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W.M. Randle and M.L. Bussard

concentration; TRS, total reducing sugars; WSC, water-soluble carbohydrates. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to

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Sofia Caretto, Angelo Parente, Francesco Serio, and Pietro Santamaria

into sink organs ( Bergmann, 1992 ; Marschner, 1995 ). In muskmelon, fruits from plants receiving weekly foliar/spray K applications matured 2 d earlier and had significantly higher soluble solid concentration, total sugar, ascorbic acid (vitamin C

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Philipp W. Simon

Four carrot populations with low total sugar/low reducing sugar concentration, low total sugar/high reducing sugar concentration, high total sugar/low reducing sugar concentration, and high total sugar/high reducing sugar concentration were compared for pH 4.5 invertase, pH 7.5 invertase, sucrose synthase, and sucrose phosphate synthase activity. Invertase activities correlated well with reducing sugar concentration. Sucrose synthase and sucrose phosphate synthase activities were low in all populations. Total sugar level was not well-correlated with the activity of any enzyme measured. Developmental analysis indicated some reduction in enzyme activity as roots grew.

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Andrew Merchant

-field detection and mitigation of water availability. More recently, significant and systematic changes in phloem sugar composition have also been detected ( Merchant et al., 2010a , 2010b , 2011 ) to levels that would have a significant influence on π

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Bruce W. Wood

.e., “on” year of AB cycle) are likely exposed to different phytohormonal environments than are primordia of induced buds on light cropload trees (i.e., “off” year of AB cycle). This is also likely true for sugar concentration within the environment of the

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Mingxia Wen, Peng Wang, Weiqin Gao, Shaohui Wu, and Bei Huang

Instrument Co. Ltd., Beijing, China) was used to determine the concentration of Se in the filtrate ( Liu et al., 2017 ). The content of soluble solids (TSS) in the fruits was determined using a hand saccharimeter. The soluble sugar content was determined

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Kyle M. VandenLangenberg, Paul C. Bethke, and James Nienhuis

associated with organic acids, bitterness is often the result of phenolic compounds, saltiness is attributable to sodium or potassium, and sweetness is the result of sugars, including fructose, glucose, and sucrose ( Sims and Golaszewski, 2003 ). Sugars not

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Hui-juan Zhou, Xia-nan Zhang, Ming-shen Su, Ji-hong Du, Xiong-wei Li, and Zheng-wen Ye

traits of fruit quality and is primarily dictated by the concentration of sugars ( Kader, 2008 ; Zhou et al., 2018 ). Regulating fruit sugar metabolism has become an important method of maintaining the quality of postharvest peach fruit ( Zhu et al

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Sachiko Kawamura, Kyoko Ida, Masako Osawa, and Takashi Ikeda

. Triploid cultivars tended to have higher soluble solid contents (Brix) than diploids ( Maynard et al., 2002 ; Pardo et al., 1997 ). Seedless fruits induced by γ-irradiated pollen had significantly higher sugar content than seeded fruits ( Moussa and Salem

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Wesley Gartner, Paul C. Bethke, Theodore J. Kisha, and James Nienhuis

content. In contrast, many other vegetables are harvested when they are immature and have high sugar and moisture contents and high rates of respiration. Thus, chemical constituents can change quickly, often in a matter of hours after harvest. Culinary