不同盐浓度对香菜光合色素含量的影响

目的]明确不同盐浓度对香菜光合色素的生理效应.方法]以自行培养的香菜作为试验材料,采用紫外分光光度法研究了不同浓度的盐胁迫对香菜叶绿素a、叶绿素b、叶绿素总含量、类胡萝卜素及色素含量的影响.结果]试验表明,Na＋低浓度（50 mmol/L）胁迫时,香菜中叶绿素等有机物有所积累,100 mmol/L盐浓度处理的香菜中叶绿素含量最高,营养物质积累最多,当盐浓度超过200mmol/L后香菜的生长受到明显的抑制作用.结论]研究可为香菜生产的盐浓度调节提供参考依据.

Effects of Salinity on Photosynthetic Pigment Production of Coriandrum sativum

Objective ] To determine physiological effect of different salt concentration on pigment of Coriandrum sativum. Method] The dif- ferent concentrations of Na ＋ making stress on indoor sand - culture Coriandrum sativum of chlorophyll a, chlorophyll b, total chlorophyll, ca- rotenoids and pigment were measured by using the ultraviolet spectrophotometer. Result ] The results show that, when Na ＋ solution is in low concentration （50 mmol/L） , the chlorophyll content were increased than the control group. When under 100 mmol/L Na ＋ concentration, Co- riandrum sativum has the highest content of chlorophyll in the most nutrients accumulation. High concentration （200 mmol/L） would inhibit the growth of Coriandrum sativum. Conclusion] The study can provide reference basis for adjusting salt concentration in production of Corian- drum sativum.