The Impact of High Temperatures in the Field on Leaf Tissue Structure in Different Grape Cultivars

Global warming will significantly affect grapevine growth and development. To analyze the effects of high temperature on leaf tissue structure grapevines in field, 19 representative cultivars were selected from germplasm resources garden Turpan Research Institute Agricultural Sciences, XAAS. Twelve indexes leaves, including thickness upper epidermis (TUE), palisade (TPT), vein (LV), spongy (TST), lower (TLE), stoma (St), guard cell (GC), cuticle (Cu), compactness (CTR) porosity (SR), measured during natural high-temperature period Turpan. The results showed significant differences under temperature. Based comprehensive comparative analysis phenotype we identified that leaves some cultivars, ‘Zaoxia Wuhe’, ‘Centennial Seedless’ ‘Kyoho’ strong heat tolerance, whereas ‘Golden Finger’, ‘Shine Muscat’, ‘Flame Seedless’, ‘Bixiang Wuhe’ ‘Thompson sensitivity to We further evaluated tolerance different by principal component optimal segmentation clustering ordered samples. These findings provide a theoretical basis for adopting appropriate cultivation management measures reduce effect temperatures offer fundamental knowledge future breeding strategies heat-tolerant varieties.