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大豆轮纹病是大豆上的常见病害,在全国大豆产区均有分布,普遍发生,但在东北、华北地区发生较重,影响大豆产量和品质,造成大面积减产,带来严重经济损失。发病原因:引起大豆轮纹病的病原菌为半知菌亚门真菌大豆壳二孢,其褐色分生孢子器球形或扁球形,初生在叶表皮组织中,后突破表皮外露生长,散生或聚生,器壁膜质,产生的无色、圆柱形分生孢子(图1),多数正直,两端呈钝圆形,中间隔膜处或稍有缢缩。
Soybean ring disease is a common disease in soybeans. It is widely distributed in soybean producing areas throughout the country. However, heavy soybeans occur in northeastern and northern China, affecting soybean yield and quality, resulting in large-scale yield reduction and serious economic losses. The cause of the disease: The pathogen causing soybean ring disease is the half-know-bacteria subfamily soybean shell conidia, the brown conidia spherical or oblate, primary in the leaf epidermal tissue, after breaking the epidermal exposed growth, loose or poly Health, wall membrane quality, resulting in colorless, cylindrical conidia (Figure 1), the majority of integrity, blunt round at both ends, the middle of the diaphragm or slightly reduced.