摘要
为提高假槟榔的人工种植技术,对其种子做了不同的化学催芽处理,以寻求种子的有效催芽方法,并对种子脱水耐性进行了探讨。结果表明:20%过氧化氢和98%浓硫酸浸泡5min,0.3%亚硝酸钠和0.2%硝酸钾溶液浸种24h后,发芽率显著升高,速度显著加快,尤以浓硫酸和硝酸钾处理效果为好;200～1000mg/L赤霉素和20～100mg/L激动素溶液浸泡24h也显著促进种子萌发,但催芽效果与溶液浓度有关。成熟种子轻度脱水,发芽率有所上升,但含水量下降至17%以下,发芽率急剧下降,当含水量下降10%以下,发芽力完全丧失。由此可见,种子很可能是中间型种子。
In order to improve the artificial planting technology of Archontophoenix alexandrae, different chemical treatments to accelerate seed germination were carried out to seek efficient methods of accelerating germination, the seed desiccation tolerance were also investigated in this study. The results showed that soaking in solutions of 20% H2O2 and 98% H2SO4 for 5 min,0. 3% NaNO2 and KNO3 for 24h all could improve germination percentage and velocity,especially in 98% H2SO4 and 0. 3% NaNO2 solution. Soaking in 200-1 000 mg/L GA and 20-100 mg/L KT solution for 24 h could also accelerate germination,but the efficiency of accelerating was related to the concentration of solutions. The germination percentage of mature seeds increaced slightly after slight desiccation,but decreased significantly when the seed moisture content reduced to below 17 % and then fully lost when below 10%, so the seeds tend to be intermediate.
出处
《广西植物》
CAS
CSCD
北大核心
2007年第6期913-917,共5页
Guihaia
基金
国家自然科学基金重点项目(30530160)
广东省自然科学基金(Z03088)~~
关键词
假槟榔
种子
催芽
脱水耐性
Archontophoenix alezandrae
seed
accelerating germination
desiccation tolerance
