论文部分内容阅读
在俄勒冈科瓦利斯国家级无性系种质库中,保存着1800多个稀有的梨树资源。本文描述其中23个梨树原始野生种及其1400多个稀有的栽培品种、砧术和选择类型。研究发现61%的梨树品种能感染普通的梨树病毒病。经测验,该种质库中有575个梨树无性系抗病毒病。通过温热处理和微型嫁接繁殖,已使288个原来带病毒的梨树无性系脱毒。现在,该种质库已能把这些无性系提供给研究人员和植物育种家作为试验材料。
More than 1,800 rare pear resources are preserved in the Corvallis National Clonal Bank in Oregon. This article describes 23 of the original wild species of pear and its more than 1,400 rare cultivars, anvils and selection types. The study found that 61% of pear species can infect ordinary pear virus disease. It has been tested that there are 575 pear clonal anti-viral diseases in this genebank. Thirty-eight previously infected pear-tree clones have been detoxified by warm treatment and micro-grafting. Now, the genebank has been able to make these clones available to researchers and plant breeders as test materials.