|Table of Contents|

Effect of Canopy Thickness on Microclimate,Photosynthesis and Berry Quality of ‘Cabernet Sauvignon’(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年17
Page:
20-28
Research Field:
Publishing date:

Info

Title:
Effect of Canopy Thickness on Microclimate,Photosynthesis and Berry Quality of ‘Cabernet Sauvignon’
Author(s):
WANG Zhen1; LIU Didi1; ZHANG Zhenwen1; 2
1.College of Enology,Northwest A & F University,Yangling,Shaanxi 712100；2.Shaanxi Engineering Research Center for Viti-Viniculture,Yangling,Shaanxi 712100
Keywords:
‘Cabernet Sauvignon’ grape; canopy thickness; microclimate; photosynthesis; berry quality
PACS:
S 663.101
DOI:
10.11937/bfyy.20170716
Abstract:
Mechanical canopy pruning system is popular for it′s high efficiency and quality.In order to explore the effect of canopy thickness under mechanical pruning on microclimate,photosynthesis and fruit quality of grapevine,the 4-year-old ‘Cabernet Sauvignon’ was pruned to 70 cm,85 cm and 100 cm with axillary shoot,and 85 cm without axillary shoot.Total leaf area and photosynthesis were measured at veraison stage,and phenols,tannin,total anthocyanin of skin were tested after harvest.The data was analyzed by one-way ANOVA,and the result showed that：there was no significant effect on canopy microclimate,but for fruit zone,with thickness increasing,the temperature and light intensity decreased,and the humidity raised；photosynthesis rate of treatment 70 cm (with axillary shoot) improved significantly about 12.9% compared with 85 cm (no axillary shoot),and there was no obvious difference between 85 cm and 100 cm；treatment 70 cm (with axillary shoot) and 85 cm (no axillary shoot) got higher yield and shortened ripening time,and the content of total sugar,pH and anthocyanin enhanced remarkably,while treatment 100 cm could improve total phenols and acid content.In conclusion,mechanical canopy system of 70 cm was adequate for ‘Cabernet Sauvignon’ in Shanxi Jinzhong region.

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Last Update: 2017-09-22