The rate of leaf appearance was compared in two grapevine (Vitis vinifera L.) varieties (Sangiovese and Cabernet-Sauvignon) and in three different short pruning training systems (traditional cordon, single curtain and vertical cordon pruned). Results showed that there was no significant effect of training systems on leaf appearance. There was instead a significant effect of cultivar that suggested a different adaptive response of cultivars to climates they were selected for. A recently published simulation model of leaf appearance in grapevine was used to interpretate these differences.
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