中国水稻科学2017，Vol.31Issue(2)：166-174,9.DOI:10.16819/j.1001-7216.2017.6073
花后不同时段低温对籼粳杂交稻稻米品质性状的影响
Effect of Low Temperature After Flowering on Grain Quality ofindica-japonica Hybrid Rice
摘要
Abstract
[Objective] The temperature during grain-filling stage of rice is the primary ecologic factor to rice qualities. The research was conducted to reveal the effects of low post-anthesis temperature on rice quality and starch viscosity of Yongyou varietiesduring grain filling.[Method] Four varieties, twoindica-japonica hybrid rice (Yongyou538, YY538; Yongyou17,YY17) and twoindica rice (Zhongzheyou1, ZZY1) and japonica rice (Zhejing88, ZJ88), were chamber-cultured at temperature as low as 20℃ from 0 to 15 days after flowering(S1), 17℃ from 15 days to 30 days after flowering(S2) and 14℃ from 30 days after anthesis to maturity(S3) in a pot experiment.[Result] Low temperature after flowering significantly affected thehead rice rate, chalkiness, gel consistency, amylose content and protein content of rice, and decreased peak viscosity, hot paste viscosity, cold paste viscosity, breakdown value of Yongyou varieties, and increased setback and consistency. Compared with CK treatment, S1 treatment had the greatest influence on rice processing quality, S2 and S3 treatments had the greatest influence on appearance quality, cooking and eating quality and nutritional quality. Moreover, YY17 is more sensitive to low temperature than YY538. Overall, low temperature after flowering exerted significant impact on grain quality, which varied with genotype, rice quality index and treatment time.[Conclusion] The present study indicated that given rice quality indexes differed amony varieties in rice production, we should adopt corresponding measures for high rice quality in grain-filling so as to give the quality potential ofindica-japonica hybrid rice into full play.关键词
籼粳杂交稻/灌浆结实期/不同低温/稻米品质/淀粉黏滞性谱Key words
indica-japonica hybrid rice/grain-filling stage/low temperature/grain quality/starch viscosity分类
农业科技引用本文复制引用
曾研华,张玉屏,潘晓华,朱德峰,向镜,陈惠哲,张义凯,曾勇军..花后不同时段低温对籼粳杂交稻稻米品质性状的影响[J].中国水稻科学,2017,31(2):166-174,9.基金项目
国家现代农业技术体系建设专项(CARS-01-09B) （CARS-01-09B）
浙江省自然科学基金资助项目(Y13C130013) （Y13C130013）
江西省科技支撑计划资助项目(20123BBF60167) （20123BBF60167）
江西省自然科学基金资助项目(20161BAB214171) （20161BAB214171）
江西省教育厅项目(GJJ150380) （GJJ150380）
江西农业大学博士启动费资助项目(9032305504). （9032305504）
