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Effects of severity of post-flowering leaf removal on berry growth and composition of three red Vitis vinifera L. cultivars grown under semiarid conditions.
J Agric Food Chem. 2012 Jun 13; 60(23):6000-10.JA

Abstract

The effects of the severity of post-flowering leaf removal on the growth and phenolic composition of berry skin and seeds were studied in three Vitis vinifera L. genotypes over two consecutive seasons, 2007 and 2008. The study was conducted in a commercial vertical shoot positioned (VSP)-trained nonirrigated vineyard of northern Greece, planted with cultivars Merlot, Cabernet Sauvignon, and Sangiovese. Three different severities of leaf removal in the fruit zone were applied manually at berry set: nondefoliated (ND), removal of the lateral shoots of the first six basal nodes (LR), and full removal of the total leaf area (main leaves and lateral shoots) of the first six basal nodes (FR). Grape samples were obtained at commercial harvest. Leaf removal decreased yield per vine and cluster weight in Merlot and Sangiovese. Cluster compactness was reduced with the severity of defoliation only in Merlot, due to a decrease in berry number per cluster; berry fresh weight was unaffected in both cultivars. On the contrary, in Cabernet Sauvignon, yield was unaffected but berry size was restrained by leaf removal. Skin and seed mass followed variations in berry mass (except for seed mass in Sangiovese). Fruit zone leaf removal did not affect must soluble solids and increased titratable acidity only in Merlot. Defoliation increased skin anthocyanins in Merlot and Cabernet Sauvignon in the order FR > LR > ND but significantly reduced seed flavan-3-ols mainly as a result of the reduction in catechin and epicatechin amount. For these varieties, FR had lower seed flavan-3-ols than ND in both varieties, whereas LR had intermediate values. However, in Sangiovese, the highest seed phenolic content was recorded in LR. The results showed that post-flowering leaf removal improved the overall berry composition in Merlot and Cabernet Sauvignon but had limited effect in Sangiovese.

Authors+Show Affiliations

Department of Food Science and Technology, Agricultural University of Athens , 75 Iera Odos, 11855 Athens, Greece.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22630367

Citation

Kotseridis, Yorgos, et al. "Effects of Severity of Post-flowering Leaf Removal On Berry Growth and Composition of Three Red Vitis Vinifera L. Cultivars Grown Under Semiarid Conditions." Journal of Agricultural and Food Chemistry, vol. 60, no. 23, 2012, pp. 6000-10.
Kotseridis Y, Georgiadou A, Tikos P, et al. Effects of severity of post-flowering leaf removal on berry growth and composition of three red Vitis vinifera L. cultivars grown under semiarid conditions. J Agric Food Chem. 2012;60(23):6000-10.
Kotseridis, Y., Georgiadou, A., Tikos, P., Kallithraka, S., & Koundouras, S. (2012). Effects of severity of post-flowering leaf removal on berry growth and composition of three red Vitis vinifera L. cultivars grown under semiarid conditions. Journal of Agricultural and Food Chemistry, 60(23), 6000-10. https://doi.org/10.1021/jf300605j
Kotseridis Y, et al. Effects of Severity of Post-flowering Leaf Removal On Berry Growth and Composition of Three Red Vitis Vinifera L. Cultivars Grown Under Semiarid Conditions. J Agric Food Chem. 2012 Jun 13;60(23):6000-10. PubMed PMID: 22630367.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of severity of post-flowering leaf removal on berry growth and composition of three red Vitis vinifera L. cultivars grown under semiarid conditions. AU - Kotseridis,Yorgos, AU - Georgiadou,Afroditi, AU - Tikos,Panagiotis, AU - Kallithraka,Stamatina, AU - Koundouras,Stefanos, Y1 - 2012/06/04/ PY - 2012/5/29/entrez PY - 2012/5/29/pubmed PY - 2014/7/19/medline SP - 6000 EP - 10 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 60 IS - 23 N2 - The effects of the severity of post-flowering leaf removal on the growth and phenolic composition of berry skin and seeds were studied in three Vitis vinifera L. genotypes over two consecutive seasons, 2007 and 2008. The study was conducted in a commercial vertical shoot positioned (VSP)-trained nonirrigated vineyard of northern Greece, planted with cultivars Merlot, Cabernet Sauvignon, and Sangiovese. Three different severities of leaf removal in the fruit zone were applied manually at berry set: nondefoliated (ND), removal of the lateral shoots of the first six basal nodes (LR), and full removal of the total leaf area (main leaves and lateral shoots) of the first six basal nodes (FR). Grape samples were obtained at commercial harvest. Leaf removal decreased yield per vine and cluster weight in Merlot and Sangiovese. Cluster compactness was reduced with the severity of defoliation only in Merlot, due to a decrease in berry number per cluster; berry fresh weight was unaffected in both cultivars. On the contrary, in Cabernet Sauvignon, yield was unaffected but berry size was restrained by leaf removal. Skin and seed mass followed variations in berry mass (except for seed mass in Sangiovese). Fruit zone leaf removal did not affect must soluble solids and increased titratable acidity only in Merlot. Defoliation increased skin anthocyanins in Merlot and Cabernet Sauvignon in the order FR > LR > ND but significantly reduced seed flavan-3-ols mainly as a result of the reduction in catechin and epicatechin amount. For these varieties, FR had lower seed flavan-3-ols than ND in both varieties, whereas LR had intermediate values. However, in Sangiovese, the highest seed phenolic content was recorded in LR. The results showed that post-flowering leaf removal improved the overall berry composition in Merlot and Cabernet Sauvignon but had limited effect in Sangiovese. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/22630367/Effects_of_severity_of_post_flowering_leaf_removal_on_berry_growth_and_composition_of_three_red_Vitis_vinifera_L__cultivars_grown_under_semiarid_conditions_ L2 - https://doi.org/10.1021/jf300605j DB - PRIME DP - Unbound Medicine ER -