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Genetic and morphological diversity of natural populations of Carica papaya

Rieger, Jennifer E.
http://rave.ohiolink.edu/etdc/view?acc_num=miami1250088839

Abstract Details

2009, Master of Science, Miami University, Botany.
Dioecious, small-fruiting common papayas have been observed growing in Costa Rica within secondary lowland forests. These naturally occurring populations may serve as a reservoir of genetic and morphological diversity for cultivated papaya; therefore, we characterized their morphological and genetic diversity. Morphological diversity among 252 papaya plants growing in different geographic regions of Costa Rica was assessed through chi-square heterogeneity, cluster, and discriminant analyses. A significant amount of morphological diversity was observed throughout the country, especially within reproductive characteristics. Twenty microsatellites were used to assess the genetic diversity of 184 plants from natural populations and ten cultivars to determine levels of heterozygosity, genetic differentiation, and population structure. Comparisons between natural populations and cultivars indicate a greater amount of genetic diversity existing within the natural populations. These results suggest that germplasm from natural papaya populations growing within Costa Rica should be collected and used as a reservoir for genetic and morphological diversity.
Richard Moore, PhD (Advisor)
David Gorchov, PhD (Committee Member)
Nicholas Money, PhD (Committee Member)
77 p.
Botany
Carica papaya; microsatellites; genetic diversity; morphological diversity

Recommended Citations

Citations

  • Rieger, J. E. (2009). Genetic and morphological diversity of natural populations of Carica papaya [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1250088839

    APA Style (7th edition)

  • Rieger, Jennifer. Genetic and morphological diversity of natural populations of Carica papaya. 2009. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1250088839.

    MLA Style (8th edition)

  • Rieger, Jennifer. "Genetic and morphological diversity of natural populations of Carica papaya." Master's thesis, Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=miami1250088839

    Chicago Manual of Style (17th edition)

miami1250088839
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© 2009, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.