Panicle emergence pattern and grain yield of rice plants in response to high temperature stress
Panicle emergence pattern and grain yield of rice plants in response to high temperature stress
复制标题
水稻响应高温胁迫的出穗规律及籽粒产量
DOI：
10.2480/agrmet.d-15-00008
复制
发表时间：
2015
影响因子：
1.3
通讯作者：
Y. Wakiyama
中科院分区：
文献类型：
--
作者：
A. Maruyama;T. Hamasaki;R. Sameshima;M. Nemoto;H. Ohno;K. Ozawa;Y. Wakiyama
水稻（Oryza sativa L.）是一个重要的特征。我们研究了生长季节温度升高对第一穗出现的影响，随后出现的穗数，并在水稻植株中使用温度梯度室（TGC）位于日本的一部分，湿润的亚热带气候的粮食产量。四个粳稻品种，越光，秋田小町，Hitomebore，和日本晴，暴露于不同的温度在TGCs。移栽至抽穗天数因温度不同而异。温度的升高既加速又推迟了抽穗的时间。极端温度（>40°C每日最高）增加DTH，而适度高温降低或不改变DTH。抽穗后温度升高影响穗数。越光和秋田町的最终穗数随温度的升高而增加。在这些品种中，小穗育性和早发穗的平均粒重较低，在较高的温度下，因为粮食不育的发生。而晚穗粒数和粒重在高温下较大，各处理间总产量差异不显著。我们的结论是，晚出穗补偿了水稻植株的产量，补偿了籽粒不育。
The timing of panicle emergence in rice (Oryza sativa L.) is an important trait. We studied the effects of increasing temperatures during growing seasons on the emergence of first panicle, consequent emerging panicle numbers, and grain yields in rice plant using temperature gradient chambers (TGCs) located in a part of Japan with a humid subtropical climate. Four japonica varieties, Koshihikari, Akitakomachi, Hitomebore, and Nipponbare, were exposed to different temperatures in the TGCs. The number of days from transplanting to heading (DTH) differed among temperatures. Increasing temperatures both accelerated and delayed the timing of heading. Extreme temperatures (>40°C daily maximum) increased the DTH, whereas moderately high temperatures decreased or did not change the DTH. Increasing temperatures after heading affected the number of panicles emerging. The final panicle number increased with temperature in Koshihikari and Akitakomachi. In these varieties, spikelet fertility and mean grain weight of early-emerging panicles were lower at higher temperatures because of the occurrence of grain sterility. However, the grain numbers and grain weights of lateemerging panicles were greater under higher temperatures, and total grain yields were not significantly different among the temperature treatments. We concluded that late-emerging panicles recouped the yield of rice plants, compensating for grain sterility.
凉爽气候下水温对水稻生长和产量影响的模拟：一、模型开发
DOI：
--
发表时间：
2007
期刊：
Agronomy Journal 99
影响因子：
--
作者：
Katou;Y.;Yamada;H.;Ikeda M.;Kobayashi;M.;佐藤明子;Shimono H.
通讯作者：
Shimono H.
影响因子：
4.2
作者：
Matsui, T;Omasa, K
通讯作者：
Omasa, K