寒地早粳孕穗期抗冷性鉴定与筛选

通过2004~2010年对黑龙江省部分水稻品种孕穗期抗冷性鉴定,筛选出水稻孕穗期抗冷性1级材料63份,2级材料180份,其中与丰产性结合较好的材料20份,与抗病性结合较好的材料72份,与优质性结合较好的材料6份,特种稻材料23份,审定水稻品种17个,2008-2010年生产累计应用面积达到129.4万hm2,为生产应用提供了科学依据,为育种者提供耐寒抗源。

Identification and Selection on the Cold Resistance of Early Japonica Rice Varieties at their Booting Stage in Cold Region

By the identification on the cold resistance of some rice varieties at their booting stage in Heilongjiang Province during the period of 2004 and 2010,we selected 63 first-grade and 180 second-grade materials of rice cold resistance at their booting stage,in which 20 materials have a good combination with the yielding ability,72 materials combine with the disease resistance well,6 materials combine with the quality well.And there are 23 materials about the special rice.17 rice varieties have been examined and approved.From 2008 to 2010,amount areas of the rice varieties applied have accumulated to the total number of 1,294,000 hm2,and it has provided the scientific basis for the production application,and created the anti-cold rice resources for the plant breeder.