Acúmulo de solutos orgânicos em mudas de Ceiba glaziovii (Kutze) Kum. em resposta à seca intermitente

Santos, J. L.; Oliveira, Maria Fernanda da Costa; Silva, Elizamar Ciríaco da

doi:10.14808/sci.plena.2020.011201

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…The negative effects of drought on plants inhabiting Caatinga areas during the initial growth relative to reductions in height, number of leaves, stem diameter and biomass production [10,11,25,37,38] could demonstrate that, to some extent, such changes may help the species survive in semi-arid areas. Lower growth pattern in length, fewer and smaller leaves enables adapted plants to survive under conditions of limited water availability through better water management [10].…”

Section: Discussionmentioning

confidence: 99%

Physiological responses of Triplaris gardneriana Wedd. seedlings (Polygonaceae) under intermittent drought

et al. 2022

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Triplaris gardneriana Wedd is a deciduous riparian tree occurring in areas with different climatic conditions in Brazil, from the rainforest to the tropical dry forest. An increase in global temperature and drought events can change the growth pattern and establishment of the species. To evaluate the effects of intermittent drought on the growth of T. gardneriana seedlings, an experiment was performed using seedlings with one month old subjected to three water treatments (daily irrigation as control, and intermittent drought through cycles of water suppression of seven (S7) and 14 days-intervals (S14) between watering. Growth, biomass production and partitioning, relative water content (RWC), the accumulation of organic solutes, protoplasmic integrity and phenotypic plasticity index (PPI) were evaluated for a better understanding about its drought tolerance level. Intermittent drought severely affected plants growth in S14 plants, showing lower plant height, number of leaves, leaf area, and dry biomass. RWC was reduced, while carbohydrates and proline contents increased in response to drought stress. Protoplasmic damage increased electrolyte leakage in plants subjected to severe stress. However, T. garderiana demonstrated moderate tolerance to water deficit. The plastic changes observed were more physiological than morphological. Therefore, T. gardneriana seems to be a moderately tolerant species to intermittent drought.

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Section: Discussionmentioning

confidence: 99%

Physiological responses of Triplaris gardneriana Wedd. seedlings (Polygonaceae) under intermittent drought

et al. 2022

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“…Drought events that occur in arid and semi-arid regions have intensified due to global warming and intermittent rainfall, which has also affected humid and urban environments (Güneralp et al, 2015;Xu et al, 2019). These events, intense and frequent, accentuate declines on growth and plant yield (Silva et al, 2013;Santos Júnior et al, 2020), with negative consequences for the agricultural sector (Li et al, 2009;Lemos et al, 2014;Güneralp et al, 2015;Ramos et al, 2016). In this perspective, family farming suffers the most from these losses (Li et al, 2009;Lemos et al, 2014;Güneralp et al, 2015;Marengo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Discontinuous hydration improves germination and drought tolerance in Annona squamosa seedlings

Júnior

Freitas

Silva

2021

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The aim of this work was to determine if the discontinuous hydration of A. squamosa seeds benefit its seed germination and if the seedlings from these seeds have a greater tolerance to water deficit through the analysis of growth parameters. The experimental design was a completely randomized, in a 4x3 factorial, with four HD cycles in seeds (zero, one, two and three) and three water treatments (control with daily watering, and cycles of five and ten-intervals days between watering). Plant height, stem diameter, number of leaves, dry biomass, root/shoot ratio, leaf area, specific leaf area, and leaf area ratio were evaluated. Discontinuous hydration treatments benefited germination and promoted a better growth of the seedlings under water deficit cycles. The application of three HD cycles increased plant height, stem diameter, number of leaves, leaf area and dry matter of the seedlings compared to the other cycles. On the other hand, water suppression caused a reduction in the growth of A. squamosa, especially at ten-day intervals between watering. HD cycles in the seeds improved drought tolerance in the seedlings, mainly when three HD cycles are applied to the seeds, suggesting this is a good technique to produce seedlings better tolerant to environments with reduced water availability.

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Acúmulo de solutos orgânicos em mudas de Ceiba glaziovii (Kutze) Kum. em resposta à seca intermitente

Cited by 2 publications

References 18 publications

Physiological responses of Triplaris gardneriana Wedd. seedlings (Polygonaceae) under intermittent drought

Physiological responses of Triplaris gardneriana Wedd. seedlings (Polygonaceae) under intermittent drought

Discontinuous hydration improves germination and drought tolerance in Annona squamosa seedlings

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