期刊论文

中文

贵州农业科学

1001-3601

2009

37

6

48-50

10.3969/j.issn.1001-3601.2009.06.015

[基金项目]湖南省教育厅项目“南岳7种凤仙花属植物种子的贮藏和萌发特性及其生理机制研究”[08C171] 衡阳师范学院2008年度大学生研究性学习和创新性实验计划一般项目“南岳凤仙花属植物种子的贮藏与萌发特性比较研究”[11]

本校为第一机构

研究凤仙花种子萌发过程中的生理生化变化,为探寻野生凤仙花引种驯化的途径提供理论依据.将凤仙花种子分别萌发0 h、12 h、24 h、36 h、48 h,测定不同萌发阶段种子的吸水量、膜透性、可溶性糖、淀粉、粗脂肪含量,以及淀粉酶、SOD酶、CAT酶活性.随着凤仙花种子萌发时间的延长,其吸水量逐渐增加,膜透性降低,膜系统逐渐被修复,淀粉酶活性逐渐升高,淀粉和粗脂肪含量降低,可溶性糖含量逐渐升高,SOD、CAT酶活性在萌发前36 h缓慢下降,到48 h时略有上升.因此,在栽培凤仙花时可以先浸种24 h,这样有利于种子更好地吸收水分,体内的储藏物质就能快速被动员,促进种子顺利萌发.

In order to provide a theory evidence for the domestication of Impatiens balsamina the changes of physiology and biochemistry were studied during its seed germination. After the seed germination at 0 h, 12 h,24 h, 36 h, 72 h and 48 h, the water absorption, membrane permeability, content of soluble sugar, starch and fat and activity of amylase, SOD and CAT were tested. The results show that with extension of the germination time, the water absorption increases, the membrane permeability decreases gradually because of the membrane restoration along with water imbibition, the activity of amylase ...