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Abdul K. Janoudi and Irvin E. Widders

The effects of water deficit and fruiting on leaf gas exchange and dry-matter production and partitioning in cucumber (Cucumis sativus L.) plants were evaluated in greenhouse and field experiments. Fruiting plants had higher photosynthetic rates (15.8 μmol·m-2·s-1) than defruited plants (12.7 μmol·m-2·s-1). Although stomatal conductance was lower in defruited plants, it accounted for only ≈35% of the assimilation rate (A) reduction. Under water deficit, defruiting caused a similar response in A, even though A was only ≈50% of that in watered plants. Fruiting and water deficits limited vegetative plant dry weight and total leaf area. In field experiments, removing flowers from the first four or eight nodes resulted in a higher count and fresh weight at harvest of only those pickling cucumber fruit that were irrigated.

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Eduardo J. Chica and L. Gene Albrigo

Under natural conditions, citrus ( Citrus sp.) trees are induced to flower by seasonal exposure to either cool ambient temperatures (5 to 20 °C) or water deficit ( Cassin et al., 1969 ; Moss, 1969 ). In subtropical regions where citrus are grown

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Sheng Xu, Mingmin Jiang, Jiangyan Fu, Lijian Liang, Bing Xia and Ren Wang

Water deficit is considered as a major environmental factor that influences various physiological and biochemical processes in plants ( Tezara et al., 1999 ). Plants can exhibit either drought escape or drought resistance mechanisms, with resistance

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Myung-Min Oh, Edward E. Carey and C.B. Rajashekar

mild water stress, but increased when plants were subjected to more severe water stress at 4 d of water deficit, as indicated by leaf water potential. Fig. 1. Changes in ( A ) total phenolic concentration [gallic acid equivalent (GAE)] and ( B

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Peter Alem, Paul A. Thomas and Marc W. van Iersel

curves are based on final target heights ± 2.54 cm. Horizontal arrows indicate times the plants were exposed to a water deficit (substrate water content of 0.20 m 3 ·m −3 ). The 43.2-cm target height treatment was subjected to the shortest duration of WD

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Travis Culpepper, Joseph Young, David T. Montague, Dana Sullivan and Benjamin Wherley

-induced dormancy as a coping mechanism during extended periods of water deficit stress ( Zhang et al., 2019 ). Recovery and regrowth from drought-induced dormancy would be expected as rainfall or irrigation returned, as long as soil conditions did not restrict root

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Mengmeng Gu, James A. Robbins and Curt R. Rom

North Carolina. Paper birch grows best where provided with ample moisture and is adapted to a variety of soils ( Farrar, 1995 ). Water deficit is a severe environmental stress to paper birch in the landscape and nursery production. Water-deficit stress

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Camilo Escalante-Magaña, Luis F. Aguilar-Caamal, Ileana Echevarría-Machado, Fátima Medina-Lara, Lucila Sánchez Cach and Manuel Martínez-Estévez

al., 2019 ). Water deficit is a critical abiotic factor that affects the growth and productivity of plants, especially in arid or semiarid regions of the planet ( Bodner et al., 2015 ). This type of stress has become one of the main negative factors

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Roger Kjelgren, Lixue Wang and Daryl Joyce

., 2003 ), and thus are a rich source of drought-tolerant plants for water-wise landscaping. Characterizing herbaceous wildflower water deficit stress response mechanisms can inform selection of drought-tolerant herbaceous perennial species appropriate for

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Peter Alem, Paul A. Thomas and Marc W. van Iersel

water deficit (WD) treatments as monitored using height tracking curves for 77 d. Growth retardants and WD were applied to control stem elongation, with the aim of reaching a final target height of 43.5 ± 2.5 cm. The two sigmoidal curves indicate the