NDLI: Identification of marker-trait associations for self-compatibility in a segregating mapping population of Theobroma cacao L.

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Identification of marker-trait associations for self-compatibility in a segregating mapping population of Theobroma cacao L.

Content Provider	Springer Nature Link
Author	Royaert, Stefan Phillips Mora, Wilbert Arciniegas Leal, Adriana M. Cariaga, Kathleen Brown, James Steven Kuhn, David N. Schnell, Raymond J. Motamayor, Juan Carlos
Copyright Year	2011
Abstract	Increasing yield, quality, and disease resistance are important objectives for cacao breeding programs. Yield reduction in material improved for other traits is one of the main constraints caused by self-incompatibility (SI). Genes regulating SI in cacao have not been identified; therefore, knowledge of the location of genetic markers for and the effects of alleles determining SI will be useful for selecting uniformly self-compatible cultivars with higher yields. In a mapping population originating from a cross between a self-incompatible clone, Pound-7, and a self-compatible clone, UF-273, we observed important differences in flower retention at 15, 21, and 28 days after pollination. Our results suggest that the best time to measure flower retention is 15 days after pollination or later and that selecting self-compatibility (SC) thresholds is genotype specific. Using marker-trait association analysis we identified one marker, mTcCIR222, strongly associated with SC, as well as three surrounding markers (mTcCIR168, mTcCIR115 and mTcCIR158), all located near the proximal end of linkage group 4. These markers are currently being tested in our marker-assisted selection program.
Starting Page	1159
Ending Page	1168
Page Count	10
File Format	PDF
ISSN	16142942
Journal	Tree Genetics & Genomes
Volume Number	7
Issue Number	6
e-ISSN	16142950
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-07-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Theobroma cacao Self-incompatibility Pollination Genetic map Marker-trait association Plant Breeding/Biotechnology Forestry Plant Genetics & Genomics Biotechnology Tree Biology
Content Type	Text
Resource Type	Article
Subject	Genetics Molecular Biology Horticulture Forestry

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Genome-wide association mapping of sexual incompatibility genes in cacao (Theobroma cacao L.)

Identification of marker-trait associations for self-compatibility in a segregating mapping population of Theobroma cacao L.

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Identification of marker-trait associations for self-compatibility in a segregating mapping population of Theobroma cacao L.

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