Título:	Processing Eucalyptus cloeziana seed lots to improve purity, germination and vigor.
Autoria:	MICHELON, T. B. VIEIRA, E. S. N. PANOBIANCO, M.
Afiliação:	THOMAS BRUNO MICHELON, UFPR; ELISA SERRA NEGRA VIEIRA, CNPF; MARISTELA PANOBIANCO, UFPR.
Ano de publicação:	2021
Referência:	Scientia Agricola, v. 78, n. 4, e20190299, 2021. 5 p.
Conteúdo:	Eucalyptus cloeziana is one of the highest-density wood species offering significant added value, frequently used in the construction and furniture industries. Despite its suitability, it may be overlooked on account of its propagation difficulties due either to its low rooting cutting capacity or to its seeds having a low germination rate perhaps attributable to the high proportion of indistinguishable impurities within the seed lots. This study aimed to develop an efficient technique for Eucalyptus cloeziana seed processing to increase the physical purity and, consequently, the physiological quality of the seed lot. Three seed lots, separated by size in sieves with 1.18, 1.00, and 0.84 mm square openings, were used. X-ray analyses were carried out, the number of normal seedlings and germination rate identified and the percentage and speed of seedling emergence under greenhouse conditions ascertained. The greenhouse evaluation showed that the seed retained in the 1.18 mm sieve presented viability and vigor twice that of the control. Therefore, the processing technique by size classification is efficient in terms of improving the physical and physiological performance of Eucalyptus cloeziana seed lots.
Thesagro:	Eucalyptus Cloeziana Semente Eucalipto
NAL Thesaurus:	Seedlings
Palavras-chave:	Eucalypt Physical purity Emergence Seedling
Digital Object Identifier:	http://dx.doi.org/10.1590/1678-992X-2019-0299
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPF)