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oai:recercat.cat:20.500.12327/4892025-10-22T11:05:26Zcom_2072_4428com_2072_4427col_2072_487898

00925njm 22002777a 4500 dc Prats-Llinàs, Maria Teresa author García-Tejera, Omar author Marsal, Jordi author Girona, Joan author 2019-02-15 Water stress responses during the post-harvest period were evaluated in a Chardonnay container-grown grapevines grafted onto 1103 Paulsen rootstock. The irrigation treatments were: a control treatment (C) (irrigated to match ETC demands) and a water stress treatment (WS) (irrigated when midday stem water potential reached a -1.1 MPa threshold). Photosynthesis, biomass and carbohydrate content were determined on five vines in each treatment on specific dates, from harvest until leaf fall. Stressed vines reduced leaf area due to defoliation, while well-watered vines had a higher carbon accumulation allowing the formation of new roots during the post-harvest period. No dry biomass accumulation was observed in the shoot and trunk organs after fruit harvest. Starch concentration and content were not affected by water stress. At the end of the experiment, starch concentrations were lower in the shoots and trunk than in the roots. Water stress induced a variation on biomass accumulation between above and below ground perennial organs, with the roots being the main organs in which biomass and starch concentrations were accumulated and kept, respectively. Prats-Llinàs, Maria Teresa, Omar García-Tejera, Jordi Marsal, and Joan Girona. 2019. "Water Stress During The Post-Harvest Period Affects New Root Formation But Not Starch Concentration And Content In Chardonnay Grapevine (Vitis Vinifera L.) Perennial Organs". Scientia Horticulturae 249: 461-470. Elsevier BV. doi:10.1016/j.scienta.2019.02.027. 0304-4238 http://hdl.handle.net/20.500.12327/489 https://doi.org/10.1016/j.scienta.2019.02.027 Water stress during the post-harvest period affects new root formation but not starch concentration and content in Chardonnay grapevine (Vitis vinifera L.) perennial organs