Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 352076
Title Asexual reproduction in a close relative of Arabidopsis: a genetic investigation of apomixis in Boechera ( Brassicaceae).
Author(s) Schranz, M.E.; Kantama, L.; Jong, J.H.S.G.M. de; Mitchell-Olds, T.
Source New Phytologist 171 (2006)2. - ISSN 0028-646X - p. 425 - 438.
DOI http://dx.doi.org/10.1111/j.1469-8137.2006.01765.x
Department(s) Biochemistry
Laboratory of Genetics
EPS-4
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) holboellii brassicaceae - dandelions taraxacum - molecular markers - arabis-drummondii - poa-pratensis - apomixis - apospory - evolution - populations - inheritance
Abstract Understanding apomixis (asexual reproduction through seeds) is of great interest to both plant breeders and evolutionary biologists. The genus Boechera is an excellent system for studying apomixis because of its close relationship to Arabidopsis, the occurrence of apomixis at the diploid level, and its potentially simple inheritance by transmission of a heterochromatic (Het) chromosome. ¿ Diploid sexual Boechera stricta and diploid apomictic Boechera divaricarpa (carrying a Het chromosome) were crossed. Flow cytometry, karyotype analysis, genomic in situ hybridization, pollen staining and seed-production measurements were used to analyse the parents and resulting F1, F2 and selected F3 and test-cross (TC) generations. ¿ The F1 plant was a low-fertility triploid that produced a swarm of aneuploid and polyploid F2 progeny. Two of the F2 plants were fertile near-tetraploids, and analysis of their F3 and TC progeny revealed that they were sexual and genomically stabilized. ¿ The apomictic phenotype was not transmitted by genetic crossing as a single dominant locus on the Het chromosome, suggesting a complex genetic control of apomixis that has implications for future genetic and evolutionary analyses in this group
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