活体染色对银边吊兰叶面着色及植株碳氮营养的影响

以银边吊兰盆栽苗为试验材料，研究2.0 mmol/L甲基橙、1.0 mmol/L甲基紫、1.0 mmol/L中性红对其生物量、根冠比、叶面着色及植株碳氮营养的影响。结果表明：中性红处理的生物量显著大于甲基橙和对照处理；3种染色剂处理后根冠比显著降低，其中中性红处理降幅最大。3种染色剂处理后，叶面a^*、b^*和L^*值逐渐增大，C^*值减小，H⁰和CIRG值增大，叶面呈粉红色；叶绿素a、叶绿素b、叶绿素a + b和类胡萝卜素含量大幅下降。3种染色剂处理还使植株可溶性糖、淀粉含量下降，其中甲基紫处理的降幅最大；可溶性蛋白质和总氮均呈上升趋势，其中中性红处理升幅最大；碳氮比总体呈下降趋势。因此，尽管活体染色使银边吊兰植株碳氮营养轻微损失，但染色后可提高其室内栽培的观赏性。

Effect of Intravital Staining on Leaf Surface Coloring and Plant Carbon and Nitrogen Nutrition in Chlorophytum comosum var. variegatum

The potted seedlings of Chlorophytum comosum var. variegatum as the experimental materials, effect of 2.0 mmol/L methyl orange, 1.0 mmol/L methyl violet and 1.0 mmol/L neutral red on the biomass, root shoot ratio, leaf surface coloring and plant carbon and nitrogen nutrition were studied. The results showed that the biomass of neutral red treatment was significantly greater than that of methyl orange and CK treatment; three coloring agent treatment, root shoot ratio decreased significantly, of which the largest decline in treatment was neutral red. a*, b* and L* values increased gradually, while C value decreased, H0 and CIRG value increased, and the leaves were pink on the surface after the treatment of three coloring agent. The contents of chlorophyll a, chlorophyll b, chlorophyll a + b and carotenoid decreased significantly. After 3 coloring agent treatments, the contents of soluble sugar starch decreased, the largest decline was methyl violet treatment; the soluble protein and total nitrogen showed a rising trend, and the neutral red treatment increased most; the carbon and nitrogen ratio decreased. Although staining had certain effects on plant carbon and nitrogen nutrition of C.comosum var. variegatum Diaolan, but dyeing could improve the ornamental value of indoor cultivation.