Effect of water stress on physiological and growth charaters of Prunella vulgaris at the vegetative stage / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To study the effect of water stress on physiological and the growth characters of Prunella vulgaris at the vegetative stage.</p><p><b>METHOD</b>The plants were treated timely and quantitatively by weighting method, and the relevant index were measured under different water stress conditions.</p><p><b>RESULT</b>With the long time of water stress, the plants of SY2 and SY3 showed the quickest growth rate and the best of growth vigor. The protective enzyme and osmoregulation substance presented the trend of increase firstly and then decrease. Under the same time of water stress, with the increase of extent in treatment, the protective enzyme and osmoregulation substance presented the trend of increase firstly and then decrease, and SY2 and SY3 were the lowest.</p><p><b>CONCLUSION</b>The protective enzyme and osmoregulation substance of P. vulgaris have a whole effect. The suitable water range of growth in P. vulgaris is 65%-80%.</p>