| 【Objective】The study was conducted to evaluate the introduction performance of ‘Zitian seedless’ grape in Turpan region and the effect of gibberellin (GA3) on the fruit quality of ‘Zitian seedless’ grape.【Method】The introduction, cultivation and drying experiment of ‘Zitian seedless’ grape were carried out from 2012 to 2020, and its cultivation characters and drying charateristics were compared with those of local main cultivars. Different mass concentrations of GA3 were sprayed after flowering and the effects of different concentrations of GA3 on the fruit quality of ‘Zitian seedless’ grape were compared.【Result】‘Zitian seedless’ grape was a mid-late mature cultivar in Turpan region, with medium growth potential, high and stable yield, the fruit was purple black to blue-black when it was completely ripe, with uniform fruit size and coloring, the average culster mass and average grain mass were 634.62 g and 5.28 g respectively, and TSS/TA was 55.94. Such cultivar had excellent appearance and internal quality, which enriched the cultivar diversity of seedless table grapes in Turpan region, but the dry output rate was only 16.33% with poor plumpness and appearance quality, which was significantly lower than that of local main cultivars. Cluster mass, grain mass and pedicel coarseness were significant increased with GA3 treatments after flowering, while TSS content, anthocyanin content and GIRG were significant decreased. Under 50 mg/L GA3 treatment, the cluster mass was increased by 21.76% compared with CK, the content of flavonoids in pericarp increased by 34.03%, while contents of TSS and anthocyanins in pericarp and CIRG were decreased by 9.26%, 25.52%, and 13.26% respectively compared with CK, and the decrease rates were minimum compared with 150 mg/L and 100 mg/L GA3 treatment. Under 50 mg/L GA3 treatment, fruit coloring was uniform, with moderate cluster density, high TSS/TA and sweet taste, while coloring of ‘Zitian seedless’ grape under 150 mg/L and 100 mg/L treatments was bad, with dense cluster, less sweet taste and overall quality reduction.【Conclusion】The cultivation characters and fruit quality of ‘Zitian seedless’ grape are good, but drying characteristics is poor, therefore, ‘Zitian seedless’ grape has better development prospects in Turpan region as table grape. Spraying 50 mg/L GA3 on the tenth day after flowering can effectively improve the quality of ‘Zitian seedless’ grape. |
