Water relations of Caatinga trees in the dry season

Desenvolvimento inicial de Erythrina velutina sob restrição hídrica

“…Em plantas caducifólias a queda de folhas está relacionada ao efeito do estresse hídrico. Esse fenômeno é observado em Mimosa caesalpiniifolia, Caesalpinia pyramidalis, Auxemma oncocalyx, Caesalpinia ferrea, Calliandra spinosa, Tabebuia aurea (Dombroski et al, 2011), Artocarpus heterophyllus e Annona squamosa (Rodrigues et al, 2010). Ao comparar o crescimento de mudas de E. velutina com as relações hídricas, Silva et al (2010) verificaram um menor número de folhas em plantas cultivadas nos tratamentos com apenas 25% da capacidade de campo.…”

Physiological and Biochemical Responses of Semiarid Plants Subjected to Water Stress

“…These species might maintain their water statuses similar to individuals in group II, but they might also have deeper root systems. (IV), Tabebuia caraiba had the highest Ψw at predawn and no significant decrease at midday, possibly indicating a combination of good stomatal control of water loss and a deeper root system (Dombroski et al, 2011). Leaf water relations induced by NaCl and PEG-6000 were assessed in Ipomoea pes-caprae; the decrease in the nutrient solution water potential (Ψ sol ) was initially stressful and caused turgor loss Brazilian landrace, but 2 d after the beginning of the experiment, the plants that experienced a reduction of -0.5 MPa in Ψ sol could adjust osmotically (Sucre & Suaréz, 2011).…”

“…Water relations in Caatinga trees were evaluated by Dombroski et al (2011). The species studied were classified into four groups.…”

<i>Spondias tuberosa</i> trees grown in tropical, wet environments are more susceptible to drought than those grown in arid environments

“…There are few reports describing the physiological behavior of plants under arid conditions and their interactions with the environment (Campos et al, 2012;Cattivelli et al, 2008;Dombroski et al, 2011;Lima Filho, 2004). For example, Lima Filho (2004) observed that the environmental difference between the dry and rainy seasons is the primary factor that influences the course of gas exchange in umbu trees under semiarid conditions.…”