开花期高温胁迫对不同水稻品种花粉萌发和结实的影响  

Effect of High Temperature on Pollen Germination and Seed Setting of Rice During Heading Period

作　　者：郭晶心[1] 曾文智[1] 周宝津[1] 卢浩荣[1] 陈庚平[1] 唐辉武[1] 周少川[2] 刘耀光[1] 

机构地区：[1]华南农业大学生命科学学院,广东广州510642 [2]广东省农业科学院水稻研究所,广东广州510640

出　　处：《华南农业大学学报》2010年第2期50-53,共4页Journal of South China Agricultural University

基　　金：国家自然科学基金(30671178);国家自然科学基金-广东联合基金(u0731007)

摘　　要：以5个籼稻品种为材料,通过抽穗期高温处理和离体花粉萌发等试验,研究了开花期高温对水稻花粉萌发和结实的影响.结果表明,不同品种水稻对高温处理的敏感度明显不同,其中品种黄华占在高温处理4 d后的花粉萌发率达到70%以上,在高温处理7 d后小穗结实率仍保持50%左右,其他4个品种的花粉萌发率和小穗结实率都明显低于黄华占,由此认为,黄华占是一个耐热性较强的品种.Effect of high temperature on pollen germination and seed setting of five rice cultivars during heading period was investigated. The results showed that the pollen germination rate of Huanghuazhan under high temperature for 4 d was above 70% ,and its seed setting rate under high temperature 7 d was about 50% ,while the other cultivars had lower pollen germination rates and seed setting rates. Therefore, Huanghuazhan is a heat-tolerant cultivar.

关 键 词：水稻 开花期 高温 耐热性 

分 类 号：S511[农业科学—作物学]