高产、优质、多抗晚籼杂交稻新组合博优679选育与应用

用适应性强的本地(合浦)野生稻和IR 2061、IR 661等育种材料,通过单交、复交,多世代、多株系的系谱选育,选育成一系列优良株系。用博A等不育系对所选育出的优良株系进行测交,其中第679株系与博A配组最好,定名为博优679。该组合于2003年和2004年参加广西区试和生产试验,增产显著,米质优,抗性好;2005年1月通过广西农作物品种审定委员会审定,并被指定为广西主导品种之一,现正在广西、广东、海南等地大面积推广。

Development and application of new late-season Indica hybrid with high yield ,good quality and multiple resistances

Local(Hepu) wild rice with good adaptability and breeding materials IR2061,and IR611 were used to develop a series of elite lines by single crossing,multiple crossing,and thereafter by pedigree selection with many generations and many lines.A male sterile line Bo A was employed to testcross these elite lines,and one of these lines No.679 was the best in terms of its hybrid when crossed with the male sterile line Bo A,and this hybrid was named Boyou 679.This hybrid was evaluated in Guangxi new variety test and production test in 2003,2004 respectively.With the result of high yield,good quality,and good resistance capability,it was certified by Guangxi,and appointed to be one of the leading varieties in Guangxi in January 2005,and was being planted on a large scale in the Guangxi,Guangdong,and Hainan provinces.