水稻不同生长时期耐寒性鉴定  

Identification of Rice Cold Tolerance at Different Growth Stages

作　　者：刘静妍 苏京平[1] 闫双勇 李军玲[1] 孙玥[1] LIU Jingyan;SU Jingping;YAN Shuangyong;LI Junling;SUN Yue(Tianjin Crop Research Institute,Tianjin Key Laboratory of Crop Genetics and Breeding,Tianjin 300384,China)

机构地区：[1]天津市农作物研究所,天津市农作物遗传育种重点实验室,天津300384

出　　处：《山西农业科学》2021年第10期1158-1161,共4页Journal of Shanxi Agricultural Sciences

基　　金：天津市自然科学基金面上项目(19JCYBJC29500);天津市农业科学院青年科研人员创新研究与实验项目(2019001);国家体系天津试验站(CARS-01-49)。

摘　　要：为探究低温寒害对水稻不同生长时期(萌发期、芽期及苗期)植株生长的影响,以包括东北主栽品种龙粳31在内的5个水稻品种及2个自育水稻品系为试验材料,通过低温发芽率、芽期及苗期的低温存活率于实验室进行耐寒性鉴定,并于佳木斯进行3个播期的田间出苗耐寒试验,统计播种后21、28、35 d的出苗率。结果表明,与对照品种龙粳31相比,丽粳10号、兴国、紧码京租、牡丹江3号及bd02在萌发期均具有更高的耐寒性;丽粳10号、bd02、兴国及牡丹江3号在芽期均具有更高的耐寒性;而苗期耐寒性方面,bd02优于龙粳31。综合3个指标分析,bd02在萌发期、芽期及苗期的耐寒性均优于龙粳31。田间试验结果显示,bd02的出苗率显著高于龙粳31。综合实验室及田间结果,bd02在萌发期、芽期及苗期的耐寒性均优于龙粳31,bd01在萌发期和芽期对低温敏感,丽粳10号在苗期对低温敏感。To explore the effects of low temperature cold injury on plant growth in different growth stages(germination stage,bud stage and seedling stage)of rice,five rice varieties including northeast main variety Longjing 31 and two self bred rice lines were used as experimental materials to identify the cold tolerance through low temperature germination rate,low temperature survival rate in bud stage and seedling stage.The cold tolerance experiment of field emergence was carried out in Jiamusi at three sowing dates,and the emergence rates at 21,28,35 d after sowing were counted.The results showed that compared with Longjing 31,Lijing 10,Xingguo,Jinmajingzu,Mudanjiang 3 and bd02 had higher cold tolerance at germination stage.Lijing 10,bd02,Xingguo and Mudanjiang 3 had higher cold tolerance at bud stage,and bd02 was better than Longjing 31 at seedling stage.The results showed that bd02 was better than Longjing 31 in cold tolerance at germination stage,bud stage and seedling stage.The results of three sowing times showed that the emergence rate of bd02 was significantly higher than that of Longjing 31.Comprehensive laboratory and field results showed that bd02 was better than Longjing 31 in cold tolerance at germination stage,bud stage and seedling stage.bd01 was chilling sensitive at germination stage and bud stage,and Lijing 10 was chilling sensitive at seedling stage.

关 键 词：水稻 耐寒性鉴定 萌发期 芽期 苗期 

分 类 号：S511[农业科学—作物学] S332.5