抽穗开花期耐高温的爪哇稻资源筛选

通过人工气候室鉴定和分期播种试验，对来自于不同国家和地区的95份爪哇稻进行抽穗开花期耐高温特性评价。以综合结实率为指标，通过聚类分析将95份爪哇稻分为耐热能力不同的3类。综合考虑大田分期播种的结实率和人工气候室鉴定结果，筛选出耐高温品种IRAT109 (IRRI编号38563)、260（IRRI编号14888）和L 4-34（IRRI编号13403），它们可用于水稻耐高温新品种的选育及耐热性遗传研究。

Screening of javanica Rice for Thermo-tolerance at Heading Stage

Thermo-tolerance of 95 accessions of javanica rice, which originated from different countries and regions, was determined by high temperature stress in phytron and interval sowing in field. According to the comprehensive seed set, the 95 accessions of javanica rice were classified into 3 groups by thermo-tolerance based on clustering analysis. In consideration of comprehensive seed set and seed set of interval sowing in field, the variety of IRAT109 (IRRI accession number 38563), 260 (IRRI accession number 14888) and L 4-34 (IRRI accession number 13403) were of thermo-tolerance, which can be used for breeding new thermo-tolerant rice and genetic research of high temperature stress.