whole growth period/yield/appearance quality/thermotolerance分类
农业科技引用本文复制引用
勒思,涂夯,胡佳晓,刘进,周慧颖,孟冰欣,余丽琴,黎毛毛..全生育期增温胁迫鉴定评价粳稻种质资源耐热性[J].湖北农业科学,2025,64(8):35-41,7.基金项目
江西省重大科技研发专项(20232ACF01001) （20232ACF01001）
国家重点研发计划资助项目(2021YFD1200500 （）
2021YFD1200501-7) （）
江西省自然科学基金项目(20232BAB205036) （20232BAB205036）
