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镇恢42是江苏丘陵地区镇江农业科学研究所用镇恢129作母本,镇恢084作父本通过杂交选育而成的含有广谱高抗白叶枯病基因Xa7及抗白叶枯病基因Xa4的籼型强优恢复系。该恢复系高抗白叶枯病,株型好,穗型大,配合力强,于2007年9月获国家品种保护,所配组合Ⅱ优42于2005年通过国家农作物品种审定委员会审定,2008年3月获国家品种保护。
Zhenxu 42 is a hybrid rice containing the broad-spectrum high-resistance bacterial leaf blight genes Xa7 and Bacterial blight resistance genes, which were obtained from Zhenhui 129 of Zhenjiang Agricultural Science Research Institute in Zhenjiang, a hilly area in Jiangsu Province. Xa4 indica strong restorer line. The restorer line is highly resistant to bacterial blight. Its plant type is good, its panicle type is large, and its co-locus is strong. It was protected by the national variety in September 2007, and its combination Ⅱ You 42 was approved by the State Crop Variety Approval Committee in 2005. In March of the national variety protection.