【摘要】 为研究混种对蔬菜生理生化特性及重金属含量的影响,在镉污染条件下,将番茄(Lycopersicon esculentum)和茄子(Solanum melongena)幼苗分别与镉超富集植物龙葵(Solanum nigrum)混种,研究混种龙葵对番茄和茄子幼苗生理生化特性及镉含量的影响。结果表明,与龙葵混种后,番茄根系及地上部分生物量、光合色素含量、抗氧化酶活性、可溶性糖含量、可溶性蛋白含量及地上部分镉含量较单种均增加,仅根系镉含量减少了43.54%。与龙葵混种后,茄子根系及地上部分生物量、光合色素含量、抗氧化酶活性、可溶性糖含量及可溶性蛋白含量较单种均减少,但根系及地上部分镉含量分别增加了44.06%和6.52%。龙葵分别混种番茄和茄子后,其根系镉含量、地上部分镉含量和镉积累量较单种均减少。因此,龙葵混种番茄和茄子不适合用于修复镉污染土壤和作为镉污染地区蔬菜的生产方式。更多还原

【Abstract】 To study the effects of intercropping on physiological and biochemical characteristics and cadmium content of vegetables, Lycopersicon esculentum and Solanum melongena were intercropped with cadmium hyperaccumulator plant S. nigrum under cadmium contamination condition. The results showed that the root and aboveground biomass, photosynthetic pigment content, antioxidant enzyme activity, soluble sugar content,soluble protein content and cadmium content in the aboveground part of L. esculentum were higher than those of monoculture, only cadmium content in root decreased by 43.54%. The root and aboveground biomass,photosynthetic pigment content, antioxidant enzyme activity, soluble sugar content and soluble protein content of S. melongena were decreased after intercropped with S. nigrum, but cadmium content in root and aboveground increased by 44.06% and 6.52%, respectively. The root cadmium content, aboveground cadmium content and cadmium accumulation of S. nigrum intercropped with L. esculentum and S. melongenat were lower than those of monoculture. Therefore, L. esculentum and S. melongena intercropped with S. nigrum are not suitable for repairingthesoilpollutedbycadmiumandforproducingvegetablesintheareapollutedbycadmium.更多还原