新审杂交水稻品种耐热性评价

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摘要 在定量高温和自然常温条件下以耐热性品种N22为对照，研究了近年审定的适应四川生态区种植的35个杂交稻的耐热性。筛选出耐热品种9个，并通过耐热指数将35个杂交水稻品种分为耐热能力不同的4类，可为水稻生产布局提供科学依据。

关键词 杂交水稻;抽穗开花期;耐热性;耐热指数

中图分类号 S 511文献标识码 A文章编号 0517-6611（2022）02-0042-03

doi：10.3969/j.issn.0517-6611.2022.02.012

开放科学（资源服务）标识码（OSID）：

Evaluation of Heat Resistance of Newly Approved Hybrid Rice Varieties

LIU You-quan，WANG Wei （Sichuan Preschool Educators College，Mianyang，Sichuan 621000）

Abstract Under the conditions of quantitative high temperature and natural normal temperature，the heat resistant variety N22 was used as a control to study the heat resistance of 35 hybrid rices that were approved in recent years and adapted to planting in the Sichuan ecological region.9 heat resistant varieties were screened out，and 35 hybrid rice varieties were divided into 4 types with different heat-resistant abilities through the heat resistant index，which can provide a scientific basis for the layout of rice production.

Key words Hybrid rice;Flowering stage;Heat resistance;Heat resistance index

作者简介 刘友权（1972—），男，四川盐亭人，副教授，硕士，从事生物学教学研究工作。（剩余4490字）