Effects of exogenous calcium on plant morphogensis,photosynthetic pigment,photosynthetic capacity and root vitality of Luffa aegyptiaca
In order to explore the mechanism of the influence of exogenous calcium on the growth and physiological characteristics of Luffa aegyptiaca and to explore its suitable exogenous calcium concentration,the effects of different concentrations of exogenous calcium on the morphogenesis,photosynthetic pigments,photosynthetic capacity,and root activity of Luffa aegyptiaca were studied using soilless cultivation.The results showed that an appropriate concentration of exogenous calcium had a positive promoting effect on Luffa aegyptiaca height,stem diameter,leaf area,and root length,and the optimal concentration of exogenous calcium was 12 mmol/L,which increased by 19.47%,25.15%,19.60%,and 17.85%compared to the control CK,respectively,and the differences were statistically significant(P<0.05).The chloro-phyll content of leaves increased first and then decreased with the increase of exogenous calcium concentration.The characteristics of low concentration promotion and high concentration inhibition were showed by the effect of exogenous calcium on the net photosynthetic rate and root vitality of Luffa aegyptiaca,and the value was relatively high at an exog-enous calcium concentration of 12 mmol/L,which was 11.22%and 19.01%higher than the control CK,respectively.An exogenous calcium concentration of 12 mmol/L was beneficial for the morphogenesis,enhanced photosynthetic capacity and root vitality of Luffa aegyptiaca.
万方数据
维普
