sexual propagation

Study of Group Variation in Sexual Propagation of Tea Tree in Enshi of Hubei Province

湖北恩施地区茶树有性繁殖群体变异研究

Sexual Propagation of Phalaenopsis minor F.Y.Liu and its Life Cycle

小蝶兰的有性繁殖和生活周期

Methods To observe its seed germination , seedlings , sexual propagation , and prevention and cure of plant diseases and insect pests in the field .

方法观测种子发芽、出苗、有性繁殖及大田病虫害防治。

Bottleneck in sexual propagation appeared in the stage from seed to seedling , while clonal propagation appeared during the period from seedling to ramet .

黄牛奶树两种繁殖方式的瓶颈期不同，有性生殖的瓶颈期在种子到幼苗阶段，而克隆苗在幼苗到成株阶段。

The group variation in sexual propagation of tea tree in Enshi of Hubei province was studied through survey and analysis on the varied individual within the sexual propagated group .

调查湖北省恩施地区茶树有性群体中的变异单株，对各样株的定型叶及嫩梢共17个性状作了观察和测量；

The sexual propagation of Adenophora tetraphylla is dominantly xenogamous . The seed setting ratio of its autogamy is about 1.2 % .

轮叶沙参的有性繁殖主要依靠异花授粉，其自花授粉的结实率为1.2%。

In order to exploit the medical and ornamental values of Dryopteris crassirhizoma Nakai , the artificial sexual propagation and rejuvenation were carried out and the quality and output of it were also improved .

为开发利用粗茎鳞毛蕨（DryopteriscrassirhizomaNakai）的药用和观赏价值、提高其质量和产量，对其进行了人工有性繁殖和复壮研究。

This experiments regard Welsh onion as experiment material , probe into the way to rapid propagation of virus-free seedlings which belong to sexual propagation plant and can spread virus by seeds , establish the seed-breeding system and provide the foundation of scientific theories and the key technology .

本试验以大葱为试材，探讨有性繁殖植物种传病毒的脱毒种苗速繁途径，建立良繁体系，为种传病毒植物工厂化生产无毒种苗提供科学理论依据和关键技术。

The key to speeding up larch species improvement is combining sexual propagation with asexual one , establishing the rotative cuttings orchard and spreading the elite families and the second-generation single tree on a large scale by using softwood cuttings under full sunshine and automatic control of spraying .

有性繁殖与无性繁殖相结合，建立轮回采穗圃，用全光自控喷雾扦插技术，大规模推广优良家系和第2代优良单株，是加快落叶松树种改良进程的关键。