花生新品种中花4号的性状表现及其抗性遗传背景分析

花生新品种中花４号的全国区试及大面积示范结果表明：该品种具有较大的增产潜力，旱地亩产２５０公斤左右，水田覆膜３２０公斤以上，最高达４６１公斤，经稳产性测定，回归系数（ｂ）接近１．稳产性能好，适应性广，蛋白质含量３０％以上，油分含量５１％左右；中抗花生锈病和青枯病．适于我国江淮流域及南方花生产区种植，目前累计推广面积已达２３０余万亩．

PERFORMANCE OF ZHONGHUA NO. 4 AND GENETIC ANALYSIS FOR ITS RESISTANCE TO DISEASES

Through national varletal trials and production demonstration in various places in China, a newly-released groundnut cultivar-Zhonghua No. 4 was confirmed for its high yicld potential.On uplands,it could yieeld about 250 kg pods per Chinese mu, and yield 320kg/mu in peddy rice field by mulch cultivation in which a highest yield of 46lkg/mu was achieved. An analysis on its yield stability showed that its regression coefficient was about 1.0 which indicated a desirable stability with a wide adaptability. The seed protein content of Zhonghua No. 4 was over 30% while its oil content was about 51%. This cultivar was moderately-resistant to rust and bacterial wilt, and could grown in central and southern China. A total area of 2. 3 million mu was harvested with this cultivar.