陇南地区是我国小麦条锈菌重要越夏区之一〔1〕,也是重要的常发易变区〔2、3、4,小种类型极其复杂。由于新小种的出现和积累,已使许多重要抗锈品种由这里开始丧失了抗锈性,如碧蚂一号、南大2419、甘肃96号、阿勃、阿桑、望麦15号、南召二号、尤皮Ⅱ号,天选15、17、阿奎雷、里勃留拉〔5〕等;以及近年的抗锈名牌品种76—85—2、77—69也都是首先在陇南丧失了抗锈性。伴随品种抗锈性的丧失,条锈病的许多生理小种最先在这一地区发现,近年条中29号小种的出现和急骤上升,也引起了有关专家、学者、种子主管部门的高度重视。中国种子总站于1988年针对北方麦区雨量较多的重要发病条件,预测有可能1989年 Longnan region is one of the important wheat stripe rust over the summer [1], is also an important common variable area [2, 3, 4, racial species extremely complex. Due to the emergence and accumulation of new races, many important anti-rust varieties have begun to lose their rust resistance from here, such as Bi-a, Nanda 2419, Gansu 96, Abe, Asang, Wangmai 15, No. 28, Youpi No. II, the day the election 15,17, Aquileia, Libellula 〔5〕, etc .; and in recent years, anti-rust brand 76-85-2,77-69 are also the first in Longnan lost Rust resistance. With the loss of varieties of rust resistance, stripe rust of many physiological races was first found in the region, in recent years, the emergence of the races 29 and sharp rise, but also caused the relevant experts, scholars, the competent authorities attach great importance to the seed . China Seed Terminal in 1988 for the northern wheat area more important rainfall conditions, the forecast is likely to 1989