GA_3和TDZ对“茉莉香”葡萄果穗生长和品质的影响

Effects of GA_3 and TDZ on fruit bunch and quality of Molixiang grape

为探索生长调节剂对＂茉莉香＂葡萄果穗拉长、坐果、无核化和果实膨大的效果,以＂茉莉香＂葡萄为试材,进行了GA3和TDZ处理。结果表明：能够满足＂茉莉香＂葡萄拉长果穗、坐果和无核化要求的适宜处理时期和浓度分别为盛花前5d以100mg/L GA3处理和盛花前10d以50-100mg/L GA3处理。TDZ处理显著增大果穗,膨大效果显著大于对照和GA3处理,同时,GA3和TDZ处理显著降低可溶性固形物含量和提高可滴定酸含量,而且高浓度TDZ处理膨大效果受到相对抑制。

In order to explore the effect of growth regulator on fruit cluster elongating, fruit-set, seedless and enlargement of Molixiang grape. Molixiang grape was used as experimental material and sprayed with GAa and TDZ. The results showed that the treatments of 5-days pre-hloom with 100 mg/L GA：3 and 10- days pre-bloom with 50~100 mg/L GA3 can satisfy the fruit cluster elongating, fruit-set and seedless of Molixiang grape. The effect of TDZ treatment on fruit cluster elongating and enlargement of Molixiang grape was significant than that of control and GA3, meanwhile, the treatment of GAa and TDZ could re- duce the content of soluble solids and improve content of titratable acid. And the high concentration of TDZ treatment could relatively restrain the effect on enlargement of Molixiang grape.