RELATIONSHIP OF <i>CARTHAMUS LEUCOCAULOS</i> TO OTHER <i>CARTHAMUS</i> SPECIES (COMPOSITAE)

Estilai, A.; Knowles, P. F.

doi:10.1139/g78-025

Cited by 22 publications

(19 citation statements)

References 7 publications

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“…These authors interpreted this result as indicative of the hybrid origins of these species previously proposed by several authors (Ashri and Knowles 1960;Harvey and Knowles 1965;Khidir and Knowles 1970a, b;Estilai and Knowles 1978). Thus, the phylogenetic relationships of these three polyploid taxa to the other species of Carthamus remain obscure.…”

Section: Taxonomy and Phylogenymentioning

confidence: 59%

“…Hybrids from interspecific crosses of C. divaricatus (n = 11) and species with 20 somatic chromosomes resulted in good chromosome pairing during meiosis I, and partially fertile pollen and seed, which was interpreted as evidence for a close relationship between these taxa ( Fig. 1; Estilai and Knowles 1978). Crosses with C. tinctorius and C. divaricatus produced self-incompatible hybrids that were fertile.…”

Section: Section Odonthagnathis (Taxa With N = 10 and 11)mentioning

confidence: 96%

“…A new genus Femeniasia Susanna was recently added to the complex, and has further complicated our understanding of relationships among these closely related groups (Vilatersana et al 2000). A recent molecular-based phylogenetic study (Vilatersana et al 2000), several detailed morphological studies (Ashri and Knowles 1960;Hanelt 1963;López-González 1989) and cytogenetic analysis of hybrids from interspecific crosses (Ashri and Knowles 1960;Estilai and Knowles 1976;Estilai and Knowles 1978) have been used to transfer several closely related thistle species from Carthamus to two other genera (Table 1; Lamottea and Phonus). Five chromosome groups were identified by Ashri and Knowles (1960) in Carthamus (n = 10, 11, 12, 22 and 32) and these have influenced the delimitation of the sections of the genus (Table 1).…”

Section: Taxonomy and Phylogenymentioning

confidence: 99%

“…Table 1). Artificial crosses with Lamottea caeruleus (synonym of Carthamus caeruleus) with other species of Carthamus failed to produce seed except for a single cross with C. leucocaulos, which produced a single sterile F 1 plant with low pollen viability (Ashri and Knowles 1960;Estilai and Knowles 1976;Estilai and Knowles 1978; Fig. 1).…”

Section: Taxonomy and Phylogenymentioning

confidence: 99%

“…Crosses of C. lanatus (n = 22) with either C. creticus or C. turkestanicus (n = 32) produced hybrids that formed 22 bivalent and 10 univalent chromosomes during meiosis I (Khidir and Knowles 1970a, b;Estilai and Knowles 1978). The analysis of alcohol dehydrogenase allozymes by Efron et al (1973) demonstrated that C. lanatus, C. creticus and C. turkestanicus share a unique allele for one subunit of this enzyme not found in other species of Carthamus.…”

Section: Intersectional Crossesmentioning

confidence: 99%

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Theoretical hybridization potential of transgenic safflower (Carthamus tinctorius L.) with weedy relatives in the New World

McPherson¹,

Good²,

Topinka³

et al. 2004

Can. J. Plant Sci.

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safflower) is being evaluated as a crop for the production of plant-made pharmaceuticals using an oleosin fusion protein system. We evaluated the potential for transgenic gene flow from C. tinctorius to wild or weedy relatives in western Canada. Cytogenetic and phylogenetic studies with most of the species of Carthamus have demonstrated that cultivated C. tinctorius has the ability to hybridize with at least six wild or weedy relatives worldwide. Of the four naturalized wild relatives in the New World, only two, C. oxyacanthus and C. creticus, have successfully been crossed with C. tinctorius to produce fertile hybrids. Data from artificial crosses resulting in fertile offspring indicate the biological potential of a hybridization event, but only if the species are temporally and spatially sympatric can this occur. Based on the New World distribution of C. oxyacanthus and C. creticus we predict that hybridization with transgenic C. tinctorius could occur in some areas of Argentina, Chile and localities within several states in the United States including California, Florida, Illinois, Kansas, New Mexico, Ohio, Oklahoma, Oregon, Utah, and Texas. Locations in the New World where wild species of Carthamus have not been naturalized may provide biologically isolated locations for the cultivation of a transgenic safflower crop. On s'intéresse au carthame (Carthamus tinctorius L.) pour la production de substances pharmaceutiques végétales par le biais d'un système de protéines hybrides de l'oléosine. Les auteurs ont tenté d'évaluer les risques de flux génétique entre le carthame et les espèces sauvages ou adventices apparentées qu'on trouve dans l'ouest du Canada. Les études cytogénétiques et phylogénétiques sur la majorité des espèces du genre Carthamus indiquent que le carthame pourrait se reproduire avec au moins six espèces sauvages ou adventices dans le monde. Sur les quatre qui se sont acclimatées en Amérique, seules C. oxyacanthus et C. creticus ont donné des hybrides fertiles après croisement avec C. tinctorius. Les données sur les croisements qui ont abouti à des hybrides fertiles nous renseignent sur le potentiel biologique d'hybridation, mais un croisement ne peut survenir que si les deux espèces sont sympatriques dans le temps et l'espace. Compte tenu de l'aire de distribution de C. oxyacanthus et de C. creticus en Amérique, les auteurs estiment qu'il pourrait y avoir hybridation dans certaines parties de l'Argentine, du Chili et de plusieurs États américains, dont la Californie, la Floride, l'Illinois, le Kansas, le Nouveau-Mexique, l'Ohio, l'Oklahoma, l'Orégon, l'Utah et le Texas. Les endroits d'Amérique où les espèces sauvages du genre Carthamus ne se sont pas acclimatées pourraient constituer des endroits biologiquement isolés où l'on pourrait cultiver le carthame transgénique.

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Section: Taxonomy and Phylogenymentioning

confidence: 59%

Section: Section Odonthagnathis (Taxa With N = 10 and 11)mentioning

confidence: 96%