南方农业学报2011，Vol.42Issue(7)：715-718,4.
PEG模拟干旱胁迫对11份黄麻种子萌发的效应
Effect of PEG induced drought stress on the germination indices of different varieties of Corchorus capsularis L.
摘要
Abstract
[Objective]The present experiment was conducted to screen the different varieties of Corchorus capsularis L. For drought resistance in germination period, and to establish the evaluation system of drought resistance. [Method]The seeds of eleven different varieties of Corchorus capsularis L. Were germinated in petri dishes under different concentrations (5, 10, 15, 20 and 25%) of polyethylene glycol (PEG6000). Seed germination indices, viz., relative germination rate (RGR), relative germination energy (REG), relative germination index (RGI), relative vigor index (RVI), relative radicle length (RRL), relative embryo length (REL), were determined. [Result]It was observed that RGR, REG, RGI, RVI, RRL and REL in seeds of all the varieties of Corchorus capsularis L. Decreased with the increasing concentration of PEG. However, low concentration of PEG (5%) promoted RRL in Corchorus capsularis L. Seeds, and 10-25% PEG concentration inhibited its REL Among the varieties of C. Capsularis, Yuan 09-30 and Yuan 09-35 recorded best RGR, while Yuan 3 showed the worst. Out of C. Olitorius varieties, Chang 09-41 and Chang 09-40 recorded best RGR, while Chang 09-1 showed the worst. [Conclusion]The concentrations of PEG ranging from 5-10% and 15-20% were found the best in terms of differentiating in varieties of C. Olitorius and C. Capsularis, respectively, for drought resistance during the germination period.关键词
聚乙二醇(PEG)/干旱胁迫/黄麻/种子萌发/抗旱性Key words
PEG/ Corchorus capsularis L./ seed germination/ drought resistance分类
农业科技引用本文复制引用
杨柳,周瑞阳,金声杨..PEG模拟干旱胁迫对11份黄麻种子萌发的效应[J].南方农业学报,2011,42(7):715-718,4.基金项目
现代农业产业技术体系建设专项资金项目(nycytx-19-E15) （nycytx-19-E15）
