大粒优质杂交水稻新品种天优1120的选育研究及启示

Breeding Research and Enlightenment of New Hybrid Rice Variety Tianyou 1120 with Big and Excellent Grains

江苏沿海地区农科所采用"籼掺粳恢恢交低世代测鉴"专利育种方法选育出大粒、高千粒重的籼型恢复系盐恢1120,再利用盐恢1120与优质三系不育系天丰A配组,育成了优质高产多抗三系杂交水稻新品种天优1120。该品种具有大粒优质(米质达国标三级优质米标准)、适口性好、高产稳产、增产潜力大、熟期适中、适应性广、抗病性强等特点。2008年通过江苏省农作物品种审定。本文介绍了该品种的选育过程、特征特性及其启示。

Agricultural Sciences Research Institute of Coastal Area in Jiangsu Province used the method ＂conducting hybridization between indica restoring lines and japonica restoring lines, testing and identifying in low generation＂ to successfully breed a new indica restoring line Yanhui 1120 with big grains and high kilo- grain weight. Then a new three- line hybrid rice variety Tianyou 1120 was bred through crossing between Yanhui 1120 and excellent three -line sterile line Tianfeng A. Tianyou 1120 has many advantages such as big and excellent grains, good dainty, high and stable yield, great production increase potential, moderate ripe time, broad adaptability, strong disease resistance and broad application prospects. It passed the examination of Jiangsu province in 2008. This article introduced the breeding course and characteristics of Tianyou 1120, and discussed some enlightenments .