生无性

6年生桉树无性系的生长和材性研究

Study on Growth and Wood Property of 6-year-old Eucalypt Clones

杉木无性系测定及速生优良无性系选择

Clone test and selection of fast growing superior clones of Chinese fir

对采用人工辅助授粉所得的麻竹种子，经无菌发芽增殖培养而成的实生苗无性系进行组织培养繁殖试验及生长观察。

Tissue culture trials of the seed clones obtained from artificial pollination of Dendrocalamus latiflorus were conducted .

本文综合研究了12年生杉木无性系试验林的生长性状、基本密度和管胞形态的遗传变异规律。

In this paper , 12 years old Chinese Fir clones were studied on the genetic variation of growth properties , basic density and tracheid morphological characteristics .

在西北部地区把它接在实生砧、无性砧及矮化砧上

In the Northwest , they are being planted by hedgrow on seedling roots , clonal and dwarfing stocks .

在西北部地区用灌木树篱把它接在实生砧、无性砧及矮化砧上

In the Northwest , they are being planted by hedgerow on seedling roots , clonal and dwarfing stocks .

马铃薯实生苗与无性一代单株块茎数的相关性研究

Correlation Study of Tuber Number per Plant between Seedling and The First Vegetative Generation of Potato

甘薯实生系与其无性系性状相关关系及早期选择利用研究

Studies on the Correlation of Seedling of Sweet Potato with Derived Clone in Characters and Its Early Selection and Use

在西北部地区用灌木树篱把它接在实生砧、无性砧及矮化砧上。樱桃砧木吉塞拉5号组培苗生根的试验研究

In the Northwest , they are being planted by hedgerow on seedling roots , clonal and dwarfing stocks . Study on Rooting of Tissue Cultured Seedlings in Cherry Rootstocks , Gisela No.5

从3年生27个无性系主要性状的分析与评价中得出：不同立地条件、不同无性系的年均生长量差异极为显著，两者之间也有极显著的交互作用。

From analysis and evaluation on major properties of 27 clones ( 3 years old ), it obtained that there were significant difference in mean annual growth under different site and different clone , and there were significant mutual effect between site and clone .

该文利用9个9年生三倍体毛白杨无性系木材试样，研究了木材气干密度组成及力学性质的遗传变异规律。

The wood samples of 9 triploid clones of Populus tomentosa Carr . taken from a 9 year old clonal test site were analyzed in order to investigate the genetic variation of wood properties , including air dried wood density and some mechanical properties .

对火炬松8～12年生的227个无性系的球果结实量，连续作了3年观察分析，结果表明，无性系间、年度间差异显著或极显著；

Two hundred and twenty seven 8 to 12 years old clones of loblolly pine were three years continuously for their cone yield . The results showed that there were significant differences between clones and between years at 5 % or 1 % level .

结果表明，四倍体盾叶薯蓣综合经济指数为20.35，其亲本的二倍体实生苗和二倍体无性繁殖苗的综合经济指数分别为33.45和7.38。

The results showed that : tetraploid Dioscorea Zingiberensis Wright is not worth growing due to its low integral economic trait exponent 20.35 compared with the integral economic trait exponent 33.45 of its parent 's diploid sexual seedlings , although tetraploid Dioscorea Zingiberensis Wright has several premium physiological characteristics .

对优良林草品种的选择和林草复合经营技术试验结果表明：引进的速生杨、速生柳各无性系间的扦插繁育和植苗造林成活率均不存在显著性差异；

Experimental results indicated that for the introduced fast-growing poplar and willow the cutting cultivating and the seedling planting of all clones had no significant difference in survival rate .