Opuntia DNA and Ploidy
An index to published chromosome information many cacti and prickly pears is at Index to Plant Chromosome Numbers (IPCN, Tropicos). Another index to many plants is at Chromosome Counts Database, Rice et al., 2016, Website.
Ploidy information for many Opuntia species of the USA may also be found in “Pricklypears Commonly Found in the United States and Northern Mexico”, Green, C with Ferguson, D, 2012 (ISBN: 0615131212, 9780615131214). Another excellent source of ploidy information for cacti is “Cacti of the Trans-Pecos and Adjacent Areas”, Powell and Weedin, 2004 (ISBN: 0896725316, 978-0896725317).
Prickly pear names change, and new science provides new evidence. Ploidy levels and taxonomy as presented here represent the best knowledge available at the time the various materials were published. Some species were undoubtedly misidentified. Names of opuntias have changed over time, thus it is important to interpret this information carefully.
Manuscripts
A Cytological and Morphometric Analysis of a Triploid Apomict, Opuntia ×kelvinensis, Baker and Pinkava, 1987
An Intron Loss in the Chloroplast Gene rpo C1 Supports a Monophyletic Origin for the Subfamily Cactoideae of the Cactaceae, Wallace and Costa, 1996
Opuntia of North America, An Overview, Rebman and Pinkava, 2001
Chromosome Counts of Miscellaneous Cacti, Ferguson, 1991 (unpublished)
Chromosome Counts of Opuntia (Cactaceae), Prickly Pear Cacti, in the Midwestern United States, Ribbens and Majure, 2012
Chromosome Counts, Cytology, and Reproduction in the Cactaceae, Ross, 1981
Chromosome Numbers for the Flora of Organ Pipe Cactus National Monument, Pinkava et al., 1992
Chromosome Numbers, Nuclear DNA Content, and Polyploidy in Consolea, Negron-Ortiz, 2007
Chromosome Numbers in Chihuahuan Desert Cacti, Weedin and Powell, 1978
Chromosome Numbers in Chihuahuan Desert Cacti II, Weedin et al., 1989
Chromosome Numbers in Chihuahuan Desert Cacti III, Powell and Weedin, 2001
Chromosome Numbers in Cacti of Western North America I, Pinkava and McLeod, 1971
Chromosome Numbers in Cacti of Western North America II, Pinkava et al., 1973
Chromosome Numbers in Cacti of Western North America III, Pinkava et al., 1977
Chromosome Numbers in Cacti of Western North America IV, Pinkava and Parfitt, 1982
Chromosome Numbers in Cacti of Western North America V, Pinkava et al., 1985
Chromosome Numbers in Cacti of Western North America VI, with Nomenclatural Changes, Pinkava et al., 1992
Chromosome Numbers in Cacti of Western North America VII, Pinkava et al., 1998
Chromosome Numbers in Cacti of Western North America VIII, Baker et al., 2009
Chromosome numbers in some cacti of Western North America IX, Baker and Pinkava, 2018
Chromosome Numbers in Miscellaneous North American Vascular Plants, Parfitt et al., 1990
Chromosome Numbers in Miscellaneous Angiosperms, Baker, 2009
Chromosome Numbers of Some of the Cactaceae, Stockwell, 1935
Club Chollas of the Big Bend, Fenstermacher, 2016
Cylindropuntia chuckwallensis, Baker and Cloud-Hughes, 2014
Cylindropuntia multigeniculata, Baker, 2005
Cytogeography of the Humifusa Clade of Opuntia, Majure et al., 2012
Documented Chromosome Numbers, 2005, trans-Pecos, Weedin and Powell, 2005
Evolution of the Xerocarpa Clade, Majure et al., 2023
Evolution of the Chollas, Mayer et al., 2021
Fruit Characters Among Apomicts and Sexual Progeny of a Cross of the Texas Native Opuntia lindheimeri (1250) with a Commercial Fruit Type Opuntia ficus–indica (1281), Felker, et al., 2009
Genome Sizes and Ploidy in Mexican Species of Opuntia, Segura et al., 2007
Grusonia pulchella classification and its impacts on the genus Grusonia, Griffith, 2002
Isolation and Characterization of Polymorphic Microsatellite Markers in Galapagos Prickly Pear Cactus Species, Helsen et al., 2007
Low Levels of Genetic Differentiation between Opuntia echios, Helsen, et al., 2009
Karyotypes, Heterochromatin, and Physical Mapping of 18S-26S rDNA in Cactaceae, Penas, et al., 2009
Karyotpic Studies in (three species) of Opuntia, Palomino and Heras, 2001
Karyotypes to Determine Relationships between Species of Opuntia, 2000
Measuring Genome Size of Desert Plants Using Dry Seeds, Sliwinska et al., 2009
miRNA Expression During Prickly Pear Cactus Fruit development, Caballero et al., 2015
Miscellaneous Chromosome Numbers in Opuntieae, Majure et al., 2012
Molecular Based Assessment of Genetic Diversity of xoconostle Accessions, Valadez-Moctezuma et al., 2014
Molecular Based Assessment of Genetic Diversity Within Barbary fig, Zoghlami et al., 2007
Molecular Characteristics of Prickly-pear Cactus (Opuntia) Based on Internal Transcribed Spacer Sequences (ITS) of Queretaro State – Mexico, de Lyra et al., 2012
Molecular Phylogeny and Character Evolution in Terete-stemmed Andean Opuntias, Ritz et et al., 2012
Molecular Studies of Forage Prickly-pear Cactus from Brazil, Catanho Pereira de Lyra, 2015
Molecular Systematics of the Cactaceae, Barcenas, et al., 2011
Multivariate Analysis of Karyotpes in Opuntia, Bandyopadhyay and Sharma, 2000
Natural Pentaploids in the Opuntia lindheimeri–phaeacantha Group in Texas, Grant and Grant, 1982
Nomenclatural Changes in Cylindropuntia and Opuntia, Pinkava, 2002
Nuclear DNA in Angiosperms, Bennet and Leitch, 2010
Nuclear genome size, ploidy level and endoolyploidy pattern in opuntia species, Palomino et al, 2016
Números Cromosomáticos Para las Cactaceae del Paraguay, Author and date unknown
Opuntia delafuentiana a New Xoconostle from Central Mexico, Martinez-Gonzalez et al., 2015
Opuntia diploursina, Stock et al., 2014
Opuntia ficus-indica; Chromosome Races and Origins, Tephrocactus Study Group, Rowley
Origins of Opuntia curvospina, Parfitt, 1980
Phylogenomics of CAM Plants (Opuntiodeae), Majure 2023
Phylogenetic Relationships in Opuntia (Cactaceae, Opuntioideae) from South America, Realini, 2014
Phylogeny of Opuntia ss–Clade delineation, geographic origins, and reticulate evolution, Majure et all, 2012
Plastome Variation in the Prickly Pear Cacti, Kohler et al, 2023
Taxonomy and Distribution of Opuntia and Related Plants, Puente and Pinkava, date unknown
The Origins of an Important Cactus Crop, Opuntia ficus-indica, Griffith, 2004
Typifications and a Nomeclatural Change in Some Eastern North American Opuntia, Majure, 2014
Unraveling Reticulate Evolution in Opuntia (Cactaceae) From Southern Mexico
Using Molecular Data to Elucidate Reticulate Evolution in Opuntia (Cactaceae), Griffith, 2003
What Did the First Cacti Look Like, Griffith, 2004
make a simpler website
Timmy,
Thanks for your comment. Species and papers are arranged alphabetically. What do you advise?
Joe
need help? Am very familiar with Database structures and application development. Am retired, but am uptodate on web technologies. Sounds like a fun project.
Hi,
Thanks for the offer to help. I’ll send you an email.
Joe