水分胁迫对忍冬生长及金银花质量的影响

目的:研究水分胁迫对忍冬生长发育及金银花药材质量的影响。方法:用盆栽法于当年第一茬花开之前进行不同程度的水分胁迫处理,考察忍冬的生长发育和生理指标的情况。结果:水分胁迫引起枝条生长缓慢,叶片比重增加,金银花产量降低,叶内叶绿素含量显著增加;叶片可溶性糖含量有增加趋势,轻度胁迫处理的叶片可溶性蛋白含量显著高于对照与重度处理,叶片中的脯氨酸含量因干旱而升高,随干旱增强花蕾的绿原酸含量显著低于对照。结论:水分条件是影响忍冬枝、叶、花蕾生长发育及金银花产量、质量的重要因子,栽培要适时灌溉,引种时要具备灌溉条件。

Effects of Water Stress on the Growth of Lonicera japonica and Quality of Honeysuckle

Objective: Effects of water stress on the growth of Lonicera japonica and quality of honeysuckle were studied. Methods: Different extent water stress treatment imposed to potted plants before the first florescence of honeysuckle, and the growth and related physiological indexes of Lonicera japonica were determined. Results: Shoot grow slowly as well as the increases of specific weight of leaf and the decrease of the yield of honeysuckle under water stress. The contents of chlorophyl in the leaves treated water stress all increased , and the content of soluble suger had a rising stream. The content of soluble protein in leaves of plant imposed by minor stress treatment was obviously higher than that of CK and severe stress treatment. As the stress was hard, the content of proline in leaves increased significantly. With water stress severing, the content of chlorogenic acid in the flower bud decreased very significantly than CK. Conclusion: Water condition was a important factor affected the growth and development of shoots, leaves and flower buds as well as the quality of honeysuckle. In the cultivation of Lonicera japonica, irrigation timing and certain irrigation condition was necessary.