pH do Exsudato na Avaliação da Viabilidade de Sementes de Araucaria angustifolia

Araldi, Cristhyane Garcia; Coelho, Cileide Maria Medeiros

doi:10.1590/2179-8087.082314

Cited by 8 publications

(5 citation statements)

References 19 publications

(31 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Regarding the analysis of pH (Figure 1b), there were no differences between the treatments, and their influence on seed germination was not verified, corroborating with the results obtained for P. alata Curtis seeds [22]. However, these results diverge from those obtained with Araucaria angustifolia seeds, which were at an advanced stage of deterioration [23].…”

Section: Resultssupporting

confidence: 73%

Performance of sweet passion fruit seeds submitted to pre-germination treatments

et al. 2020

View full text Add to dashboard Cite

Brazil is the world's largest consumer and producer of passion fruit (Passiflora spp.). Its fruit is widely accepted by consumers mainly in terms of natura consumption, juices, and medicines. However, these plants are spread mainly via seminiferous propagation, in which low and uneven seed germination is verified. The objective of this work was to study seed performance and initial growth of Passiflora alata Curtis seedlings as a function of pre-germination treatments. Seeds of P. alata extracted from mature fruits harvested were used and manually extracted from the fruits, and the aryl was removed by rubbing in a stainless steel mesh sieve with quicklime, followed by drying in the shade on filter paper for 24 hours. The seeds were submitted to physical scarification and immersed in distilled water for 0; 24; 48; 72; 96; and 120 hours of stirring. The seed scarification method by cracking interferes negatively in the germination and initial growth of P. alata seedlings. Intact seeds had a higher percentage of germination as the stirring time of the seeds imbibed in water increased. The cracked seed treatment provided the highest averages when electrical conductivity was evaluated in the stirring time of 120 hours. Intact seeds immersed in distilled water with stirring for 120 hours provide greater germination and initial growth of P. alata Curtis seedlings.

show abstract

Section: Resultssupporting

confidence: 73%

Performance of sweet passion fruit seeds submitted to pre-germination treatments

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Therefore, viability was assessed using the tetrazolium test on 25 embryos/replicate, (according to methodology of Brazil 2009, with adaptations by Oliveira et al 2014), and exudate pH, according to methodology of Araldi et al (2015). Both viability tests were based on the identification of viable structures associated with tissues appearance.…”

Section: Seed Quality Analysis During Storagementioning

confidence: 99%

Establishment of post-harvest early-developmental categories for viability maintenance of Araucaria angustifolia seeds

Araldi

Coelho

2015

Acta Bot. Bras.

Self Cite

View full text Add to dashboard Cite

Araucaria angustifolia seeds are recalcitrant, and their metabolism remains high during storage. This research aimed to describe the initiation of germination in A. angustifolia seeds during storage in order to standardize the assessment of physiological quality and to promote seed conservation. Seeds were collected from two populations and stored for 270 days in the natural laboratory environment and cold chamber. Seeds were classified according to four early developmental stages: I -mature seeds; II -seeds with elongation along the embryonic axis; III -beginning of root protrusion; IV -advanced germination stage, with seedling shoots. After categorization, physical and physiological quality was assessed. In freshly collected seeds, only category I was observed. At 270 days, approximately 40% of seeds were in category III in laboratory conditions, while the maintenance in a cold chamber delayed germinative metabolism. Viability tests showed that seeds in categories III and IV were more susceptible to damage caused by storage.In conclusion, the percentage of viable A. angustifolia seeds depends on the development stage after collection. Seeds that have reached early developmental category III should be prioritized for propagation, while those remaining in categories I and II should be longer stored with periodic assessment for reduction in physiological quality.

show abstract

“…Nevertheless, some authors have pointed out the importance of the development/or adjustment of these fast tests for the different forest species, since the efficiency of procedures in the evaluation of physiological potential will depend on them (Lopes, Silva, & Vieira, 2013;Araldi & Coelho, 2015). This way, the objective of this research was to evaluate the potential use of the best water absorption pattern, container size and the need of breaking the tegument dormancy, for the application of the electrical conductivity test in small and large seeds of Acacia mangium, coming from commercial plantings of different ages, established in low yielding capacity soils on savannah areas of Roraima.…”

mentioning

confidence: 99%

Water absorption and improvement of methods for electrical conductivity test in acacia seeds

Oliveira

Smiderle

Paulino

et al. 2016

RBT

View full text Add to dashboard Cite

Abstract:Acacia is an important forest species of rapid growth whose seeds have tegument dormancy. In this work it was intended to characterize water absorption pattern after seed dormancy break, and to determine the amount of water, container size and the need of breaking the tegument dormancy, as to perform electrical conductivity test in small and large seeds of Acacia mangium (Fabaceae). The seeds were collected from 10, 8 and 6 years old trees established in poor yielding-capacity soils on savannah areas of Roraima, Brazil; seeds were classified in six lots concerning to seed size and tree age. Germination tests (50 seeds and four replications per lot) were carried out on germitest® paper maintained on gerbox at 25 °C. Imbibition was verified by seed weighing at different times (0, 2, 5, 8, 12, 16, 24, 36, 48, 60, 72, 84, 96 and 120 hours). The electrical conductivity test consisted of three experiments, distinguished by the amount of water used and by the container size in which seeds were immersed. Seeds of A. mangium coming from 10 years old trees presented increased germination percent and germination speed than seeds of six-year old trees. Small seeds presented increased in electrical conductivity and water absorption until 120 hours when compared to large seeds. The immersion of seeds of A. mangium in 40 mL of distilled water into 180 mL plastic containers, after dormancy break, it is indicated for the determination of electrical conductivity test. The ratio of electrolytes by seed mass, after 24 hours of immersion in water, turns electrical conductivity test more accurate concerning A. mangium seeds. Rev. Biol. Trop. 64 (4): 1651-1660. Epub 2016 December 01.

show abstract

pH do Exsudato na Avaliação da Viabilidade de Sementes de Araucaria angustifolia

Cited by 8 publications

References 19 publications

Performance of sweet passion fruit seeds submitted to pre-germination treatments

Performance of sweet passion fruit seeds submitted to pre-germination treatments

Establishment of post-harvest early-developmental categories for viability maintenance of Araucaria angustifolia seeds

Water absorption and improvement of methods for electrical conductivity test in acacia seeds

Contact Info

Product

Resources

About