Effects of Different Trellis Systems on Fruit-zone Microclimate, Berry Quality and Anthocyanins of ‘Xinyu’ Grape (Vitis vinifera L.)

摘要

In 2021, this study investigated the effects of three different trellis systems on the fruit-zone microclimate, berry quality and anthocyanins of ‘Xinyu’ grape in Shanshan, Xinjiang, China. The results showed that the light and heat energy of fruit-zone microenvironment were higher for inclined ingle dragon trunk shaping + Horizontal leaf curtain (ISDTS-H) and inclined single dragon trunk shaping + V and Horizontal leaf curtain (ISDTS-VH) than for single dragon trunk shaping + Horizontal leaf curtain (SDTS-H). SDTS-H was more susceptible to low humidity than ISDTS-VH. The canopy area and leaf area index around the fruit were increased and canopy closure was increased with ISDTS-VH compared to SDTS-H. ISDTS-VH increased berry weight, total solublesolids (TSS) and yield. Delphinidin concentration and total delphinidin proportion with SDTS-H were higher than that with ISDTS-VH and SDTS-H, respectively. In general, ‘Xinyu’ grape grown with the ISDTS-VH trellis system achieved high quality under the local environmental conditions. These results provide a reference for the trellis systems selection and optimization of the ‘Xinyu’ grape cultivar.