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Russell Galanti, Alyssa Cho, Amjad Ahmad, and Javier Mollinedo

, 1992 ). Seasonal source–sink relationships between vegetative and reproductive growth also influence leaf N status; for example, developing fruits during the summer act as an N sink ( Fletcher et al., 2009 ). While it is known that increasing N supply

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Shanshan Seng, Jian Wu, Jiahui Liang, Fengqin Zhang, Qiuyan Yang, Junna He, and Mingfang Yi

carbohydrate, and also functions to balance source and sink metabolites ( Yu et al., 2015 ). Sucrose produced in leaves is transported into underground organs (new corm and cormels) where it is used for starch synthesis by AGPase. Starch synthesis and

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Justine E. Vanden Heuvel and Carolyn J. DeMoranville

.C. Vorsa, N. Poole, A.P. 1996 Fruit mass development in three cranberry cultivars and five production regions J. Amer. Soc. Hort. Sci. 121 680 685 Fernandez, G.E. Pritts, M.P. 1994 Growth, carbon acquisition, and source-sink relationships in ‘Titan’ red

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Thomas E. Marler

formation on large stem cuttings. The direct relationship between carbohydrate status at the time of stem excision and propagation success rates indicates that the inclusion of a plant physiologist with knowledge of source–sink relations may be a

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He Lisi, Su Jiale, Liu Xiaoqing, Li Chang, and Chen Shangping

Sucrose is the principal sugar in plants and plays a vital role in plant growth and development ( Rolland et al., 2006 ) by serving as a critical molecule for carbohydrate and energy flow from source organs to sink organs ( Salerno and Curatti, 2003

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Cheng Bai, Charles C. Reilly, and Bruce W. Wood

-associated composition likely differs depending upon relative proximity to sinks (e.g., shoots) and sources (e.g., roots). Nickel deficiency quantitatively alters xylem sap ureido-N composition in a manner similar to that observed in actively growing Ni-deficient pecan

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Xinwang Zhang, Ikuo Nakamura, and Masahiro Mii

. parodii Steere [= P. axillaris subsp. parodii (Steere) Cabrera ] with white flowers have also been proposed as a likely parent of garden petunias ( Sink, 1975 ). Thus, it was a common idea that the garden petunias have been bred through cross

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W. Roland Leatherwood, John M. Dole, and James E. Faust

plants and many other herbaceous species to increase branching and abscise sink tissues. Ethephon is lipophilic and, on entering the relatively more basic apoplastic environment, undergoes a degradation reaction releasing ethylene, Cl – , and H 2 PO 4

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Daniela Farinelli, Pierluigi Pierantozzi, and Assunta Maria Palese

. Also, competition among fruit is thought to be proportional to sink size, which in turn is related to fruit and seed mass, but not to fruit number ( Farinelli et al., 2002b ; Rosati et al., 2010 ). In many fruit growth models such as the “Peach” model

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C. Yang, D.Y. Jiao, Z.Q. Cai, H.D. Gong, and G.Y. Li

, enhance the partition of accumulates from source and sink, and reduce vegetative growth and improve yield of the field crops ( Zhang et al., 2009 ). However, effect of PGRs on yield and plant development varied from species to species ( Rademacher, 2015