高产杂交稻新组合Ⅱ优3003的选育与应用

Breeding and Utilization of New High-yield Hybrid Rice Combination II You3003

高产杂交稻新品种Ⅱ优3003,系四川省宜宾市农科所水稻研究室1999年用三系不育系Ⅱ-32A,与优质重穗型强恢复系宜恢3003组配而成。2002年参加四川中籼迟熟B组区试,平均产量8.49t/hm2,比对照汕优63增产5.91%,居试验第一位;2003年参加四川省中籼迟熟A1组区试,平均产量8.246t/hm2,比对照汕优63增产3.92%,同年参加四川省生产试验,平均产量8.664t/hm2,比对照汕优63增产9.31%。该组合有株型佳,分蘖力强,稳产丰产,优质抗病,适应性好等特点,适应中国南方稻区的平坝、丘陵区及汕优63种植的地方种植。

The new high yield hybrid rice verity Ⅱ-YOU3003 cultivated by rice lab of Yibin Agricuhurial Science Institute by using the varieties of Ⅱ-32A and 3003 in 1999. In the regional test in 2002 the average yield was in the first place, and kept winning better result comparing with the Shanyou-63 in many tests in the following year. The variety has the characteristics of good shape, stead yield, disease-resistant and strong adaptability, and is applicable for rice production area in south China.