Polymorphism influences seed viability and vigour in polyembryonic Kaffir lime (Citrus hystrix) seeds
Polyembryonic seeds of Kaffir lime showed polymorphism for number of embryos, their viability and the vigour of the seedlings. This polymorphism was determined by the embryo size, weight and accumulation of reserve materials. In general, the seed has a maximum of 5.4 embryos with an
average of 2.9. Correlation was observed between the seed size and the number of embryos: heavier seeds possessed more embryos. Tetrazolium viability staining was positively correlated with the number of seedlings produced from the polyembryonic seeds. The viability of the embryos varied within
a seed with some embryos viable and the rest non-viable reflecting the number of seedlings produced per seed that was less than the number of embryos actually present. Significant differences were also noticed between single seedlings that possessed higher vigour than seedlings arising from
polyembryonic seeds.
Document Type: Research Article
Publication date: 01 April 2017
This article was made available online on 07 February 2017 as a Fast Track article with title: "Polymorphism influences seed viability and vigour in polyembryonic Kaffir lime (Citrus hystrix) seeds".
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