【摘要】 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。更多还原

【Abstract】 Silver-leaves disease of apple was new to China. This disease also infecied apricot,almond, poplar, willow, peach, berry and siberian erabapple, etc. Symptoms usually appeared on leaves, fruits, branches, stems and roots. The characteristic symptoms were the silver-like glaze of disease Icaves which mignt be caused by a toxic substance. The produced by the pathogenic fungus.The pathogen was determined to be Stereum purpureum (Pers.)Fr. which can produce a larger amount of basidiocarp and basidiospore in late-July in Kamushi area, Heilongjiang province. Spores were measured 5.4-7.2×2.9-3.6μ the average 6.8×3.2μ. The size of spores usually varies with different hosts.更多还原