Universität zu Köln

da Silva, Alexandre Carneiro, Palmeira da Silva, Maiara Pilar, Zamith, Rayssa, Galetti, Gustavo and Marquez Pina-Rodrigues, Fatima Conceicao (2020). Osmotic treatment, growth regulator and rooter in Tabebuia roseoalba (RIDL.) Sandwith seeds for direct sowing. J. Seed Sci., 42. LONDRINA PR: ABRATES-ASSOC BRASILEIRA TECHNOLOGIA SEMENTES. ISSN 2317-1545

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Abstract

Direct seeding is a technology that reduces the costs of forest restoration projects and favors species which are difficult to establish for seedlings. The seeds osmotic treatment to accelerate and standardize germination and induce tolerance to environmental stresses may favor seedling establishment in field through direct sowing and contribute to the greater efficiency of this technique. With the purpose of favor seed germination and seedling establishment under direct seeding conditions in the field, Tabebuia roseoalba osmoprimed seeds in polyethylene glycol (PEG) solution and unconditioned seeds were treated with isolated and/or combined solutions of plant growth regulators (PGR) and rooting (RTG). These seeds were submitted to germination test and evaluated for percentage germination rate, germination speed index and normal seedlings, and to seedling emergence test by direct field seeding. RTG had a toxic effect on T. roseoalba seeds. Osmoconditioning induced stress tolerance by RTG during germination and on seedling establishment. PGR treatment favors seedling emergence in field conditions and alleviates the toxicity effect caused by RTG. These treatments have great potential for use in direct sowing of T. roseoalba seeds.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code da Silva, Alexandre Carneiro UNSPECIFIED UNSPECIFIED UNSPECIFIED Palmeira da Silva, Maiara Pilar UNSPECIFIED UNSPECIFIED UNSPECIFIED Zamith, Rayssa UNSPECIFIED UNSPECIFIED UNSPECIFIED Galetti, Gustavo UNSPECIFIED UNSPECIFIED UNSPECIFIED Marquez Pina-Rodrigues, Fatima Conceicao UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-349509
DOI:	10.1590/2317-1545v42226945
Journal or Publication Title:	J. Seed Sci.
Volume:	42
Date:	2020
Publisher:	ABRATES-ASSOC BRASILEIRA TECHNOLOGIA SEMENTES
Place of Publication:	LONDRINA PR
ISSN:	2317-1545
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEEDLING ESTABLISHMENT; DESICCATION TOLERANCE; TREE; GERMINATION; REFORESTATION; RESTORATION Multiple languages Agronomy Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/34950