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Light and temperature effects on shoot fruitfulness in Vitis vinifera L. cv. Sultana: Influence of trellis type and grafting
Author(s) -
SOMMER KARL J.,
ISLAM MUHAMMAD T.,
CLINGELEFFER PETER R.
Publication year - 2000
Publication title -
australian journal of grape and wine research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 77
eISSN - 1755-0238
pISSN - 1322-7130
DOI - 10.1111/j.1755-0238.2000.tb00167.x
Subject(s) - trellis (graph) , rootstock , vineyard , vine , canopy , cultivar , biology , shoot , horticulture , grafting , agronomy , botany , mathematics , chemistry , statistics , decoding methods , organic chemistry , polymer
Fruit bud initiation in Sultana is more sensitive to climatic factors than fruit bud initiation in other cultivars. This paper considers historical findings regarding the influence of light and temperature on fruit bud initiation and fruitfulness in view of modern Sultana vineyard management practices. Past results were reviewed and confirmed by experiments in which variability in vine size and structure was introduced by grafting and modifications of trellis design. Ramsey‐grafted vines were consistently less fruitful than own‐rooted Sultana, possibly because of a more shaded canopy interior due to greater vegetative growth of vines grafted to Ramsey rootstock. Carbohydrate reserves of node and internode tissue in late winter between node 2 and 18 followed a similar trend along the cane as fruitfulness in the following spring.