摘要
研究了聚乙烯醇(PVA)渗调处理烟草种子后种子活力及生理生化的变化,并筛选出PVA处理的最佳浓度和时间。结果表明,烟草种子经2％～6％的PVA渗调处理1～5d后,发芽率和种子活力均有所提高,出苗时间缩短,种子浸出液的相对电导率大幅度下降,过氧化物酶和酸性磷酸酯酶活性均显著提高,其中以4％和6％浓度PVA处理烟草种子3d,效率最好。
To select the best concentration and time of seed priming by polyvinyl alcohol (PVA) .this paper studied the change of seed vigor,physiology and biochemistry after Polyvinly alcohol (PVA) initiated tobacco seed. The result showed that germination percentage and seed vigor of tobacco seeds were increased,and germination time were shorten when seeds were primed in 2%-6% of PVA solution for 1 d-5 d . Comparison with unpriming seeds,the electric conductivity rate of seed drench was reduced obviously and the activities of peroxidase-and acid phosphatase were increased clearly. 4% and 6% of PVA solution for three days was better disposed tobacco seed.
出处
《西北农业学报》
CAS
CSCD
2003年第3期53-56,共4页
Acta Agriculturae Boreali-occidentalis Sinica
基金
陕西省烟草专卖局重点资助项目(2001KN-2)
关键词
聚乙烯醇
渗调
烟草
种子活力
芽期
酶活性
Polyvinyl alcohol (PVA)
Priming
Tobacco
Seed vigor
Enzyme activity
