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

Author:

Wu Jiuyun12,Abudureheman Riziwangguli12,Zhong Haixia23,Yadav Vivek23ORCID,Zhang Chuan23,Ma Yaning12,Liu Xueyan12,Zhang Fuchun23,Zha Qian24,Wang Xiping125ORCID

Affiliation:

1. Turpan Research Institute of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan 838000, China

2. Xinjiang Grape Engineering Technology Research Center, Turpan 838000, China

3. The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China

4. Research Institute of Forestry and Pomology, Shanghai Academy of Agricultural Science, Shanghai 201403, China

5. Colleges of Horticulture, Northwest A&F University, Xianyang 712100, China

Abstract

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

Funder

Xinjiang Academy of Agricultural Sciences

Xinjiang Uygur Autonomous Region Tianshan Talents Training Program

Xinjiang Uygur Autonomous Region Innovation Environment Construction Special Project

Xinjiang Uygur Autonomous Region Tianchi Talent

Publisher

MDPI AG

Subject

Horticulture,Plant Science

Reference45 articles.

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