Physiological responses of apricot plants grafted on two different rootstocks to flooding conditions
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Research GroupGrupo de investigación Suelo-agua-planta
Knowledge AreaProducción Vegetal
SponsorsThe authors are grateful to Dr Pedro Rodriguez from INCA (La Habana, Cuba) for help with the root hydraulic conductivity measurements. The study was supported by CICYT (HID1999-0951; AGL2000-0387-C05-04) grants to the authors.
PublisherGrupo de investigación Suelo-agua-planta
Bibliographic CitationDOMINGO, R., PÉREZ PASTOR, A., RUIZ SÁNCHEZ, M.C. Physiological responses of apricot plants grafted on two different rootstocks to flooding conditions. Journal of Plant Physiology, 159 (7): 725-732, 2000. ISSN 0176-1617
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The effects of soil flooding on plant water relations and vegetative growth was studied in potted two-year-old apricot plants (Prunus armeniaca L., cv. Búlida) grafted on two different rootstocks: Pollizo prune (P. insititia L.) (P) and Real Fino apricot (RF). Plants were submitted outdoors to three treatments: T0, not flooded (control), and two flooded treatments for 3 (T1) and 6 (T2) days. Apricot water relations were seen to be adversely affected from first day of the flooding onwards. These effects were more pronounced in Búlida/RF than in Búlida/P plants. The T1 plants developed an early stomatal regulation (decrease in leaf conductance (gl)), which prevented leaf tissue dehydration, together with decrease in net photosynthesis (Pn) and the increase in resistance to water flow (R(p+s)). This early gl and Pn response suggests that porometric and/or photosynthetic changes are reliable bio-indicators of the altered behaviour caused by flooding in apricot plants. The lowest ...
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