黑龙江省香粳型水稻遗传背景分析

Genetic Background Analysis of Japonica Rice in Heilongjiang Province

为总结黑龙江省香粳型水稻的成功经验,并找出其中存在的主要问题,为今后香粳型水稻育种工作提供理论依据。通过追溯黑龙江省近5年来审定的香粳型水稻品种遗传系谱,结果表明:供试的水稻品种均有日本稻血缘,供试的水稻品种大多是以绥粳4号、五优稻1号为骨干亲本育成或衍生而来,由两大干系育成或衍生的香粳型水稻品种占黑龙江省近5年来审定的香粳型水稻品种的89.5%。黑龙江省香粳型水稻育种在选育第一、二积温带品种的同时,应注重第三、四积温带品种的选育。

To sum up the successful experience of japonica rice of Heilongjiang province,find out the main problems and provide theoretical basis for rice breeding work,the genetic lineages of japonica rice varieties was traced in past 5 years. The results showed that the tested rice varieties had Japanese consanguinity,most of whose were derived from Suijing 4 and Wuyoudao1,and the rice derived or bred by the two types accounted for 89.5% of japonica rice of Heilongjiang province in past 5 years. The breeding of japonica rice not only attached importance to the first and second accumulated temperature zones,but also paid a attention to the third and fourth accumulated temperature zones in Heilongjiang province.