2006
DOI: 10.1590/s0103-90162006000100005
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Sexual polyploidization in red clover

Abstract: Because sexual polyploidization broadens genetic basis and supply plant breeders with more variability for the selection process, it can be useful in red clover breeding. This paper reports results of three crossing cycles, starting from a parental generation of tetraploid red clover plants (female parent), and diploids from the Quiñiqueli cultivar, selected for production of more than 1% of giant pollen grains (male parent) aiming to obtain tetraploid plants to be used in red clover breeding programs. Crosses… Show more

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Cited by 9 publications
(6 citation statements)
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“…Pollen fertility was estimated by stainability (in 2% propionic carmine, following Simioni et al, 2006) of 1500 mature pollen grains per plant. Full, well stained grains were classified as potentially viable and unstained or poorly stained as sterile.…”
Section: Methodsmentioning
confidence: 99%
“…Pollen fertility was estimated by stainability (in 2% propionic carmine, following Simioni et al, 2006) of 1500 mature pollen grains per plant. Full, well stained grains were classified as potentially viable and unstained or poorly stained as sterile.…”
Section: Methodsmentioning
confidence: 99%
“…Counts were performed in the associations in diakinesis and metaphase I, mainly because these stages have an easily visualizable chromosome pairing configuration. In both cytogenetic analysis (mitotic and meiotic analysis), as indicated in the literature, a minimum of 20 cells per plant was checked by chromosome number counting (Pozzobon and Valls 1997, Simioni et al 2006, Dahmer et al 2008.…”
Section: Methodsmentioning
confidence: 99%
“…About 1500 mature pollen grains per plant were evaluated. Pollen fertility was determined by the staining with 1% propionic carmine: full, stained grains were classified as fertile and non-stained or weakly stained grains were considered sterile (Simioni et al 2004, Simioni et al 2006.…”
Section: Methodsmentioning
confidence: 99%