编号
zgly0000818193
文献类型
期刊论文
文献题名
Pre-sowing treatment for breaking dormancy in Acer velutinum Boiss. seed lots
作者
Mostafa
Farhadi
Mulualem
Tigabu
Alireza
Ghasemi
Arian
Mehdi
Sharifani
Abolfazl
Daneshvar
Per
Christer
Oden
作者单位
Swedish
University
of
Agricultural
Sciences
Education
Center
of
Jihad-Agriculture
Gorgan
University
of
Agricultural
Sciences
and
Natural
Resources
母体文献
林业研究: 英文版
年卷期
2013(2)
页码
273-278
年份
2013
分类号
S
关键词
cold-stratification
altitude
physiological
dormancy
velvet
maple
seed
germination
文摘内容
Acer velutinum Boiss is a valuable tree species native to Iran, and its seeds possess physiological dormancy that hampers seedling production in the nursery for large-scale reforestation efforts. The aim of this study was to determine the optimal dormancy breaking treatments for A. velutinum seeds. We conducted a factorial experiment involving six seed lots collected along an elevation gradient from 300 to 1800 m at 300 m interval and four cold-moist stratification periods (0, 4, 8 and 16 weeks) at 4℃ and 70% relative humidity. The result shows that the germination of cold-moist stratified seeds was significantly (p 〈 0.0001) higher than the control for all seed lots. The highest germination capacity was recorded after 16 weeks of cold-moist stratification for all seed lots (68% 88% depending on the seed lot) except those collected from mid altitude sites (600 and 900 m) that germinated equally well (≥ 75%) after 4and 8-week of clod-moist stratification compared to the other seed lots. The mean germination time was significantly shorter (12 to 19 days, depending on the seed lot) for seeds stratified for 16 weeks than for untreated seeds. It can be concluded that: (1) cold-moist stratification for 16 weeks is the best pre-sowing treatment for breaking dormancy in A. velutinum seeds; and (2) seeds should be collected from mid altitude sites (600 and 900 m) to get more than 80% germination within 15 days, and these seed lots even required shorter cold-moist stratification period(eight weeks) than other seed lots.