Hostas , as important landscape plants used for ground cover in the forest , have been planted in europe and america countries for many years . being ornamental value of flowers and foliages , broadly adaptable and shade tolerance , hostas have been broadly applied for landscape use in china in recent years . based on systemically analysis of hosta germ plasm resource , cultivar resource , and the status of multipropagation technology and chimera researches , some investigation and experiments have been done in this article , including tissue culture , chimera characteristics , production and applying status of hostas in china 本文在较为全面、系统地分析玉簪属植物种质资源与品种资源、扩繁技术和嵌合体研究问题的基础上，以几种玉簪属植物和花叶玉簪的主要园艺品种为试材，进行了组织培养快繁的比较试验；并利用植物生理生化与形态解剖学手段，对性状稳定且具有推广价值的花叶玉簪品种h . ‘ sosweet ’进行了嵌合体特性的研究；本文还对玉簪属植物在国内的引种、生产和应用现状进行了调查、分析。
The typi ca1 symptom j s fold and b1 istering , even d istortj on , 1ops i ded j ] ] - - ] eaf , shorti ng p ] ant , there are motley with 1ight green and deep green , and some of the mot ] ey are ye1wt mm 1eave m tny : the i ] . 1 - - 1ed has arias mosai c , 1ops i ded , and the tissue of the i11 - - 1eaf has deteriorated exceeding1y , with s1ender pteridophyte 1 . eaves , i l1 p1ant is green - - yei 1ow , obvious1y shortened in joint , the who1e p1ant serious1y shortened and grows thickly 南瓜病毒病的典型症状为皱缩有疱斑、甚至扭曲，病叶畸形，植株矮化；花叶叶片上出现淡绿色和深绿色相间的斑驳，有的斑驳明显黄化；蕨叶丛枝型：病叶不但严重花叶、畸形，而且叶肉组织极度退化，纤细呈蕨叫叶状，病株黄绿色，节间明显缩短，整个植株严重矮化丛枝状。
