Recherches sur la polyembryonie chez les Rosacées (g.<i>Fragaria</i>et<i>Alchemilla</i>)

Lebègue, André

doi:10.1080/00378941.1952.10836477

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…1), suggest a sexual origin for both embryos. Cameron and Garber (1968) in citrus, Lebegue (1952) in wild strawberry, and Kenworthy et al (1973) in soybean, also proposed a sexual origin for some multiple embryos. A mechanism for polyembryo development could involve budding of the secondary (external or basal) embryo from the primary (internal or distal) embryo as proposed by Kenworthy et al (1973) in soybean.…”

Section: Mitotic Karyotypementioning

confidence: 93%

“…2). Lebegue (1952) had previously reported finding genetically similar sexual polyembryos in wild strawberry (Fragaria vesca). In citrus, Cameron and Garber (1968) reported that genetically identical polyembryos might occur following interspecific hybridization.…”

Section: Ssr Variationmentioning

confidence: 95%

“…A sexual origin, with fertilization of one or more embryos within an ovule, has been described in citrus (Cameron and Garber 1968;Cameron and Soost 1979), soybean (Kenworthy et al 1973) and Fragaria species (Lebegue 1952).…”

Section: Introductionmentioning

confidence: 98%

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Sexual polyembryony in almond

Martínez‐Gómez

Gradziel

2003

Sexual Plant Reproduction

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Multiple embryos within the same seedcoat occur spontaneously in certain almond [P. dulcis (Mill.) D.A. Webb] cultivars including 'Nonpareil' and 'Mission'. Seedlings from the same polyembryonic seed are frequently viable, though one of the seedlings often shows weak growth and develops poorly. These dwarf seedlings have previously been reported as haploid. In this work, we have characterized several seedlings from 'Nonpareil' polyembryonic seed, including their germination and later growth. Isozyme and simple sequence repeat markers were used to analyze seedling genetic structure. In addition, individual mitotic karyotypes were determined following root-tip staining. The percentage of twin embryos showing aberrant growth was approximately 30%, with mortality rates of about 90%. The majority of these aberrant seedlings appear to be aneuploids. Most secondary embryos appear to be derived from the primary embryo following normal fertilization.

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