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大豆孢囊线虫病从七十年代开始,对黑龙江省的大豆生产已经带来了危害。并且引起国家和各级研究单位的重视。特别是近些年来,商品农业走进市场,大豆面积逐年增加,重迎茬面积比例扩大,使得孢囊线虫病蔓延迅速、致使黑龙江省每年减产大豆约80亿公斤,造成直接损失128亿元左右。为此,选育早熟、中熟、晚熟高产且抗孢囊线虫病的系列品种,是解决孢囊线虫病区和连作面积较大地区的主要途径和当务之急。一、亲本来源和选育过程嫩丰14号是黑龙江省农科院齐市嫩江农科所以安70—4176为材料,应用系统选育方法育成。1981年由安70—4176中选择60个优良单株,1982年在发病条件下进行株系选择。1983—1984年进行抗性鉴定与比较。1985—1986年参加黑龙
Since the seventies, soybean cyst nematode disease has brought harm to soybean production in Heilongjiang Province. And it has drawn great attention from the research institutes at all levels. Especially in recent years, the entry of commodity agriculture into the market, the increase of soybean area year by year and the expansion of the area of re-stubble crop have led to the rapid spread of cyst nematode disease, resulting in about 8 billion kilograms of soybean production in Heilongjiang Province each year, causing direct losses of about 12.8 billion yuan . Therefore, the breeding of early maturing, medium maturity, late-maturing high yield and anti-cyst nematode disease varieties, is to solve cyst nematode disease area and even the larger area of the main ways and top priority. First, the parental origin and breeding process Nenfeng 14 is Heilongjiang Academy of Agricultural Sciences, Nenjiang City, so Nong’an 70-4176 as materials, application breeding methods bred. Sixty elite individuals were selected from Ann 70-4176 in 1981 and selected in 1982 under the prevailing conditions. 1983-1984 identification and comparison of resistance. 1985-1986 Participate in Black Dragon