摘要
为了筛选寒地水稻耐冷资源,2004～2010年对349份水稻材料进行孕穗期耐冷性进行鉴定。结果表明:耐冷性达到1级水平的材料63份,耐冷性达到2级水平的材料180份,拓宽了水稻孕穗期耐冷抗源;以空育131作为耐冷标准品种进行材料的评价,连续7a,筛选出79份孕穗期耐冷性强于空育131的材料,其中与丰产性结合较好的材料15份,与优质性结合较好的材料8份,特种稻材料13份;水稻耐冷性田间鉴定结果直接受气候因素影响,以空育131为标准,划分试验材料对低温的敏感和钝感,其中钝感材料23份,敏感材料22份。
In order to select cold tolerance resources of rice,the evaluation on cold tolerance of 349rice materials at booting stage was conducted from 2004to 2010.The results showed that there were 63materials reaching the first grade cold tolerance and 180materials reaching the second grade cold tolerance,which broadening the cold tolerance source of rice at booting stage.Taking Kongyu 131as the cold tolerance standard variety for 7 consecutive years,79 materials were selected for better cold tolerance than Kongyu 131at booting stage,in which 15materials combined well with high yield,8materials combined well with high quality,and 13materials were special rice.The results of cold tolerance of rice in field identification were directly affected by climate factors,taking Kongyu 131as standard material,the test materials were divided into group of insensitive to low temperatare and group of sensitive to low temperature.
出处
《黑龙江农业科学》
2012年第10期1-7,42,共8页
Heilongjiang Agricultural Sciences
基金
"十一五"国家科技支撑计划资助项目(2011BAD35B02-01-01)
关键词
水稻
孕穗期
耐冷性
评价
标准品种
rice
booting stage
cold tolerance
evaluation
standard variety
