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Madhurababu Kunta, Sandy Chavez, Zenaida Viloria, Hilda S. del Rio, Madhavi Devanaboina, George Yanev, Jong-Won Park, and Eliezer S. Louzada

until the canopy shows stunting, premature defoliation and branch dieback ( Naqvi, 2004 ). Foot rot infection begins above the soil surface where a lesion on the bark can extend from the scion to the base of the rootstock ( Savita and Nagpal, 2012 ). Gum

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Sawyer N. Adams, Walter O. Ac-Pangan, and Lorenzo Rossi

citrus ‘US-942’ rootstock reacted to salinity, which has not been studied before ( Bowman and McCollum, 2010 ). Should ‘US-942’ rootstock react similarly to the other plant species that have been tested, the apoplastic barriers will develop closer to the

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Kevin Fort, Joaquin Fraga, Daniele Grossi, and M. Andrew Walker

The use of rootstocks in viticulture was initiated in response to the widespread destruction of European vineyards after the inadvertent introduction of the grape phylloxera ( Daktulosphaira vitifoliae ) during the mid-19th century ( Ordish, 1972

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David H Suchoff, Christopher C. Gunter, Jonathan R. Schultheis, Matthew D. Kleinhenz, and Frank J. Louws

grafting. Essentially a root transplant, grafting offers the ability to manage numerous soil-borne pathogens that affect solanaceous and cucurbitaceous crops ( Louws et al., 2010 ). Furthermore, recent work has demonstrated the ability of rootstocks to

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Haishan An, Feixiong Luo, Ting Wu, Yi Wang, Xuefeng Xu, Xinzhong Zhang, and Zhenhai Han

depth) impact the reproductive and vegetative growth of apple trees ( Yao et al., 2006 ). Detailed knowledge about fine root production, mortality, and spatial distribution of dwarfing rootstocks is currently insufficient to understand the dwarfing

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Ayse Coban, Yelderem Akhoundnejad, Sultan Dere, and H. Yildiz Dasgan

conditions ( Colla et al., 2010 ; Estañ et al., 2005 ; Fernández-Garcia et al., 2004 ). Grafting tomato provides advantages by combining genotypes that have high yield or high quality but are sensitive to salinity stress with rootstocks that have higher

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Sameer Pokhrel, Bo Meyering, Kim D. Bowman, and Ute Albrecht

commence until the 19th century ( Mudge et al., 2009 ). The most used rootstocks for grafting before the 1970s were sour orange ( Citrus aurantium ) and rough lemon ( Citrus ×jambhiri ). As the importance of rootstocks for citrus production was recognized

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Hisayuki Kudo and Takeo Harada

, because most fruit trees and many vegetables are grafted ( Lee, 1994 ). So we grafted potato ( Solanum tuberosum L.) scions onto Me tomato rootstock to test whether the RNA molecule can move from Me tomato and whether it alters the potato leaf

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Ismail A. Hussein and Donald C. Slack

The effect of three vigor-control apple (Malus domestics Borkh.) rootstock (seedling, MM.106, and M.7a) on fruit diameter of three cultivars ('Red Delicious', `Granny Smith', and `Gala') was studied over two growing seasons (1990-91) in the arid climate of Willcox, Ariz. Daily fruit growth rate (DFGR) and effective fruit growth period (EFGP) data indicate cultivar differences in DFGR as well as EFGP. Cultivars with a high DFGR had a relatively shorter EFGP. Rootstock had no significant effect on EFGP. Cultivar x rootstock interaction on fruit diameter was significant for DFGR, but not for EFGP. `Red Delicious' and `Granny Smith' trees produced larger fruits on MM.106 and M.7a than on seedling rootstock. For `Gala', there was no significant effect of all rootstock on fruit diameter.

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G.E. Boyhan, J.D. Norton, and J.A. Pitts

The dwarfing characteristics of St. Julien and Pixy rootstocks, measured by shoot growth, were evident with `AU-Amber' and `AU-Producer' plum (Prunus salicina Lindl.) scions. Dwarfing did not occur with `AU-Rubrum'. Trunk cross-sectional area (TCA) was reduced with `AU-Amber', `AU-Producer', and `AU-Rubrum' scions on St. Julien and Pixy rootstocks. After 3 years, tree survival was 94% for Lovell; 89%, Halford; 57%, Nemaguard; 75%, Nemared; 83%, St. Julien; and 47%, Pixy. Tree survivability was significantly lower on Nemaguard and Pixy rootstocks than on Lovell and Halford. Multiple regression of total shoot growth, TCA, and survivability against foliar nutrient content resulted in the following significant equations: 0.460Mg - 0.210Mn, 0.236B - 0.487Mn, and 0.359N + 0.398Ca - 0.267P - 0.360Fe for each, respectively. Growth, survivability, and foliar nutrient content are significantly affected by rootstock in plum production.