Effect of dispersion unit size and seed colour on germination of Atriplex cordobensis (Gandoger et Stuckert)
The effect of dispersion unit size and colour of seeds on germination and early seedling growth of Atriplex cordobensis was evaluated. A statistically significant association was found between dispersion unit size and seed weight. Light-brown, reddish and dark-brown coloured seeds were found in all sizes of dispersion units. Dark-brown seeds were the lowest in weight, the least abundant and the ones more frequently containing immature and non-viable coffee-coloured embryos. Light-brown and reddish seeds were common in medium and large-sized dispersion units. They were heavier and had higher percentage of mature embryos than the dark-brown seeds. Light-brown and reddish seeds also had the greatest germination percentages and seedling dry weight. Seeds originated from large dispersion units produced, in terms of dry weight, more vigorous seedlings. It is concluded that light-brown seeds, from medium-sized DU and light-brown and reddish seeds, from large-size DU, are the seeds of greatest quality in A. cordobensis, because they have the highest proportion of mature embryos and produce more and vigorous seedlings.
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Document Type: Research Article
Publication date: April 1, 2006
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