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对我国近年来甘蔗育种常用亲本在不同植期与不同栽培条件下的黄叶综合症(YLS)发病情况进行调查研究。结果表明:不同品种之间的发病时间存在着明显差异,最大可相差到6个月,我国育成的品种发病时间普遍比美国引进品种晚。品种的种植和管理方式对甘蔗YLS的发生影响很大。同一品种的不同植期及同一品种的不同栽培方式对甘蔗黄叶病发病时间均存在着差异。同一品种的不同植期,宿根蔗YLS发病时间早于新植蔗的发病时间,最早可提前4个月感病。同一品种的不同栽培方式,大田栽培方式YLS发病时间也早于桶栽的栽培方式,最早可提前4个月感病。
In this paper, we investigated the incidence of yellow leaf syndrome (YLS), a common parent of sugar cane breeding in different planting and cultivation conditions in China in recent years. The results showed that there was a significant difference in the onset time between different varieties, with the maximum difference of 6 months. The incidence of the breeds developed in China was generally later than that of the introduced varieties in the United States. Varieties of planting and management of sugar cane YLS great impact. The same variety of different planting and the same variety of different cultivation methods of sugarcane leaf disease onset time there are differences. The same variety of different planting, stalks YLS onset time earlier than the onset of new sugarcane, the earliest 4 months early illness. The same variety of different cultivation methods, field cultivation methods YLS onset time is also earlier than the barrel cultivation methods, the earliest 4 months early illness.