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Differential pollen tube growth in inbred self-compatible almond genotypes

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Abstract

Pistil and pollen behavior during self- and cross-pollinations in 10 inbred almond seedlings with self-compatible genotypes and self-incompatible phenotypes were studied. Pollen from these inbred seedlings was examined for the pollen tube growth in self and non-self styles, while pistils from these seedlings were tested for their ability to support self and non-self pollen tube growth. Pistils and pollen of inbred genotypes were compatible with unrelated genotypes but the pistils were unable to support the growth of related pollen, which showed a slower tube growth rate. This may be a consequence of inbreeding, resulting in a silenced self-compatibility or cryptic self-incompatibility in some genetically self-compatible genotypes. This reaction would be a mechanism favoring crossing with unrelated genotypes and reducing inbreeding in future generations.

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Alonso, J.M., Rafel Socias i Company. Differential pollen tube growth in inbred self-compatible almond genotypes. Euphytica 144, 207–213 (2005). https://doi.org/10.1007/s10681-005-5813-8

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  • DOI: https://doi.org/10.1007/s10681-005-5813-8

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