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   effect of shading cover on some quality properties of ‘bidaneh sefid’ and ‘bidaneh ghermez’ grapes  
   
نویسنده azadshahraki farzad ,zare ghasem ,momeni davood ,mahmoodi razieh
منبع ايمني زيستي - 1401 - دوره : 15 - شماره : 3 - صفحه:1 -14
چکیده    One protected horticultural method against biotic and abiotic stresses is shading covers. using shading cover to reduce the damage of this stress can change the plant’s microclimate and, subsequently, the final product’s quality. this study aimed to investigate the effects of shading cover on grape quality. the grapevines were subjected to shading cover cloth with green color from march to september for two years. in the first year of the experiment, a shading cover with 50% shade was used for bidaneh sefid grape variety, and the result indicated that this percentage of shade reduced the final fruit quality. in the second year of the experiment, 20% shade was used for bidaneh sefid and bidaneh ghermez varieties. results showed that this shading percentage improved the physical properties of the fruit, especially in the bidaneh sefid variety. soluble solid content, titratable acid, and vitamin c of both grape varieties were not affected by 20% shade. like 50% shade, total phenol and antioxidant capacity were decreased by 20% shade in both grape varieties. further research for different shade percentages on different crops and cultivars in every climate will be necessary to develop shading cover technology for horticulture crops in iran.
کلیدواژه grape ,quality ,shading net ,microclimate ,protected horticulture
آدرس agricultural research, education and extension organization(areeo), agricultural engineering research institute, agricultural research, education and extension agricultural engineering research institute, iran, agricultural research, education and extension organization(areeo), agricultural engineering research institute, agricultural research, education and extension, iran, agricultural research, education and extension organization (areeo), isfahan agricultural and natural resources research and education center, agricultural engineering research department, iran, agricultural research, education and extension organization(areeo), temperate fruits research center, horticultural science research institute, iran
پست الکترونیکی mahmoodi.razie@gmail.com
 
   effect of shading cover on some quality properties of ‘bidaneh sefid’ and ‘bidaneh ghermez’ grapes  
   
Authors
Abstract    one protected horticultural method against biotic and abiotic stresses is shading covers. using shading cover to reduce the damage of this stress can change the plant’s microclimate and, subsequently, the final product’s quality. this study aimed to investigate the effects of shading cover on grape quality. the grapevines were subjected to shading cover cloth with green color from march to september for two years. in the first year of the experiment, a shading cover with 50% shade was used for bidaneh sefid grape variety, and the result indicated that this percentage of shade reduced the final fruit quality. in the second year of the experiment, 20% shade was used for bidaneh sefid and bidaneh ghermez varieties. results showed that this shading percentage improved the physical properties of the fruit, especially in the bidaneh sefid variety. soluble solid content, titratable acid, and vitamin c of both grape varieties were not affected by 20% shade. like 50% shade, total phenol and antioxidant capacity were decreased by 20% shade in both grape varieties. further research for different shade percentages on different crops and cultivars in every climate will be necessary to develop shading cover technology for horticulture crops in iran.
Keywords grape ,quality ,shading net ,microclimate ,protected horticulture
 
 

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