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Emergence of seedlings of wild peanut species

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Author(s): Willians Cesar Carrega | Marcos Doniseti Michelotto | Everton Luis Finoto | Alessandra Pereira Fávero | Ignácio José de Godoy

Journal: Biotemas
ISSN 0103-1643

Volume: 24;
Issue: 4;
Start page: 31;
Date: 2011;
Original page

Keywords: Arachis spp. | Ethylene | Peeling | Storage

ABSTRACT
This research aimed to evaluate, after two periods of storage, the emergence of seedlings of wild peanut species, under the treatment of seeds with ethylene and manual peeling of the fruits. The trials were carried out in a laboratory of Apta, at Polo Regional Centro Norte, in Pindorama – Sao Paulo, Brazil. Seven seedling samples of fi ve species (Arachis stenosperma, A. kuhlmannii, A. monticola, A. gregoryi, and A. williamsii) were used in the trials. The seeds were peeled or not (removal of the pericarp), and they were treated or not with ethylene for breaking the dormancy after they underwent a storage under natural conditions for 130 (assay 1) and 500 days (assay 2) after harvesting (DAH). All accessions presented a higher emergence of seedlings when submitted to ethylene treatment, indicating the presence of dormancy in seeds, especially for 130 days of storage. The seeds of A. monticola presented a significant dormancy even after 500 days of storage. The wild species had different responses with regard to the emergence capacity of seedlings after the removal of pericarp, but at 130 days they presented, generally, a higher emergence without pericarp; however, due to the long period of storage, it seems they become sensitive to the peeling, germinating better with the pericarp.
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