CAJ | 학술논문

以籼稻Ⅱ优7954(中等敏感)和Ⅱ优7号(耐高温)为材料采用人工气候箱在水稻抽穗开花期进行38℃高温处理,研究高温下颖花开放特性对受精率的影响。结果表明,高温下Ⅱ优7号与Ⅱ优7954花时较对照提前,Ⅱ优7号花时集中,而Ⅱ优7954花时分散；Ⅱ优7954处理温度与高温处理时间之间存在互作,随着高温处理时间延长受精率下降；高温处理时段和变温模式直接影响水稻的开花习性,对受精率的影响很大。
이선도Ⅱ우7954(중등민감)화Ⅱ우7호(내고온)위재료채용인공기후상재수도추수개화기진행38℃고온처리,연구고온하영화개방특성대수정솔적영향。결과표명,고온하Ⅱ우7호여Ⅱ우7954화시교대조제전,Ⅱ우7호화시집중,이Ⅱ우7954화시분산；Ⅱ우7954처리온도여고온처리시간지간존재호작,수착고온처리시간연장수정솔하강；고온처리시단화변온모식직접영향수도적개화습성,대수정솔적영향흔대。
Ⅱyou 7954(medium heat sensitive)and Ⅱyou 7(heat tolerant)were subjected to heat stress (nine days or three days,38℃)in phytotron at flowering stage to determine the influence of flowering characteristics on spikelet fertility under high temperature.The results showed that high temperature resulted in early flowering of Ⅱyou 7 andⅡyou 7954,and the former had obvious flowering peak,yet the latter had low or indistinct flowering peaks.There was obvious interaction between temperature and exposure duration for Ⅱ you 7954,and spikelet fertility reduced as thermal exposure prolonged.High temperature duration and temperature changing pattern,which had an effect on flowering habit in rice,affected spikelet fertility greatly.