小麦对锈病小种专化的抗性迅速丧失,促使人们注意寻找更为稳定的抗锈类型,慢锈性即其中之一。慢锈性小麦可以抑制病原的繁殖和扩展,表现为侵染率较低,潜育期较长,孢子堆较小,产孢量较少等。在河南以郑州地区为代表,小麦叶锈的发病高峰一般在5月中旬,距收获仅半月左右,若能利用慢叶锈性品种将发病高峰适当推迟,便会减轻损失。基于以上考虑,我们开始探索小 The rapid loss of wheat resistance to the races of small races prompted people to look for a more stable type of rust, one of which is slow rust. Slow-rust wheat can inhibit the propagation and expansion of pathogens, which is characterized by lower infection rate, longer incubation period, smaller spore piles and less sporulation. In Zhengzhou, Henan Province as the representative of the incidence of wheat leaf rust peak in mid-May, only about a half from the harvest, if the use of slow-leaf rust varieties will peak incidence of appropriate delay, it will reduce the loss. Based on the above considerations, we started to explore the small