【作者】 任红茹； 荆培培； 胡宇翔； 陈雨霏； 陈梦云； 霍中洋；

【Author】 REN Hongru;JING Peipei;CHEN Yufei;HU Yuxiang;CHEN Mengyun;HUO Zhongyang;College of Agriculture,Yangzhou University/Innovation Center of Rice Cultivation Technology in Yangtze Valley,Ministry of Agriculture/Jiangsu Province Key Laboratory of Crop Genetics and Physiology;

【机构】 扬州大学江苏省作物遗传生理重点实验室/农业部长江流域稻作技术创新中心；

【摘要】 以粳稻品种南粳9108和籼稻品种扬两优6号为材料,于孕穗期在人工气候室内分别进行不同低温(13℃、15℃和17℃)及持续时间(3 d、5 d、7 d、9 d)处理,研究不同低温强度与持续天数对水稻生长及产量形成的影响。结果表明,孕穗期低温处理降低了水稻株高、穗长与节间长度,成熟期干物质量显著减少,籽粒空壳率增加,结实率、每穗实粒数减少,籽粒充实度和千粒重降低,产量显著下降。不同类型品种间,籼稻品种扬两优6号耐低温能力弱于粳稻品种南粳9108。更多还原

【Abstract】 In order to study the effects of different low temperature intensity(13℃,15℃ and 17℃) and different duration(3 days,5 days,7 days,9 days) at booting stage on growth and yield formation of rice,japonica rice Nangeng 9108 and indica rice Yangliangyou6 were planted in artificial chambers.The results showed that the low temperature at booting stage reduced the plant height,length of panicle and the internode length,significantly decreased the dry matter weight at maturity.The rate of shell was increased,the seed setting rate,grains per panicle,grain plumpness and 1000-grain weight were decreased,and the yield decreased significantly.Yangliangyou 6 is more sensitive to low temperature comparing with Nangeng 9108.更多还原