摘要
以日本朝天椒(Capsicum frutescens var.)为材料,采用不同含量的聚乙二醇(PEG)、NaCl和不同时间进行浸种处理,探讨不同引发处理对朝天椒种子活力相关生理生化指标的影响.结果表明:适当增加PEG、NaCl含量和延长引发时间,可以提高朝天椒种子的各项活力指标,20%PEG和0.1 g.L-1NaCl处理可以显著提高朝天椒种子的发芽势和发芽率,与对照组相比,分别提高21.99%、29.50%和12.9%、16%;PEG处理可以显著降低种子浸出液的相对电导率及种子中丙二醛(MDA)含量,且与PEG含量呈正相关;NaCl处理后的朝天椒种子MDA含量均低于对照组,0.1 g.L-1NaCl处理可使相对电导率和MDA含量达到最低,脱氢酶活性最高.朝天椒种子的发芽率、发芽势、种子指数与脱氢酶活性之间呈显著正相关,与相对电导率及MDA含量呈显著负相关.因此,采用适宜含量的PEG和NaCl处理朝天椒种子,可显著提高其活力.
The Japanese pepper（Capsicum frutescens var.） was used as material to study effects of the different contents of polyethylene glycol（PEG） and NaCl pre-soaking with different time on seed germination and physiological characteristics.Results showed that PEG and NaCl increased all seeds vigor with priming treatment concentration and time,20% PEG and 0.1 g·L-1 NaCl had a significant promotion to germination energy and percentage,comparing with control,increased by 21.99%,29.50%,and 12.9%,16% respectively.The different contents of PEG treatment could significantly reduce relative electrical conductivity and MDA content in seeds,which correlated positively with PEG content.MDA content in seed treated with NaCl was lower than control,the relative electrical conductivity,MDA content were the lowest and the dehydrogenase activity was the highest in 0.1 g·L-1 NaCl treatment.There was a significantly positive correlation of the germination percentage,germination energy,germination index to the dehydrogenase activity,and a significant negative correlation of them to the relative electrical conductivity and MDA content.Therefore,the suitable content of PEG and NaCl could significantly improve the viability of the pepper seeds.
出处
《福建农林大学学报（自然科学版）》
CSCD
北大核心
2012年第5期469-474,共6页
Journal of Fujian Agriculture and Forestry University:Natural Science Edition
关键词
朝天椒
引发处理
萌发
生理特性
Capsicum frutescens var.
priming treatment
germination
physiological characteristics
