Virus-free seedling

Study on rapid propagation in vitro of sweet potato virus-free seedling

甘薯脱毒苗的离体快繁研究

Selection on Medium for Strawberry Virus-free Seedling Transplantation

草莓脱毒苗移栽基质的选择

Nutrient Content Change Effect on Virus-free Seedling of Potato in Vermiculite

蛭石中养分含量的变化对马铃薯脱毒苗生长的影响

Study on Cultivation Techniques for Virus-free Seedling of Sugarcane

甘蔗脱毒种苗培育技术研究

Comparing with the common seedling , the enzyme activity of the virus-free seedling which increase amplitude were various for the different cultivars .

不同品种苹果脱毒苗较相应的普通试管苗，酶活性增幅有很大差异。

Different density and different cuttage way of potato virus-free seedling effect growth of mini-potato in the culture base in the greenhouse .

温室基质栽培中，马铃薯脱毒苗不同密度、不同扦插方式影响着微型薯的形成。

Without effective chemical control and treatment measures , breeding virus-free seedling and drug-free cultivation are the most effective measure against apple virus diseases .

在尚无有效的药剂防治和治疗措施情况下，繁殖无病毒苗木、实施果园无毒化栽培是防治苹果病毒病的最有效措施。

Several factors which can effect on the propagation and rooting of virus-free seedling of Daphne odora vav .

研究了金边瑞香脱毒苗继代增殖与生根的若干影响因素。

The stem tip from germ-free stem segment of Rehmannia glutinosa cultured in test tube can be induced into virus-free seedling .

从地黄种茎育出的无菌幼苗上切取下的茎尖，用组织培养方法可诱导成去病毒幼苗。

Conclusion The result shows virus-free seedling rate of P. ternata is up to 80 % and the internal structure arrangement of virus-free leaves is in order and clear .

结论对半夏病毒病的脱毒率达到80%，脱毒植株叶片的内部结构排列有序、清晰可见。

The results show that : Success rate of virus-free seedling transplanted into Vermiculite was 98.33 % , plant height , root number , root length of the plants in Vermiculite than those in the other medium .

结果表明：以全蛭石为移栽基质的脱毒试管苗成活率可达98.33%，植株生产状态最优，平均株高、发根数、根长几项指标均高于其它移栽基质。

Study on the Way of Rapid and Low-expensive Producing Virus-free Potatoes seedling

马铃薯脱毒苗快速低耗生产技术研究

Adopting high efficiency and cost saving cultivation technologies , integrated pest and disease management , virus-free container seedling and developing of green food are ways to reduce cost and guarantee quality .

栽培管理技术方面一是采用高效节本栽培技术，二是提高病虫害防治水平，三是无毒化容器苗成片栽培，四是发展绿色食品，大力提高栽培管理水平。

Seed disinfection , producing virus-free tobacco seedling , colligated techniques of virosis prevention and cure at field growth stage , control of virosis by chemicals and developing Chinese traditional medicine preparation were applied in this investigation .

在种子消毒，培育无毒烟苗，大田配套防治技术，化学药剂防治和研制中草药制剂等方面，开展了烟草病毒病综合防治技术研究。

Advance of Virus Detection of Virus-Free Seed ( Seedling ) Potatoes

马铃薯脱毒种薯（苗）病毒检测技术研究进展