Auto-organização da vegetação de caatinga em áreas salinizadas no município de Petrolina-PE

Santos, Antônio Marcos dos; Souza, Robério Ferreira de; Castro, Francelita Coelho

doi:10.14808/sci.plena.2018.085401

Cited by 7 publications

(10 citation statements)

References 12 publications

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“…The large representation of mainly nectariferous species reported in the present study corroborates the results obtained by Santos et al (2006b) in the Caatinga, as well as other studies in other vegetation types, such as Viana et al (2006) for restinga formations and Lopes et al (2016) for the Cerrado. For the latter studies, there might not be Regarding the species of Senna reported by us, Moura et al (2018) highlight that due to the genus' poricidal anthers, pollen is their only floral resource.…”

Section: Diversity Of the Bee Florasupporting

confidence: 92%

“…The determination of plant species with beekeeping importance was made through direct observations of bee foraging in the field and also based on the literature (Aguiar et al 2002;Pereira et al 2006;Santos et al 2006b;Vidal et al 2008;Marques et al 2011;Maia-Silva et al 2012;Nascimento et al 2014;Silva et al 2014b;Salis et al 2015;Salis et al 2017). Plant species with beekeeping importance were identified and grouped into a checklist with their respective floral resources (pollen/nectar/oil) identified based on the specialized literature (Pedro & Camargo 1991;Oliveira et al 1998;Aguiar et al 2002;Agostini & Sazima 2003;Aguiar et al 2003;Costa et al 2006;Machado & Lopes 2006;Pereira et al 2006;Santos et al 2006a;Santos et al 2006b;Viana et al 2006;Polatto et al 2007;Silva et al 2007;Vidal et al 2008;Mendonça et al 2008;Ramalho & Rosa 2010;Modro et al 2011;Moreira & Bragança 2011;Maia-Silva et al 2012;Nascimento et al 2014;Silva et al 2014a;Costa et al 2015;Salis et al 2015Salis et al , 2017Saturni et al 2015;Guimarães-Brasil et al 2017;Melo 2019;Pinto...…”

Section: Collection and Processing Of Botanical Specimensmentioning

confidence: 99%

“…When comparing the diversity of species recorded by botanical families in this study with other floristic surveys in the State of Bahia (Nascimento et al 2014;Carvalho & Marchini 1999;Viana et al 2006) or with other studies regarding the interaction between plants and bees (Aguiar 2003;Milet-Pinheiro & Schlindwein 2008), one can note that Fabaceae, Asteraceae, Malvaceae, Rubiaceae and Euphorbiaceae are among the most representative families with beekeeping importance. In areas of Caatinga, species of these families are regarded as excellent suppliers of trophic resources to bees (Nascimento et al 2014;Costa et al 2015;Machado & Lopes 2006;Santos et al 2006b). According to Salis et al (2015;, some plant species from Fabaceae are regarded as having beekeeping potential due to offering nectar and pollen for extensive flowering periods.…”

Section: Diversity Of the Bee Floramentioning

confidence: 99%

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Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil

et al. 2023

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The aim of this study was to identify plant species visited by Apis mellifera L. in honey producing areas with typical Caatinga vegetation in the State of Bahia, as well as morphologically characterize pollen grains of the most representative species. Flowering specimens were collected from both areas, herborized, identified and deposited at the HUNEB herbarium. Analyses of floristic similarities were performed between eleven municipalities close to the study areas. Pollen was collected from all specimens, acetolyzed, measured, statistically analyzed, morphologically described, and photographed in light microscopy. Of the total of species recorded, 67.46 % were regarded as having beekeeping importance, with the richest botanical families being Fabaceae, Malvaceae and Asteraceae. Additionally, 37.5 % of the recorded species were herbs. The analyzed municipalities showed 84 % of floristic similarity. Of the total species recorded with visits by A. mellifera, 25.52 % had their pollen grains already described in the literature as monads, tetrads and polyads; isopolar, apolar and heteropolar; and mostly prolate spheroidal shape. Sizes varied from small to large, and the amb circular was predominant. The exine ornamentation was greatly diversified, varying from psilate to echinate. The obtained data corroborate the palynological knowledge of plants regarded as having beekeeping importance within the Caatinga.

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Section: Diversity Of the Bee Florasupporting

confidence: 92%

Section: Collection and Processing Of Botanical Specimensmentioning

confidence: 99%

Section: Diversity Of the Bee Floramentioning

confidence: 99%

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Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil

et al. 2023

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“…These studies pointed out important considerations on seed germination conditioning. However, studies comparing saline stress tolerance between species should be portrayed since soil salinization in the Caatinga can negatively affect colonization dynamics of native plant communities, especially in areas at risk of desertification (SANTOS; SOUZA; CASTRO, 2018).…”

Section: Introductionmentioning

confidence: 99%

Germination of Cactus Seeds Under Saline Stress

Silva

Azerêdo

2022

Rev. Caatinga

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Cactus seeds in seasonal dry tropical forests are subject to several stressors, such as salt stress which limits imbibition and therefore germination. Thus, this study aimed to compare germination performance of Cereus jamacaru subsp. jamacaru and Pilosocereus pachycladus subsp. pernambucoensis seeds under salinity conditions. To this end, NaCl and KCl solutions were used in the following osmotic potentials: 0.0 (control),-0.2,-0.4,-0.6,-0.8,-1.0, and-1.2 MPa. Seeds were placed to germinate at 25 °C and 12-hour photoperiod. The number of germinated seeds was counted daily for 21 days after root protrusion. The variables analyzed were: water content, germination, normal seedlings, germination speed index, and average germination time. The experimental design was completely randomized, following a 2 × 7 factorial scheme (species × osmotic potential) for each saline source. Water restriction and ionic effect caused by salts favored seed germination and vigor in both species at-0.2 and-0.4 MPa. However, from-0.8 MPa onwards, germination decreased significantly for both salts. Seeds of C. jamacaru subsp. jamacaru and P. pachycladus subsp. pernambucoensis were tolerant to salt stress since they germinated up to-0.8 MPa (NaCl) and-1.2 MPa (KCl). The latter occurred only for P. pachycladus subsp. pernambucoensis.

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“…Soil salinization is a frequent problem in arid and semi-arid ecosystems of the globe, which can negatively influence the dynamics of the native plant community (Santos et al 2018). The development in environments with these characteristics depends on the ability of plant species to adapt to negative osmotic potentials due to high salt concentrations (Cabot et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Gibberellic acid provides greater tolerance to saline stress in cactus seed germination

Lima¹,

Oliveira²,

Meiado³

2020

Commun. Plant Sci.

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It is important to understand the ecophysiological behavior and develop techniques applicable to conservation measures of species that inhabit arid and semi-arid ecosystem and are exposed to adverse environmental conditions. The objective of this study was to evaluate the effects of gibberellic acid (GA3) application during seed germination under saline stress conditions of a cactus. Pilosocereus gounellei susbp gounellei seeds were submitted to NaCl saline solutions at osmotic potentials of 0.0,-0.3,-0.6 and-0.9 MPa. For each osmotic potential, GA3 concentrations of 0, 100, 200 and 300 ppm were used. The results indicated that salt stress reduces germination percentage and synchronization as seeds are submitted to more negative osmotic potentials, as well as delaying germination time. However, this negative effect of NaCl was reversed when the seeds were subjected to the specific concentration of 100 ppm of gibberellic acid. Therefore, our study demonstrated that the application of GA3 at specific concentration improves the germinative metabolism of cactus seeds and promotes the acquisition of tolerance to saline stress conditions by increasing germinability, reducing germination time and increasing synchronization, thus representing a viable technique for seed germination and seedlings production under adverse environmental conditions. Highlighted Conclusions 1. The application of GA3 at specific concentration improves the germinative metabolism of cactus seeds and promotes the acquisition of tolerance to saline stress conditions. 2. The application of GA3 represents a viable technique for seed germination and seedlings production under adverse environmental conditions.

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Auto-organização da vegetação de caatinga em áreas salinizadas no município de Petrolina-PE

Cited by 7 publications

References 12 publications

Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil

Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil

Germination of Cactus Seeds Under Saline Stress

Gibberellic acid provides greater tolerance to saline stress in cactus seed germination

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