PT - JOURNAL ARTICLE AU - Catherine M. Cox AU - Ana Carolina Favero AU - Peter R. Dry AU - Michael G. McCarthy AU - Cassandra Collins TI - Rootstock Effects on Primary Bud Necrosis, Bud Fertility, and Carbohydrate Storage in Shiraz AID - 10.5344/ajev.2012.11012 DP - 2012 Jun 01 TA - American Journal of Enology and Viticulture PG - 277--283 VI - 63 IP - 2 4099 - http://www.ajevonline.org/content/63/2/277.short 4100 - http://www.ajevonline.org/content/63/2/277.full SO - Am. J. Enol. Vitic.2012 Jun 01; 63 AB - Shiraz grapevines (Vitis vinifera L.) grafted to three different hybrid (American Vitis) rootstocks at two sites were used to evaluate the effect of rootstock on primary bud necrosis (PBN), fruitfulness, and carbohydrate storage. Buds were dissected during winter dormancy and assessed for the number of inflorescence primordia and incidence of primary bud necrosis. Trunks, canes, and roots were sampled at dormancy for carbohydrate concentration. A water deficit treatment was also applied at one of the two locations. Fruitfulness and yield were affected by water deficit. Rootstock type influenced the incidence of primary bud necrosis, fruitfulness, and carbohydrate concentration at both sites.