Dormancy overcoming and germination test in Piptadenia stipulacea (Benth.) Ducke
            seeds

Benedito, Clarisse Pereira; Ribeiro, Maria Clarete Cardoso; Paiva, Emanoela Pereira de; Medeiros, Hohana Lissa de Sousa

doi:10.5935/1806-6690.20190040

Cited by 6 publications

(3 citation statements)

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“…Seed germination occurs only within a minimum and maximum temperature limits, with the ideal value being that at which the maximum germination is obtained the fastest (Bewley et al, 2013;Marcos-Filho, 2015;Correa et al, 2020). Ambient conditions between 20 and 30 °C are indicated for seed germination of several tropical and subtropical forest species (Silva et al, 2016;Ataíde et al, 2017;Benedito et al, 2019). In those circumstances, deterioration reactions due to high temperatures (45 °C) do not take place during germination, thus preventing metabolism changes, cell damages (membrane degradation), and alterations in essential biomolecules, remarkably nucleic acids (DNA deterioration), lipids (lipid peroxidation), and proteins (protein denaturation and enzyme inactivation) (Bewley et al, 2013;Önder et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

et al. 2020

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Erythrina velutina Willd. (Fabaceae) is a tree species that bears social, ecological, and economic importance for northeastern Brazil, a region with frequent temperature variations. The objective of this work was to evaluate the mobilization of reserves during seed germination and seedling establishment of E. velutina at different temperatures, and how these mechanisms are affected in a thermal-stress situation. The seeds germinated at 5, 15, 25, 35, and 45 °C, and the physiological and biochemical aspects of reserve mobilization (starch, lipids, and total proteins) were assessed during seedling establishment. Germination, vigor, and the mobilization of reserves from the cotyledons to the embryonic axis are affected according to the incubation temperature. The temperature of 25 °C favors the mobilization of reserves during seed germination and seedling establishment in E. velutina. In a situation of thermal stress, high temperatures affect the establishment of the seedlings, whereas low temperatures compromise the mobilization of reserves.

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Section: Resultsmentioning

confidence: 99%

Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

et al. 2020

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“…this method's applicability as a better response in the germination of dormant seeds of some tree species, such as Piptadenia stipulacea (Benth.) Ducke, Cassia fi stula L. and Cassia leptophylla Vogel (Padilha et al, 2018;Benedito et al, 2019;Cruz et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

GERMINATIVE PERFORMANCE OF MULUNGÚ SEEDS (Ormosia grossa Rudd) AFTER DORMANCY OVERCOMING

et al. 2021

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Ormosia grossa Rudd is an Amazonian species that presents bicolor seeds, allowing its exploration for handicraft and decoration making. This paper aimed to analyze the influence of different methods to overcome dormancy on the germinative performance of Ormosia grossa seeds. To conduct the experiment, the following treatments were established: T1= scarification with 80-grit sandpaper and water immersion at room temperature for 24 hours; T2= puncturing and water immersion at room temperature for 24 hours; T3= scarification with 80-grit sandpaper; T4= puncturing; T5= immersion in water heated to 80 ºC for five minutes, and T6= Control - seeds without any treatment. The seeds germinate slowly and irregularly. Depending on the treatment, germination started between 10 and 32 days and, if there is no adequate pre-germinative treatment to overcome dormancy, it can exceed such time. The phytomass performance and seedling lengths were superior in the T1 and T2 treatments. The scarification by abrasiveness and puncturing treatments are efficient to overcome dormancy, thus increasing the speed (3.76 and 3.12) and germination percentage (98% and 96%) after ten days. The control was 0.01 (IVG), and germination of 37%. Therefore, it is recommended the method of scarification with sandpaper followed by seed imbibition in water at room temperature for 24 hours, as it provides the best seedling performance and germination.

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“…These pods were opened manually for the removal of seeds, which were stored in plastic bags and kept under refrigeration (Benedito et al 2011). To overcome seed coat-imposed dormancy, seeds were mechanically scarified in the region opposite to the hilum (Benedito et al 2008). As determined by previous tests, seeds were washed in a diluted solution of commercial detergent (1:500), rinsed in running tap water, and surface-sterilized with 70% (v/v) ethanol for 30 s followed by 0.25% (w/v) NaClO for 3 min.…”

Section: Plant Materialsmentioning

confidence: 99%

Reserve mobilisation exhibits a biphasic pattern during seedling establishment in the Caatinga pioneer species Pityrocarpa moniliformis

et al. 2023

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Reserve mobilisation and metabolite utilisation were characterised during seed germination and seedling establishment in Pityrocarpa moniliformis, an endospermic legume from Caatinga. Seeds were germinated under controlled conditions for four days and seedlings were transferred to hydroponics and maintained at a greenhouse during four days. Samples were collected at distinct physiological stages and reserves, metabolites, and enzymatic activities were determined in different seedling parts. Galactomannans stored in the endosperm and non-reducing sugars accumulated in the cotyledons were mobilised from seed germination to hypocotyl emergence. During these processes, the accumulation of reducing sugars in the endosperm coincided with an increase in the starch content in the cotyledons and seedling axis, indicating that sugars released from galactomannans may have been utilised in starch biosynthesis. Starch and storage protein mobilisation in the cotyledons occurred later, from hypocotyl elongation to cotyledon expansion. Starch degradation possibly supported the accumulation of starch and soluble sugars in the root, while storage protein hydrolysis was associated with cotyledon greening and first leaf emergence. Accordingly, reserve mobilisation exhibits a biphasic pattern, enabling fast seedling establishment as a physiological strategy to ensure environmental colonisation.

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Dormancy overcoming and germination test in Piptadenia stipulacea (Benth.) Ducke seeds

Cited by 6 publications

References 0 publications

Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

Molecular aspects during seed germination of Erythrina velutina Willd. under different temperatures (Part 1): reserve mobilization

GERMINATIVE PERFORMANCE OF MULUNGÚ SEEDS (Ormosia grossa Rudd) AFTER DORMANCY OVERCOMING

Reserve mobilisation exhibits a biphasic pattern during seedling establishment in the Caatinga pioneer species Pityrocarpa moniliformis

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