Projects

CONSERVATION AND UTILIZATION OF SUBTROPICAL/TROPICAL FRUIT CROPS, SUGARCANE, AND TRIPSACUM GENETIC RESOURCES Appropriated (D)   Accession Number: 413025

DEVELOPMENT OF AN INTERNATIONAL MARKER ASSISTED SELECTION PROGRAM FOR CACAO Appropriated (D)   Accession Number: 412982

GERMPLASM EVALUATION, BREEDING, AND PHYTOPATHOLOGY STUDIES FOR OBTAINING IMPROVED COCOA VARIETIES Specific Cooperative Agreement (S)   Accession Number: 410727

ESTIMATION OF GENETIC RELATIONSHIPS BETWEEN PATHOTYPES OF THE WITCHES' BROOM & FROSTY POD PATHOGENS OF CACAO ... DIFFERENTIAL PATHOGENICITY Specific Cooperative Agreement (S)   Accession Number: 408133

GENETIC IMPROVEMENT OF THEOBROMA CACAO Trust (T)   Accession Number: 410242

Publications

Geographic and genetic population differentiation of the Amazonian chocolate tree - (Peer Reviewed Journal) - (07-Jul-08)

A composite linkage map from the combination of three crosses made from commercial clones of cacao, T. cacao L. - (Peer Reviewed Journal)

Brown, J.S., Sautter, R.T., Tondo, C.T., Borrone, J.W., Kuhn, D.N., Motamayor, J.C., Schnell II, R.J. 2008. A composite linkage map from the combination of three crosses made from commercial clones of cacao, T. cacao L.. Tropical Plant Biology. DOI 10.1007/s12042-008-9011-4

Out-crossing in Florida avocados as measured using microsatellite markers - (Peer Reviewed Journal)

Borrone, J.W., Tondo, C.T., Kuhn, D.N., Brown, J.S., Schnell Ii, R.J., Violi, H.A. 2008. Out-crossing in Florida avocados as measured using microsatellite markers. J. Amer. Soc. Hort Sci. 133(2):255-261.

Development of marker assisted selection program for cacao - (Peer Reviewed Journal)

Schnell Ii, R.J., Kuhn, D.N., Brown, J.S., Tondo, C.T., Motamayor, J.C. 2007. Development of marker assisted selection program for cacao. Journal of Phytopathology. 97(12):1664-1669.

An estimation of outcrossing in Florida avocado (Persea americana Mill.) using microsatellite markers - (Proceedings/Symposium)

Borrone, J.W., Olano, C.T., Kuhn, D.N., Brown, J.S., Violi, H., Ploetz, R., Schnell Ii, R.J. 2007. An estimation of outcrossing in Florida avocado (Persea americana Mill.) using microsatellite markers. Botanical Society of America Proceedings.

Development of Mapping Populations for Avocado. - (Proceedings/Symposium)

Tondo, C.T., Borrone, J.W., Kuhn, D.N., Brown, J.S., Violi, H.A., Ploetz, R., Schnell Ii, R.J. 2007. Development of Mapping Populations for Avocado. Proceedings of Florida State Horticultural Society. 120:26-29

Integrating genomics into an applied cacao breeding program. - (Other)

Schnell Ii, R.J., Motomayor, J.C., Brown, J.S., Kuhn, D.N., Olano, C.T., Borrone, J.W., Ploetz, R., Rosenquist, E. 2007. Integrating genomics into an applied cacao breeding program.. Meeting Abstract.

Integrating genomics into an applied cacao breeding program. - (Other)

Schnell II, R.J., Motomayor, J.C., Brown, J.S., Kuhn, D.N., Olano, C.T., Borrone, J.W., Ploetz, R., Rosenquist, E. 2007. Integrating genomics into an applied cacao breeding program.. Meeting Abstract.

Mapping QTL for resistance to frosty pod and black pod diseases, and for horticultural traits in Theobroma cacao L. - (Peer Reviewed Journal)

Brown, J.S., Phillips-Mora, W., Power, E.J., Krol, C.A., Cervantesmartinez, C., Motamayor, J., Schnell II, R.J. 2007. Mapping QTL for resistance to frosty pod and black pod diseases, and for horticultural traits in Theobroma cacao L.. Crop Science. 47:1851-1858.

Cacao genomics and the development of a marker-assisted-selection program for cacao - (Abstract) - (13-Jan-07)

Development of molecular genetic markers from a cDNA subtraction library of Frosty Pod inoculated cacao - (Proceedings/Symposium)

Kuhn, D.N., Macarthur, H.C., Borrone, J.W., Schnell Ii, R.J., Brown, J.S., Johnson, E., Phillips-Mora, W. 2006. Development of molecular genetic markers from a cDNA subtraction library of Frosty Pod inoculated cacao. Proceedings of the XVth International Cacao Conference.

Microsatellite Markers developed from Theobroma Cacao L. Expressed Sequence Tags - (Peer Reviewed Journal)

Borrone, J.W., Brown, J.S., Kuhn, D.N., Schnell II, R.J. 2007. Microsatellite Markers developed from Theobroma Cacao L. Expressed Sequence Tags. Molecular Ecology Notes.7:236-239.

Microsatellite-containing expressed sequence tags for genetic mapping and genotyping Theobroma cacao - (Proceedings/Symposium)

Borrone, J.W., Schnell Ii, R.J., Brown, J.S., Kuhn, D.N. 2007. Microsatellite-containing expressed sequence tags for genetic mapping and genotyping Theobroma cacao. Proceedings of the XVth International Cacao Conference.

CURRENT CHALLENGES OF TROPICAL TREE CROP IMPROVEMENT: INTEGRATING GENOMICS INTO AN APPLIED CACAO BREEDING PROGRAM - (Peer Reviewed Journal)

Schnell II, R.J., Brown, J.S., Kuhn, D.N., Cervantesmartinez, C., Borrone, J.W., Olano, C.T., Motamayor, J.C., Phillips, W., Johnson, E., Monteverde-Penso, E.J., Amores, F., Lopes, U. 2007. Current challenges of tropical tree crop improvement: integrating genomics into an applied cacao breeding program. Acta Horticulturae: Proc IS on biotechnology of temperate fruit crops and tropical species. 738:p129-144.

PRELIMINARY QTL MAPPING RESULTS TO FROSTY POD AND HORTICULTURAL TRAITS - (Proceedings/Symposium) - (15-Jun-06)

Mapping QTLs in breeding populations of cacao (Theobroma cacao L.) - (Proceedings/Symposium) - (15-Jun-06)

Integrating genomics into applied tropical fruit breeding programs - (Abstract)

Schnell II, R.J., Motamayor, J., Brown, J.S., Kuhn, D.N., Cervantesmartinez, C., Olano, C.T., Ploetz, R.C., Ayala Silva, T. 2006. Integrating genomics into applied tropical fruit breeding programs. Meeting Abstract.

ANALYSIS OF OF CLONAL GERMPLASM FROM FIVE SACCHARUM SPECIES: S. BARBERI, S. ROBUSTUM, S. OFFICINARUM, SL. SINENSE AND S. SPONTANEUM. A STUDY OF INTER- AND INTRASPECIES RELATIONSHIPS USING MICROSATELLITE MARKERS - (Peer Reviewed Journal)

Brown, J.S., Schnell II, R.J., Power, E.J., Douglas, S.L., David N. Kuhn. 2007. Analysis of clonal germplasm from five saccharum species: s. barberi, s. robustum, s. officinarum, sl. sinense and s. spontaneum. A study of inter- and intraspecies relationships using microsatellite markers. Genetic Resources and Crop Evolution.54:627-648.

IDENTIFICATION OF CACAO TIR-NBS-LRR RESISTANCE GENE ANALOGS AND THEIR USE AS GENETIC MARKERS - (Peer Reviewed Journal)

Kuhn, D.N., Narasimhan, G., Nakamura, K., Brown, J.S., Schnell II, R.J., Meerow, A.W. 2006. Identification of cacao tir-nbs-lrr resistance gene analogs and their use as genetic markers. Journal of the American Society for Horticultural Science.131(6):806-813.

COMBINING ABILITY FOR DISEASE RESISTANCE, YIELD, AND HORTICULTURAL TRAITS FOR CACAO (THEOBROMA CACAO L.) CLONES - (Peer Reviewed Journal)

Cervantes-Martinez, C., Phillips-Mora, W., Brown, J.S., Motamayor, J.C., Takrama, J.F., Schnell II, R.J. 2006. Combining ability for disease resistance, yield, and horticultural traits for cacao (Theobroma cacao L.) clones. Journal of the American Society for Horticultural Science. 131(2):231-241.

A COMPUTER SIMULATION STUDY ON THE NUMBER OF LOCI TO AND TREES REQUIRED TO ESTIMATE GENETIC VARIABILITY IN CACAO (THEBROMOA CACAO L.) - (Peer Reviewed Journal)

Cervantes-Martinez, C., Brown, J.S., Motamayor, J.C., Zhang, D., Schnell II, R.J. 2006. A computer simulation study on the number of loci and trees required to estimate genetic variability in cacao (Thebromoa cacao L.). Tree Genetics & Genomics.

MANGO GENETIC DIVERSITY ANALYSIS AND PEDIGREE INFERENCES FOR FLORIDA CULTIVARS USING MICROSATELLITE MARKERS - (Peer Reviewed Journal)

Schnell II, R.J., Brown, J.S., Olano, C.T., Meerow, A.W., Campbell, R.J., Kuhn, D.N. 2006. Mango genetic diversity analysis and pedigree inferences for florida cultivars using microsatellite markers. Journal of the American Society for Horticultural Science. 131(2):214-224.

DETERMINATION OF COLOR AND FRUIT TRAITS OF HALF-SIB FAMILIES OF MANGO (MANGIFERA INDICA L.) - (Trade Journal)

Ayala-Silva, T., Schnell II, R.J., Meerow, A.W., Winterstein, M.C., Cervantes-Martinez, C., Brown, J.S. 2005. Determination of color and fruit traits of half-sib families of mango (Mangifera indica L.). Proceedings of Florida State Horticultural Society. 118:253-257.

CAN WE SELECT FOR SHORTER CACAO PLANTS? - (Trade Journal)

Monteverde-Penso, E.J., Phillips, W., Machado, R., Brown, J.S., Schnell II, R.J., Motamayor, J.C. 2005. Can we select for shorter cacao plants?. Ingenic Newsletter. 10:16-19.

DETERMINATION OF OFF-TYPES IN A CACAO BREEDING PROGRAM USING MICROSATELLITES - (Trade Journal)

Takrama, J.F., Cervantes-Martinez, C.T., Phillips-Mora, W., Brown, J.S., Motamayor, J., Schnell II, R.J. 2005. Determination of off-types in a cacao breeding program using microsatellites. Ingenic Newsletter. 10:2-8.

WHY WOULD BE BREED CACAO IN FLORIDA? - (Trade Journal)

Schnell II, R.J., Brown, J.S., Kuhn, D.N., Cervantes-Martinez, C.T., Olano, C.T., Motamayor, J. 2005. Why would be breed cacao in Florida?. Proceedings of Florida State Horticultural Society. 118:189-191.

Single strand conformation polymorphism analysis of candidate genes for reliable identification of alleles by capillary array electrophoresis. - (Peer Reviewed Journal)

Kuhn, D.N., Borrone, J.W., Meerow, A.W., Motamayor, J., Brown, J.S., Schnell Ii, R.J. 2005. Single strand conformation polymorthism analysis of candidate genes for reliable identification of alleles by capillary array electrophoresis. Electrophoresis. 26:112-125.

RESISTANCE GENE MAPPING FOR WITCHES' BROOM DISEASE IN THEOBROMA CACAO L. IN AN F2 POPULATION USING SSR MARKERS AND CANDIDATE GENES. - (Peer Reviewed Journal)

Brown, J.S., Schnell II, R.J., Motamayor, J.C., Lopes, U., Kuhn, D.N. 2005. Resistance gene mapping for witches' broom disease in Theobroma cacao L. in an f2 population using ssr markers and candidate genes. Journal of the American Society for Horticultural Science. 130(3):366-373.

RETROSPECTIVE DETERMINATION OF THE PARENTAL POPULATION OF SUPERIOR THEOBROMA CACAO L. SEEDLINGS AND ASSOCIATION OF MICROSATELLITE ALLELES WITH PRODUCTIVITY - (Peer Reviewed Journal)

Schnell II, R.J., Olano, C.T., Brown, J.S., Meerow, A.W., Meneres, T., Nagai, C., Motamayor, J.C. 2005. Retrospective determination of the parental population of superior Theobroma cacao L. seedlings and association of microsatellite alleles with productivity. Journal of the American Society for Horticultural Science. 130(2):181-190.

SINGLE STRAND CONFORMATION POLYMORPHISM ANALYSIS OF CANDIDATE GENES FOR RELIABLE IDENTIFICATION OF ALLELES BY CAPILLARY ARRAY ELECTROPHORESIS. - (Peer Reviewed Journal)

Kuhn, D.N., Borrone, J., Meerow, A.W., Motamayor, J., Brown, J.S., Schnell II, R.J. 2005. Single strand conformation polymorphism analysis of candidate genes for reliable identification of alleles by capillary array electrophoresis. Electrophoresis. 26:112-125.

FREQUENCY OF OFF-TYPE PROGENY AMONG THE ORIGINAL ICS1 X SCA6 RECIPROCAL FAMILIES MADE FOR SELECTION FOR DISEASE RESISTANCE IN TRINIDAD - (Trade Journal)

Schnell II, R.J., Heath, M., Johnson, E.S., Brown, J.S., Olano, C.T., Motamayor, J. 2004. Frequency of off-type progeny among the original ICS1 x SCA6 reciprocal families made for selection for disease resistance in Trinidad. Ingenic Newsletter. 9:34-39.

GERMPLASM AND GENOME RESOURCES IN THEOBROMA CACAO: CURRENT CHALLENGES OF TROPICAL TREE CROP BREEDING - (Proceedings/Symposium)

Schnell II, R.J. 2004. Germplasm and genome resources in theobroma cacao: current challenges of tropical tree crop breeding. American Association for the Advancement of Science Meeting.

CAN MODERN PLANT SCIENCE DRIVE THE AGRO-ECOLOGY OF AN ANCIENT CROP? - (Proceedings/Symposium)

Schnell II, R.J. 2004. Can modern plant science drive the agro-ecology of an ancient crop? Proceedings of the National Academy of Sciences.

A HAPLOTYPE-BASED METHOD FOR QTL MAPPING OF F1 POPULATIONS IN OUTBRED PLANT SPECIES. - (Peer Reviewed Journal)

Cervantes-Martinez, C., Brown, J.S. 2004. A haplotype-based method for QTL mapping of F1 populations in outbred plant species. Crop Science. 44:1572-1583.

DETERMINATION AND RELATIVE QUANTIFICATION OF SOURCES OF VARIATION IN A REPLICATED MICROARRAY EXPERIMENT USING RESISTANCE GENE HOMOLOGUE SEQUENCES. - (Peer Reviewed Journal)

Brown, J.S., Kuhn, D., Wisser, R.J., Power, E.J., Schnell II, R.J. 2004. Determination and relative quantification of sources of variation in a replicated microarray experiment using resistance gene homologue sequences. Biotechniques.

EVALUATION OF AVOCADO GERMPLASM USING MICROSATELLITE MARKERS. - (Peer Reviewed Journal)

Schnell II, R.J., Brown, J.S., Olano, C.T., Power, E.J., Krol, C.A., Kuhn, D.N., Motamayor, J. 2003. Evaluation of avocado germplasm using microsatellite markers. American Society for Horticultural Science.

A PRELIMINARY GENOMIC MAP BASED ON SSR MARKERS, RESISTANCE GENE HOMOLOGUES, AND STRESS-RELATED WRKY GENES IN AN F2 POPULATION OF T. CACAO L. - (Peer Reviewed Journal)

Brown, J.S., Kuhn, D., Motamayor, J.C., Borrone, J., Lopes, U., Schnell II, R.J. 2003. A preliminary genomic map based on SSR markers, Resistance Gene Homologues, and Stress-related WRKY genes in an F2 population of T. cacao L. Proceedings of the International Cocoa Producer's Conference.

RESISTANCE GENE HOMOLOGUES IN THEOBROMA CACAO AS USEFUL GENETIC MARKERS - (Peer Reviewed Journal)

Kuhn, D.N., Heath, M.A., Winterstein, M.C., Wisser, R.W., Meerow, A.W., Brown, J.S., Lopes, U., Schnell II, R.J. 2003. Resistance gene homologues in Theobroma cacao as useful genetic markers. Theoretical and Applied Genetics. 107:191-202.

ANALYSIS OF GENETIC DIVERSITY AND POPULATION STRUCTURE WITHIN FLORIDA COCONUT (COCOS NUCIFERA L.) GERMPLASM USING MICROSATELLITE DNA, WITH SPECIAL EMPHASIS ON THE FIJI DWARF CULTIVAR - (Proceedings/Symposium)

Meerow, A.W., Wisser, R.J., Brown, J.S., Kuhn, D.N., Schnell II, R.J., Broschat, T.K. 2002. Analysis of genetic diversity and population structure within Florida coconut (Cocos nucifera L.) germplasm using microsatellite DNA, with special emphasis on the Fiji Dwarf cultivar. Horticultural International Congress Proceedings.