摘要
为探明酸浆(Physali alkekengi L.)幼苗对不同干旱处理的生理响应机制,为耐旱酸浆资源的开发利用提供科学依据,以酸浆的两个品种粒粒甜和铁把幼苗为材料,采用PEG-6000(质量分数0、5%、10%、15%、20%、30%)模拟干旱胁迫的方法 ,研究在干旱条件下酸浆两个品种幼苗的生理生化特性。结果表明,随着PEG-6000浓度升高,丙二醛(MDA)含量呈现持续上升趋势,超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性、脯氨酸(Pro)含量和可溶性糖(SS)含量呈现先上升再下降的趋势。粒粒甜的POD、CAT活性以及可溶性糖含量在15%的PEG-6000处理下达到最高值,而铁把的POD、CAT活性以及可溶性糖含量分别在20%、15%和10%的浓度下达到最高值。在PEG-6000浓度20%时,两个品种酸浆幼苗的SOD活性和Pro含量均达到最大值。粒粒甜对PEG-6000的耐受性好于铁把。
In order to explore the physiological response mechanism of Physali alkekengi L.in different drought treatments,and provide scientific references for exploration and utilization of drought tolerant varieties,Lilitian and Tieba seedlings were used as materials.The physiological and biochemical characteristics of two kinds of Physalis were measured by PEG-6000(mass fraction 0,5%,10%,15%,20%,30%)simulation drought stress.The results showed that with the increasing concentration of PEG-6000,malondialdehyde(MDA)content showed a rising trend,superoxide dismutase(SOD)activity,peroxidase(POD)activity,catalase(CAT)activity,proline(Pro)content and soluble sugar content(SS)first increased and then decreased.The POD,CAT activity and soluble sugar content of Lilitian reached the highest value under the PEG-6000 treatment of 15%concentration,while the POD,CAT activity and soluble sugar content of Tieba reached the highest value at 20%,15%and 10%concentrations respectively.PEG-6000 concentration arrive at 20%,SOD activity and Pro content of two varieties of seedlings reached the maximum.Lilitian is better tolerated to PEG-6000 than Tieba.
作者
于爽
李帅
高剑
郝婧玮
才忠喜
YU Shuang;LI Shuai;GAO Jian;HAO Jing-wei;CAI Zhong-xi(College of Life Science and Technology,Mudanjiang Normal College,Mudanjiang 157011,Heilongjiang,China)
出处
《湖北农业科学》
2018年第7期87-90,共4页
Hubei Agricultural Sciences
基金
牡丹江师范学院科研项目(YB201606)
黑龙江省哲学社会科学研究项目(16KSB01)
黑龙江省学位与研究生教育教学改革研究项目(JGXM-HLJ-2016101)
作者简介
于爽(1974-),女,黑龙江宝清人,教授,硕士,主要从事植物生物学的教学和科研工作,(电话)15945346008(电子信箱)swxys@126.com
