晚籼优质稻玉晚占的选育与应用

Breeding and application of an indica type quality late rice variety Yuwanzhan

玉晚占是玉林市农科所利用云国1号作母本,八桂香作父本进行有性杂交选育而成的晚籼中熟优质稻新品种,2005年1月通过广西农作物品种审定。该品种全生育期117d,株高107.8cm,千粒重21.7g。株型集散适中,茎秆粗壮,中抗白叶枯病,熟色好,米质优。育成至今已累计推广53.3hm2以上,平均单产6750kg/hm2左右。

Yuwanzhan is an indica type quality late rice variety with medium maturation, bred from hybridization of Yunguo No. 1 as female parent and Baguixiang as male parent by the Yunlin Institute of Agricultural Sciences, and was certified and registered by Guangxi Committer for Crop Variety Registration in Jan. 2001. It is characterized by 117 days of growth duration, 107.8 cm of plant height, 21.7 g of 1000-grain weight, good plant type, strong stem, intermediate resistance to rice bacterial leaf blight, good ripening colour change and excellent grain quality. The extension area of Yuwanzhan has been up to 53.3 hm^2 since it was bred, and the average of yield is about 6750 kg/hm^2.