水稻冷害研究现状及育种策略分析

介绍了冷害对水稻生产的影响,并对低温冷害类型、耐冷鉴定评价方法和耐冷生理研究进行初步分析,着重阐明水稻耐冷性育种的策略,通过挖掘耐冷资源来提高水稻耐冷性。首先,采用对现有品种、品系进行系统的耐冷性评价,作为配制杂交组合依据;其次,积极引进其它地区优良耐冷资源,加以改造利用;第三,利用籼粳稻亚远缘杂交或地理远缘杂交,再通过复交或回交优化性状组配,聚合有利基因,创造新材料来提高品种的耐冷性。

Analysis on Research Status and Breeding Strategy of Rice Cold Damage

Based on effect of cold damage on rice,types of cold damage,identifying methods and physiologic studies of cold tolerance were analysed,it clarified the strategy of rice breeding on cold tolerance.Here are particular measures: first,use system for evaluating to prepare crosses;second,actively introducing and utilize fine varieties of cold tolerancen;third,research new material to improve cold damage.