水杨酸对酸浆种子萌发及幼苗生长的影响
Effects of Salicylic Acid on Seed Germination and Seedling Growth of Physalis
Abstract: Using wild alkekengi as testing materials, this experiment studied the influences of different concentrations (0, 10, 20, 30, 40, 50mg/L) salicylic acid (SA) on wild seed germination and seedling of photosynthetic pigment content, soluble protein content, soluble sugar content, nitrate reductase activity, root activity and other physiological and biochemical index by hydroponic method. The results showed as follows: (1) the suitable concentration of SA promoted wild cherry seed germination, the germination rate, germination potential, germination index, vigor index and root length and stem height, root diameter and stem diameter also increased significantly compared with the control. (2) the appropriate concentration of SA treatment increased the wild cherry seedlings of soluble protein content, soluble sugar content, photosynthetic pigment content, nitrate reductase activity, activity of root tip were significantly higher than those in the control group. It showed that salicylic acid treatment can promote the seedlings of Physalis, and the effect of 30mg/L SA was optimal.
Keywords: Physalis alkekengi; Salicylic acid; Seed germination; Physiologic characteristics
水杨酸对酸浆种子萌发及幼苗生长的影响
目 录
摘 要 1
引言 2
1 材料与方法 2
1.1 实验材料 2
1.2 实验方法 2
1.3 测定项目与方法 3
1.3.1 种子萌发指标和幼苗生长指标的测定 3
1.3.2 生理指标的测定 3
1.4 数据分析 3
2 结果与分析 3
2.1 SA处理对酸浆种子发芽特性的影响 3
2.2 SA处理对酸浆幼苗生长的影响 4
2.3 SA处理对酸浆幼苗生理特性的影响 5
2.3.1 SA处理对酸浆幼苗叶片中可溶性蛋白含量的影响 5
2.3.2 SA处理对酸浆幼苗叶片中可溶性糖含量的影响 6
2.3.3 SA处理对酸浆幼苗叶片中叶绿素含量的影响 6
2.3.4 SA处理对酸浆幼苗叶片中硝酸还原酶活力的影响 7
2.3.5 SA处理对酸浆幼苗根系活力的影响 8
3 讨论与结论 8
参考文献 10
致谢 12
水杨酸对酸浆种子萌发及幼苗生长的影响 引言
酸浆（Physalis alkekengi L）为茄科（Solanaceae）酸浆属（Physalis）多年生草本植物，又名红菇娘、洛神珠、泡泡草等。萼内浆果橙红色，直径1.5～2.5 cm，单果重2.5～4.3 g，可供食用。其原产于中国，我国的酸浆主要在东北地区栽培。酸浆是具有观赏、药用和食用价值的珍稀野生材料，具有极高的开发和研究应用价值[1]。其在药用方面，具有清热解毒、镇痛、化痰、利尿作用，外用可治天疱疮、湿疹[2]。在食用方面，酸浆果实中含有丰富的文生素，其中文生素C含量是番茄的6.4倍、胡萝卜的5.4倍[3]。果实也可加工成果酒、果酱、果冻、果汁饮料。但在生产过程中，酸浆种子发芽率较低，影响酸浆产量并降低了经济效益。