【作者】 阚贵珍； 邓德祥； 蒋守华；

【Author】 KAN Guizhen~(1,2);DENG Dexiang~1;JIANG Shouhua~1 ( ~1Agricultural Insititute Yang zhou University, Yang zhou 225009, ~2Nanjing Agricultural University, Soybean Research Institute, National Center for Soybean Improvement, and National Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing, 210095, China;)

【机构】 扬州大学农学院；

【摘要】 本研究以对玉米纹枯病抗性不同的5个自交系RA、B77、U8112、黄早4、双二黄以及双列杂交得到的六个后代群体为试验材料,在田间进行纹枯病菌接种,根据接种后的发病级数,研究其纹枯病抗性遗传规律。结果表明:在玉米的基因库中存在着纹枯病的抗性基因:不同玉米组合的纹枯病抗性遗传规律不一样,抗性的遗传受主基因和多基因共同作用,即是质量-数量遗传,主基因对数最多是2:玉米对纹枯病的抗性也在一定程度上受细胞质效应影响;。更多还原

【Abstract】 This experiment uses 6 generations as its materials which are from complete diallel cross of 5 corn inbred lines RA、B77、U8112、Huang zao 4、Shuang er huang whose resistance to sheath blight is different. Inoculate by sheath blight in the field, get the grade of disorder after inoculation, and study the regulation of inheritance of resistance to corn sheath blight. Main results are summarized as follows: It exists genes which can resist sheath blight in corn gene too; inheritance of resistance to corn sheath blight is controlled by major gene and polygene together, namely is qualitative-quantitative trait inheritance, the most pairs of major gene is 2.Different combinations have different regulation of inheritance of resistance to corn sheath blight, some combinations may be suffered by the cytoplasm effect.更多还原