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Thomas M. Gradziel, Bruce Lampinen, Joseph H. Connell, and Mario Viveros

combination of spurs and terminal shoots, including characteristic lateral dard-type shoots ranging from 5 to 20 cm in length ( Fig. 2 , inset). This bearing habit results in high productivity with an open tree architecture, which allows greater light

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Thomas Gradziel, Bruce Lampinen, Franz Niederholzer, and Mario Viveros

combination of spurs and terminal shoots. This bearing habit results in high productivity with an open tree architecture that allows greater light penetration and air circulation to the canopy interior and so lower blossom and foliar disease. Flowers are

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T. Auxt Baugher, J.R. Schupp, K.M. Lesser, and K. Hess-Reichard

string blossom thinner prototype were conducted in 2008 in six Pennsylvania orchards trained to open-center systems. Tree architecture included three to five scaffolds, and tree height and spread averaged 6 and 8 ft, respectively. The cultivars were Snow

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Gerardo Lopez, Romeo R. Favreau, Colin Smith, and Theodore M. DeJong

). However, PEACH did not simulate changes in architecture over time. Ignoring interactions between tree architecture and carbon allocation was the major limitation of the PEACH model ( Le Roux et al., 2001 ). To understand how peach trees grow, it is

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D.M. Glenn, T. Tworkoski, R. Scorza, and S.S. Miller

; Tworkoski and Glenn, 2010 ), subsequently reducing overall yield. A third approach to develop high-density peach production systems is the use of peach cultivars with tree architectures that suit high planting densities. Scorza (1984 , 1988) and Scorza

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Benjamin D. Toft, Mobashwer M. Alam, John D. Wilkie, and Bruce L. Topp

productivity and profitability ( Robinson, 2003 , 2011 ). The success of intensive systems depends on balancing the management of tree architecture and yield. Early yields are mainly under the influence of the number of trees per hectare and of tree training

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Xiaobo Song, Shengke Xi, Junpei Zhang, Qingguo Ma, Ye Zhou, Dong Pei, Huzhi Xu, and Jianwu Zhang

Administration (under accession no. S-SV-JH-014–2018). Table 1. Performance of ‘ZNS’ cutting seedlings at different sites. Description and Performance ‘ZNS’ has strong vigor, compact tree architecture, and strong sprouting ability. Bark is light gray and split

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José Egea, Manuel Rubio, José A. Campoy, Federico Dicenta, Encarna Ortega, María D. Nortes, Pedro Martínez-Gómez, Antonio Molina, Antonio Molina Jr, and David Ruiz

Spanish cultivars. They have a moderate need for thinning to obtain good fruit sizes. Tree architecture greatly facilitates pruning (reduced branching habit). Plum pox virus resistance. Sharka disease caused by the PPV is a serious limiting factor for

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David Ruiz, Manuel Rubio, Pedro Martínez-Gómez, Jesús López-Alcolea, Federico Dicenta, Encarna Ortega, María Dolores Nortes, Antonio Molina, Antonio Molina Jr., and Jose Egea

. Fig. 1. Pedigree of apricot cultivars Cebasred and Primorosa. Description Tree characteristics Tree description. Trees are vigorous with medium-upright habit for ‘Cebasred’ and moderately spreading habit for ‘Primorosa’ trees. This tree architecture

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José Egea, Jose A. Campoy, Federico Dicenta, Lorenzo Burgos, Jose L. Patiño, and David Ruiz

productive shoots with a high fruit set. In both cultivars, the tree architecture greatly facilitates pruning (reduced branching habit). ‘Estrella’ and ‘Sublime’ are characterized by optimal productivity levels in comparison with traditional Spanish apricot