Development of Carica Interspecific Hybrids

Drew, R. A.; O’Brien, Chris; Magdalita, P. M.

doi:10.17660/actahortic.1998.461.31

Cited by 71 publications

(39 citation statements)

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“…a short distance in cpDNA tree, is the result of effective interfertility to some extent. The validity of this hypothesis can be verified by comparison of the clustering found here with results on intergeneric and interspecific Caricaceae crosses; Drew et al (1998) found that it was more difficult to cross papaya with V. cauliflora or V. goudotiana (both belonging to clade 1, Fig. 3) than with V. quercifolia or V. parviflora (belonging to the same clade as papaya, Fig.…”

Section: Caricaceae Phylogenysupporting

confidence: 69%

“…If, besides V. heilbornii, other taxa are indeed natural interspecific hybrids, a reticulate evolution must be postulated for Vasconcellea. The occurrence of natural hybridization within Vasconcellea has already been suggested by Badillo (1971) and is further supported by the fact that most Vasconcellea species easily cross in interspecific controlled crosses (Mekako and Nakasone 1975;Drew et al 1998). …”

Section: Vasconcellea Phylogenysupporting

confidence: 57%

“…Besides the commercial value of the ripe fruit and its processed products, papaya is also cultivated, although to a lesser extent, for the latex present in its plant parts (Drew et al 1998). The different proteinases, obtained from the latex extracted from unripe fruit, have a broad spectrum of activity and are therefore widely used in food and pharmaceutical industries (Madrigal et al 1980).…”

mentioning

confidence: 99%

“…Besides the interest for highland papayas as possible fruit crops, some possess interesting traits that may be useful in papaya breeding (National Research Council 1989). Intergeneric crosses between Carica papaya and Vasconcellea species are problematic due to genome incompatibility (Magdalita et al 1997), but in recent reports embryo rescue techniques were used to overcome these incompatibility barriers (Drew et al 1998). This and other biotechnological approaches could lead to the introduction of specific traits of Vasconcellea species into papaya such as the resistance against Papaya Ringspot Virus and cold tolerance (Manshardt and Wenslaff 1989).…”

mentioning

confidence: 99%

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Phylogenetic analysis of the highland papayas (Vasconcellea) and allied genera (Caricaceae) using PCR-RFLP

et al. 2004

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The chloroplast and mitochondrial DNA diversity of 61 genotypes belonging to 18 Vasconcellea species, the so-called highland papayas, was studied by PCR-RFLP analysis of two non-coding cpDNA regions ( trnM- rbcL and trnK1- trnK2) and one non-coding mtDNA region ( nad4/1- nad4/2). This sample set was supplemented with six genotypes belonging to three other Caricaceae genera: the monotypic genus Carica, including only the cultivated papaya, and the genera Jacaratia and Cylicomorpha. Moringa ovalifolia was added as an outgroup species. The PCR-amplified cpDNA regions were digested with 18 restriction endonucleases, the mtDNA region with 11. A total of 22 point mutations and four insertion/deletions were scored in the sample. A higher level of interspecific variation was detected in the two cpDNA regions in comparison to the analysis of the mtDNA. Wagner parsimony and Neighbor-Joining analysis resulted in dendrograms with similar topologies. PCR-RFLP analysis supported the monophyly of Caricaceae, but among the 26 mutations scored, an insufficient number of markers discriminated between the different Caricaceae genera included in this study. Hence the inference of the intergeneric relationships within Caricaceae was impossible. However, some conclusions can be noted at a lower taxonomic level. The Caricaceae species were divided into two lineages. One group included only Vasconcellea spp., whereas the second included the remaining Vasconcellea spp., together with the papaya genotypes and those from the other Caricaceae genera. This may indicate a higher level of inter-fertility for the Vasconcellea species from the latter clade in interspecific crossings with papaya. The putative progenitors of the natural sterile hybrid V. x heilbornii, i.e. V. stipulata and V. cundinamarcensis, were only distantly related to V. x heilbornii. This indicates that probably none of these species was involved as the maternal progenitor in the origin of V. x heilbornii. Surprisingly, V. x heilbornii had organellar genome patterns identical with V. weberbaueri, suggesting a possible involvement of this species in the origin of V. x heilbornii. On the basis of discrepancy between morphological traits and the cpDNA profiles of some pairs of Vasconcellea species, we believe that besides V. x heilbornii, some other species have originated through interspecific hybridization. A reticulate evolution for Vasconcellea has therefore been suggested. Finally, intraspecific cpDNA variation was detected in V. microcarpa, thus providing molecular evidence for the high diversity previously indicated by morphological observations.

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Section: Caricaceae Phylogenysupporting

confidence: 69%

Section: Vasconcellea Phylogenysupporting

confidence: 57%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Phylogenetic analysis of the highland papayas (Vasconcellea) and allied genera (Caricaceae) using PCR-RFLP

et al. 2004

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“…A morphological synapomorphy supporting this relationship is a unilocular ovary, while the remaining Caricaceae have 5-locular ovaries. Breeding efforts for papaya improvement should include the four species now revealed as the closest relatives, rather than focusing only on the highland papayas in the genus Vasconcellea (Sawant, 1958;Drew et al, 1998;Siar et al, 2011). So far, studies on the biology of the herbaceous Caricaceae are restricted to an investigation on the cultivation of the lowland species Jarilla chocola (Willingham and White, 1976).…”

Section: The Closest Relatives Of Carica Papaya and The Region Of Thementioning

confidence: 99%

Molecular Phylogeny, Biogeography and an e-Monograph of the Papaya Family (Caricaceae) as an Example of Taxonomy in the Electronic Age

Carvalho¹

2015

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Developing Papaya to Control Papaya Ringspot Virus by Transgenic Resistance, Intergeneric Hybridization, and Tolerance Breeding

Vegas

Prasartsee²,

Drew

et al. 2005

Plant Breeding Reviews

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Development of Carica Interspecific Hybrids

Cited by 71 publications

References 0 publications

Phylogenetic analysis of the highland papayas (Vasconcellea) and allied genera (Caricaceae) using PCR-RFLP

Phylogenetic analysis of the highland papayas (Vasconcellea) and allied genera (Caricaceae) using PCR-RFLP

Molecular Phylogeny, Biogeography and an e-Monograph of the Papaya Family (Caricaceae) as an Example of Taxonomy in the Electronic Age

Developing Papaya to Control Papaya Ringspot Virus by Transgenic Resistance, Intergeneric Hybridization, and Tolerance Breeding

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