The Response of Monoterpene Compounds of cv. Gewürztraminer Grape(Vitis vinifera L.) to Various Doses of Prohexadione-Calcium Applied at Different Periods

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The Response of Monoterpene Compounds of cv. Gewürztraminer Grape(Vitis vinifera L.) to Various Doses of Prohexadione-Calcium Applied at Different Periods

This study was carried out to determine influences of determine diverse doses of prohexadione-calcium (pro-ca) applied at two different periods such as 1st period (pre-bloom) and 2ndperiod (post-bloom) on monoterpene compounds and other grape quality attributes of cv. Gewürztraminer during the growing season of the 2010 in Tekirdag, Turkey. Research was arranged according to two factor-factorial randomized parcels with four replicates. Pro-ca has abilities to control vegetative growth and reduce berry sizes in grapevine. In this study, pro-ca applications caused to improvements in grape monoterpene compounds like free volatile monoterpene (FVT) and potentially volatile monoterpene (PVT) and other quality attributes of cv. Gewürztraminer. Among the application doses, the best results about grape quality characteristics of cv. Gewürztraminer were respectively obtained from pro-ca doses of 200 and 300 ppm when they were especially applied to grapevines at 1stperiod (pre-bloom)

Keywords:

Vitis vinifera L., aromatic grape varieties, monoterpenes, plant growth retardants pro-ca,

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