Gas exchange, phisiological indexes and ionic accumulation in Annona emarginata (Schltdl.) H. Rainer seedlings in nutrients solution

Báron, Daniel; Ferreira, Gisela; Rodrigues, João Domingos; Boaro, Carmen Sílvia Fernandes; Macedo, Ana Cláudia

doi:10.1590/s0100-29452013000200005

Cited by 9 publications

(4 citation statements)

References 34 publications

(22 reference statements)

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“…The propagation method most used in Annonaceae is grafting, in which one rootstock is formed from seeds (BARON et al, 2013, LEMOS et al, 2013. Thus, it is a constant search for alternative species such as Annona diversifolia Saff and Annona purpurea Moc & Sessé ex Dunal, that are potential species to be used in the expansion of production areas as rootstock to other Annonaceous, so as for in natura consumption, food industry or to discoveries of new molecules for pharmaceutical industry (LUNA-CAZARES et al, 2006;LOBO et al, 2007;DE-LA-CRUZ et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Water uptake by Annona diversifolia Saff. and A. purpurea Moc. & sessé ex dunal seeds (Annonaceae)

2014

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-Annonaceae seeds are known by presenting dormancy mechanisms, whose reports ranging from coating impermeable to the physiological dormancy. By this way, the present study aimed to evaluate water uptake in Annona diversifolia Saff and Annona purpurea Moc & Sessé ex Dunal seeds. For this study, seeds were placed under immersion in distilled water, and used four replicates of 25 seeds of each species, which were weighed during the 480 hours that were immersed. To determine the place of purchase of water, Annona diversifolia seeds were sealed with paraffin at different locations. Based on the results, seeds from both species reached the phases I and II of water uptake, which indicates they are not hard; however, germination (Phase III) was not reached. Annona diversifolia seeds completed Phase I with, 50h and Annona purpurea with 70h from imbibitions begin, which shows that even slowly, water is acquire. Index terms: Annonaceae, propagation, seed dormancy, imbibition. AQUISIÇÃO DE ÁGUA EM SEMENTES DE

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Section: Introductionmentioning

confidence: 99%

Water uptake by Annona diversifolia Saff. and A. purpurea Moc. & sessé ex dunal seeds (Annonaceae)

2014

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“…It justifies the higher E in plants with higher water availability detected in this study. We observed that carbon assimilation (C i ) values did not coincide with the alterations of g s and E. It indicates that, despite the stomatal opening, there was no increase in CO 2 input in leaves, which can be explained by changes in the photosynthetic apparatus due to water or nutrient availability for plants (Baron et al 2013). Photosynthesis is not only related to stomatal limitations but also nonstomatal limitations, such as the diffusion of CO 2 from intercellular spaces to the chloroplasts and biochemical limitations to photosynthetic efficiency (Salmon et al 2020).…”

Section: Gas Exchangementioning

confidence: 74%

Composted sewage sludge as an alternative substrate for forest seedlings production

Gabira¹,

Silva²,

Bortolheiro³

et al. 2021

iForest

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The production of forest seedlings with adequate morphological and physiological characteristics is essential for the success of plantations. Substrates and irrigation are the major factors determining seedlings' growth. Substrates made of urban and agricultural residues are a sustainable alternative to peatbased substrates. In this study, we evaluated how composted sewage sludge substrates affect the growth and gas exchange in seedlings of Cedrela fissilis Vell. Seedlings were produced under daily irrigation depths of 6, 9, and 12 mm, and on different substrates. The substrates were based on sewage sludge composted with Eucalyptus bark or sugarcane bagasse, and a commercial substrate based on peat, involving a double factorial design with 12 treatments (3 irrigation depths × 3 substrates). Both physical and chemical characteristics of substrates were analyzed, and morphological traits and gas exchanges of seedlings were measured. Sewage sludge-based substrates presented different characteristics according to the material it was mixed. Eucalyptus bark provided higher bulk density (0.19 g cm -3 ) and lower total porosity (75%) to the substrate, while sugarcane bagasse increased macroporosity up to 60%. Seedlings produced in sewage sludge-based substrates presented a height up to 17.8 cm and stem diameters of between 8.39-10.29 mm. Higher shoot and root dry mass was obtained in sewage sludge-based substrates with irrigation depth of 9 mm, which were 3.71 and 2.01 g, respectively. Photosynthetic carbon assimilation varied between 2.26 and 3.23 µmol CO2 m -2 s -1 , and water use efficiency varied from 2.058 to 3.395 µmol CO2 (mol H2O) -1 , with the highest values being obtained in seedlings produced in sewage sludge-based substrates with irrigation depth of 6 mm. Our results demonstrate that sewage sludgebased substrates are an efficient alternative to commercial peat-based substrates for seedling production.

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“…The experimental design was a randomized block with four blocks, each one with four plants. The cultivation was done in a greenhouse and Hoagland and Arnon n°2 was applied, diluted to 50% of its ionic strength, electrical conductivity (EC) of 1.0 miliSiemens cm -1 (300 ml per pot) and pH 5.5-6.5, according to Baron et al (2013).…”

Section: Methodsmentioning

confidence: 99%

Can early peroxidase quantification detect graft-compatible in anonaceous rootstocks?

Báron¹,

Amaro²,

Macedo³

et al. 2018

Afr. J. Agric. Res.

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This study aimed to quantify the class III peroxidase activity in young plants of different species belonging to Annonaceae botany family, with high potential as a rootstock, for early detection of graftcompatible atemoya (Annona x atemoya Mabb.). The experimental design was randomized block, that evaluated the species araticum-de-terra-fria (Annona emarginata (Schltdl.) H. Rainer 'variety terra-fria'), araticum-mirim (Annona emarginata (Schltdl.) H. Rainer 'variety mirim) and biribá (Annona mucosa (Schltdl.) H. Rainer), with rootstock potential, and atemoya (scion), which were divided into four blocks, each with four plants. The peroxidase was quantified on the stem before grafting. Statistical analysis showed that only the biribá presented different peroxidase activity compared to atemoya plants; and araticum-mirim and araticum-de-terra-fria were similar to atemoya plants. Thus, the peroxidase activity could not be possible or be used as a tool in the early diagnosis of the graft-compatible in atemoya combinations.

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Gas exchange, phisiological indexes and ionic accumulation in Annona emarginata (Schltdl.) H. Rainer seedlings in nutrients solution

Cited by 9 publications

References 34 publications

Water uptake by Annona diversifolia Saff. and A. purpurea Moc. & sessé ex dunal seeds (Annonaceae)

Water uptake by Annona diversifolia Saff. and A. purpurea Moc. & sessé ex dunal seeds (Annonaceae)

Composted sewage sludge as an alternative substrate for forest seedlings production

Can early peroxidase quantification detect graft-compatible in anonaceous rootstocks?

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