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我省推广的大豆主要是农家良种,其中多数产量较高,但生育期偏长,影响后茬种小麦,还有一些品种不抗毒素病,易倒伏。为此,从1974年起,我们开展了夏大豆杂交育种,以期选出株型紧凑、抗倒、抗病、品质好,比当地推广种增产10％以上的早熟品种。一、选育经过 1974年选用28个早熟、高产和抗病的亲本配制组合,获得的一批种子,当年秋冬在温室中进行加代。早世代按照生育期100—110天、抗毒素病、抗倒伏的目标和组合产量(在一个组合内,各分离单株的群体产量)的高低,从中选拔了徐豆1号×六合青等4个
Soybeans promoted in our province are mainly farmland improved varieties, most of which are high-yielding ones. However, the longer the growth period is, the more affected the cropping of wheat. There are also some varieties that are not resistant to toxins and prone to lodging. To this end, since 1974, we carried out the summer soybean cross breeding, with a view to select the plant type compact, anti-down, disease resistance, good quality, more than the local promotion of varieties of more than 10% of the precocious varieties. First, breeding After 1974, the selection of 28 early maturing, high yield and disease-resistant parents of the combination of preparation, access to a number of seeds, when the autumn and winter in the greenhouse plus. Early generation in accordance with the growth period of 100-110 days, antitoxin disease, lodging resistance and combined production (in a combination of individual plant population yield), from the selection of Xu beans 1 x Liuheqing 4