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| 1 | Effects of Heat Stress at Vegetative and Reproductive Stages on Spikelet Fertility显示文摘Seed-setting rate, yield components and grain quality traits of 169 accessions from an exotic rice germplasm were tested under high temperatures from 40 oC to 45 oC for 6 h during the daytime at the vegetative and reproductive stages, respectively. The results showed that heat stress significantly decreased the seed-setting rate of all the accessions, but the heat stress effects varied among accessions. Based on the decreases in seed-setting rate at high temperatures, N22 was the most tolerant, followed by AUS17, M9962, SONALEE and AUS16. Moreover, the reductions in seed-setting rate and yield under heat stress were more serious at the vegetative stage(45 d before heading) than at the booting stage(15 d before heading). In addition, heat stress also affected grain quality, especially by conferring chalkiness to most of the accessions, but SONALEE did not change much. The heat-tolerant accessions identified here and the phenotype protocols developed could be used in future genetic studies and breeding programmes focused on heat tolerance. | Sulaiman CHEABU Peerapon MOUNG-NGAM Siwaret ARIKIT Apichart VANAVICHIT Chanate MALUMPONG | 2018 | Rice science2018，25，4： | 4 |
| 2 | Screening for Spikelet Fertility and Validation of Heat Tolerance in a Large Rice Mutant Population显示文摘A total of 10 000 M4 individuals in Jao Hom Nil (JHN) mutant population was treated with high temperature (40 ℃ to 45 ℃) during the day time (6 h) from the booting to the harvesting stages, and ambient temperature (33 ℃ to 35℃) was used as the control. The results of screening and yield trials found that the mutant line M9962 had a high spikelet fertility of 78% under heat stress. In addition, the other mutant lines, including M3181 and M7988, had a spikelet fertility of approximately 70%. However, the JHN wild type, Sin Lek, RD15 and RD33 had very low spikelet fertility of 34%, 14%, 9% and 4%, respectively. The lower spikelet fertility at an elevated temperature resulted in a dramatic decrease of filled grain and contributed to a loss in 100-grain weight. M9962 is a potential genetic stock for use in a heat tolerance breeding programme. In addition, spikelet fertility at high temperature was representative of heat tolerance and can be used as a screening trait for heat tolerance during the reproductive phase on a large scale. | Sulaiman CHEABU Nat PANICHAWONG Prisana RATTANAMETTA Boonthong WASURI Poonpipope KASEMSAP Siwaret ARIKIT Apichart VANAVICHIT Chanate MALUMPONG | 2019 | Rice science2019，26，4： | 3 |
| 3 | 水稻耐热性评价方法研究进展显示文摘在全球气候变暖的趋势下,高温热害现象已经成为制约水稻高产、稳产主要气象灾害之一。操作简单、使用方便、有效、可重复性好的水稻耐热性评价方法是开展水稻耐热种质资源筛选与创制、培育耐热水稻新品种、解析水稻耐热性状分子遗传机制的关键。介绍了水稻高温热害的形成机理、评价方法,以及前人在不同热处理条件下开展的水稻耐热性QTL研究,以期为开展水稻耐热性相关研究,解决气候变暖大趋势下水稻高温热害问题提供参考。 | 王伍梅 王辉 杜士云 | 2021 | 安徽农业科学2021，49，10： | 1 |
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