论文部分内容阅读
苹果银叶病是我国的一种新发现的病害,除侵染苹果外,尚能侵染杏、李、杨、柳、桃、樱桃、梨、山荆子等。此病可在叶、果、枝、干、根等部位上产生不同的症状。最引人注目的病状是银灰色的银叶。产生这种银叶的原因,是病原菌产生的一种毒质的中毒反应。 病原菌为Stereum purpureum(Pers.)Fr.在黑龙江省佳木斯市每年7月下旬出现大量子实体,该菌产生担孢子能力非常强。孢子为5.4—7.2×2.9—3.6微米,平均为6.8×3.2微米。各种不同寄主所产生的孢子大小有一定差异。
Silver leaf disease of apple is a newly discovered disease in our country. In addition to the infection of apple, it still can infect apricot, plum, poplar, willow, peach, cherry, pear and shaddock. The disease can be in leaves, fruit, branches, stems, roots and other parts of the different symptoms. The most noticeable condition is silver gray silver leaf. The reason for this silver leaf is a poisoning reaction of pathogens. The pathogen is Stereum purpureum (Pers.) Fr. In Jiamusi, Heilongjiang Province, a large number of fruiting bodies emerge in late July every year. The bacteria produce very strong basidiospores. Spores were 5.4-7.2 x 2.9-3.6 microns with an average of 6.8 x 3.2 microns. There are some differences in spore sizes produced by various hosts.