三无性

从无性系平均看，三无性系MFA的大小次序为366＜370＜I&69。

Of the three cottonwood clones , the order of MFA were : 366 < 370 < I-69 .

经446天继代培养后，在HC-0、HC-4和HC-5三个无性系再生植株中观察到广泛的形态变异，包括育性、株高、抽穗期、穗形和穗颈毛等。

Extensive somaclonal morphological variation was observed in regenerants of HC-4 , HC-5 and HC-0 lines after 446 days ' subculture . Variant characters included fertility , height , heading date , spike shape , hairy neck .

经各项指标的检验和综合评定认为，7号、3号、2号三个无性系作为主栽系，1号、6号两个无性系作为配栽系较为合适。

It is more suitable that the clones , No. 7 , 3 , and 2 , were used as major cultivated strains and the clones , No. 1 and 6 as associated cultivated strains , after examining and evaluating synthetically every index about them .

三种泡桐无性系木材材性及纤维形态的研究

Wood Properties and Fiber Morphology of Paulownia Hybrid Clones

3三种禾草无性系叶种群具有相同生长和发展规律。

The leaf population of the three grasses owns the same growth and development rule .

1三种禾草无性系扩展表现出相同规律，即以最大可能伸长主茎从而占据生态位空间。

Results showed that : 1 Three species of clone taken on the similar type of extending . The main stolon elongated as long as possible to occupied the ecological niche .

主要研究结果如下：（1）解决了三倍体毛白杨无性系鉴别技术问题。

The results show as follows : ( 1 ) Clone identification technique of Triploid Populus tomentosa was solved .

本文采用国家标准方法，通过测定和分析取自山东和廊坊两地的6个品系三倍体毛白杨无性系的化学组分，筛选出最适宜作为制浆造纸用材林的品系。

In this paper , six strains of triploid clones from Lang fang and Shandong were measured and analyzed by using the national standard method in order to select regional suitable strains .

运用双因素随机区组设计方案，研究了稀土、赤霉素（GA3）和吲哚丁酸（IBA）三种植物生长调节剂对三个锥栗品种无性系产量增加的影响。

The effect of GA 3 , IBA and rare earth elements on yield increase in 3 clones of Castanea henryi was studied , using double factor randomized block design .