Consulta: subjectFacets:"Ex-situ conservation"
Registros recuperados: 2
Data/hora: 02/06/2024 12:41:15

Agro-morphological characterization of upland rice accessions
Provedor de dados: 63
Autores: Nascimento,Wellington Ferreira do; Silva,Edson Ferreira da; Veasey,Elizabeth Ann.
The agro-morphological characterization is fundamental in order to provide information for plant breeding programs. The aim of the present study was to characterize 146 accessions of upland rice (Oryza sativa L.), based on qualitative and quantitative agro-morphological descriptors. The experiment was conducted in Recife, state of Pernambuco, Brazil, using a randomized block design with three replicates. Polymorphism was observed among 12 of 14 qualitative characters evaluated, whereas significant differences (p &lt; 0.05) were observed for 11 of the 14 analysed quantitative traits. Genetic variance was higher than environmental variance and the average inheritability coefficients were above 80 % for all characters, which ensures the predominance of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic variability; Germplasm; Ex-situ conservation; Pre-breeding.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000600008

In vitro spore culture and reproductive aspects of the annual fern Anogramma chaerophylla (Pteridaceae)
Provedor de dados: 51
Autores: Luna,María L; Yañez,Agustina; Ramos Giacosa,Juan Pablo; Gorrer,Daniel; Berrueta,Pedro C; Giudice,Gabriela E.
Anogramma chaerophylla belongs to a fern genus with annual sporophytes and potentially perennating gametophytes. In the studied area, Natural Reserve Punta Lara, the plants grow stressed mainly by pollution and the invasion of exotic species. As a part of a project on conservation of ferns inhabiting Buenos Aires province, the objectives of this work were to evaluate in Anogramma chaerophylla the conditions for in-vitro spore germination and to analyse the different stages of its reproductive cycle. Spores were sterilized in an aqueous solution 10 % of NaCIO during different times and then sown in Petri dishes with Murashige &amp;amp; Skoog medium, without the addition of sucrose. The dishes were kept under laboratory conditions, at 12 h light/ darkness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anogramma chaerophylla; Micropropagation; Gametophyte; Tubercle; Ex-situ conservation.
Ano: 2016
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722016000400010