嫁接对网纹甜瓜果实发育、糖含量及蔗糖代谢相关酶活性的影响

 试验研究了嫁接对日光温室栽培的网纹甜瓜果实发育、糖含量及蔗糖代谢相关酶活性的影响。结果表明: 嫁接加快了果实的膨大速度, 但对中果肉厚度影响不大; 降低了网纹甜瓜中果肉内的果糖、葡萄糖含量; 改变了网纹甜瓜蔗糖积累模式, 嫁接网纹甜瓜中果肉内蔗糖积累时间较自根提前了7 d左右,蔗糖含量高于自根; 但嫁接降低了网纹甜瓜中果肉的总糖含量及酸性转化酶(AI) 和中性转化酶(NI) 活性, 提高了蔗糖磷酸合成酶( SPS) 和蔗糖合成酶( SS) 活性。

Effects of Grafting on Development,Carbohydrate Content and Sucrose-metabolizing Enzymes Activities of Muskmelon Fruit

In this experiment, we studied on the effects of grafting on development, carbohydrate content and sucrose-metabolizing enzymes activities of muskmelon fruit in solar greenhouse. The results showed that the enlarging speed of fruit had been quickened, and little effects on mesocarp thick of muskmelon fruit. By grafting, Fructose and glucose content of mesocarp of muskmelon fruit decreased, and the pattern of sucrose accumulation was also changed by grafting, the schedule of sucrose accumulation bringing forward about 7 days compared with the own root muskmelon, and sucrose content of mesocarp of muskmelon fruit was also higher than it. But total sugar content, acid invertase (AI) and netutral invertase (NI) activities of mesocarp of muskmelon fruit declined, sucrose phosphate synthase activities and sucrose synthase activities were evidently improved by grafting.