Produção Nacional
Revisado por pares
Chromosome doubling in Paspalum notatum var. saure (cultivar Pensacola)
2015; Brazilian Society of Plant Breeding; Volume: 15; Issue: 2 Linguagem: Inglês
10.1590/1984-70332015v15n2n19
ISSN1984-7033
AutoresRoberto Luís Weiler, Karine Cristina Krycki, Divanilde Guerra, Carine Simioni, Miguel Dall’Agnol,
Tópico(s)Plant Taxonomy and Phylogenetics
ResumoPaspalum notatum is one of the most important native grassland species of southern Brazil, and the main forage source for livestock. The native ecotypes are tetraploid and have apomictic reproduction, which prevents the registration and protection of plant varieties. However, the cultivated variety Paspalum notatum var. saurae (cultivar Pensacola) is diploid and sexual. The objective of this study was to artificially produce polyploid cv. Pensacola plants, to be used as female parents in crosses with male tetraploid and apomictic parents. Seedlings and seeds were immersed in colchicine solutions for different periods. A tetraploid chromosome number was confirmed in three plants. The reproduction mode of the resulting polyploid plants will be assessed; if confirmed to be sexual, they can be used in crosses with native apomictic plants to breed new intraspecific hybrids.
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