陕西林业科技2023，Vol.51Issue(5)：16-21,6.DOI:10.3969/j.issn.1001-2117.2023.05.004
干旱胁迫对不同种源酸枣种子萌发的影响
Drought Stress to Different Provenances of Jujube
摘要
Abstract
In order to explore the effects of drought stress on seed germination of different provenances of jujube,and select the varieties with excellent drought resistance,this study took four provenances of jujube seeds from Wupu,Hengshan,Zizhou and Jiaxian of Yulin City as test materials.Different PEG concentration gradients were applied respectively,and six indexes including germination rate,germination potential,germination index,root length,bud length and vitality index were used as the basis.he results showed that with the increase of PEG concentration,the germination rate,germina-tion potential,root length,bud length,germination index and vigor index of jujube seeds all showed a decreasing trend.Except Wupu provenance,the germination rate of jujube seed from the same source was significantly different among the five treatment groups with PEG-6000 mass concentration at 0,30,60,90 and 120 g·L-1(P＜0.05).The drought resistance of jujube seeds in Jiaxian,Wubao,Hengshan and Zizhou increased successively,while the altitude decreased successively.This may be because of the differences in elevation and rainfall in different regions.In order to adapt to different environments,jujube seeds of different provenances adjust their growth and metabolic mechanisms ac-cording to drought severity,and ultimately develop their different drought resistance.The result from this study would provide theoretical basis for the breeding of drought-resistant varieties of jujube in Yulin area and further research on the physiological mechanism of drought resistance of jujube.关键词
酸枣种子/干旱胁迫/种子萌发/PEG-600/发芽率Key words
Jujube seed/drought stress/seed germination/PEG-600/germination rate分类
农业科技引用本文复制引用
李林山,王梓瑜,薛浩博,张一飞,段义忠..干旱胁迫对不同种源酸枣种子萌发的影响[J].陕西林业科技,2023,51(5):16-21,6.基金项目
陕西省教育厅2022年度一般专项科研计划项目(22JK0632) （22JK0632）
榆林市2022年科技计划项目(CXY-2022-71) （CXY-2022-71）
榆林市2022年科技计划项目(CXY-2022-56) （CXY-2022-56）
榆林市2022年科技计划项目(CXY202257). （CXY202257）
