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Protocols in ecological and environmental plant physiology

 

Article << Previous     |     Next >>   Contents Vol 61(7)

An apomictic tetraploid Paspalum chaseanum cytotype and its cytogenetic relationship with P. plicatulum (Poaceae): taxonomic and genetic implications

Patricia E. Novo A , Francisco Espinoza A B and Camilo L. Quarin A

A Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste (UNNE), Instituto de Botánica del Nordeste (UNNE–CONICET), Sargento Cabral 2131, Casilla de Correo 209, 3400 Corrientes, Argentina.
B Corresponding author. Email: espinoza@agr.unne.edu.ar

Australian Journal of Botany 61(7) 538-543 http://dx.doi.org/10.1071/BT13194
Submitted: 23 May 2013  Accepted: 3 November 2013   Published: 11 February 2014


 
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Abstract

Paspalum chaseanum Parodi (Poaceae) is a rare species seldom found in the vast phytogeographic Chaco region of South America. It occurs in some localities as a diploid with 20 somatic chromosomes, reproduces sexually and is self-incompatible. A tetraploid cytotype was recently collected in this geographic region. This accession was determined to reproduce of aposporous apomixis and was crossed, as pollen donor, onto a sexual autotetraploid plant of P. plicatulum Michx. The meiotic chromosome pairing behaviour of both parents and their hybrids was primarily as bivalents and quadrivalents, indicating that tetraploid P. chaseanum is likely to have an autoploid origin, and that both species share basically the same genome. Although some controversies exist regarding the subgeneric taxonomic classification of P. chaseanum, these results support its inclusion in the informal Plicatula group of Paspalum. The P. plicatulum × P. chaseanum hybrids segregated for apomixis. The amount of seed set in some hybrids (up to 17%) and the presence of sexual as well as facultative apomictic individuals in the progeny suggest that gene transfer through hybridisation is a feasible tool in genetic-improvement programs concerning these forage grass species.



References

Aguilera PM, Sartor ME, Galdeano F, Espinoza F, Quarin CL (2011) Interspecific tetraploid hybrids between two forage grass species: sexual Paspalum plicatulum and apomictic P. guenoarum. Crop Science 51, 1544–1550.
CrossRef |

Barreto IL (1954) Las especies afines a Paspalum virgatum en América del Sur. Revista Argentina de Agronomía 21, 125–142.

Burson BL (1979) Cytogenetics of Paspalum urvillei × P. intermedium and P. dilatatum × P. paniculatum hybrids. Crop Science 19, 534–538.
CrossRef |

Burson BL (1981) Cytogenetic relationships between Paspalum jurgensii and P. intermedium, P. vaginatum, and P. setaeeum var. ciliatifolium. Crop Science 21, 515–519.
CrossRef |

Burson BL, Bennett HW (1972) Cytogenetics of Paspalum urvillei × P. jurgensii and P. urvillei × P. vaginatum hybrids. Crop Science 12, 105–108.
CrossRef |

Burson BL, Lee H, Bennett HW (1973) Genome relations between tetraploid Paspalum dilatatum and four Paspalum species. Crop Science 13, 739–743.
CrossRef |

Chase A (1929) The North American species of Paspalum. Contributions from the United States National Herbarium 28, 1–310.

Chase A (1939) Paspalum of South America. In edited manuscript conserved in the Hitchcock and Chase Library, Botany Department, Smithsonian Institution, Washington, DC.

Dellaporta SL, Wood J, Hicks JB (1983) A plant DNA minipreparation: version II. Plant Molecular Biology Reporter 1, 19–21.
CrossRef | CAS |

Espinoza F, Quarin CL (1997) Cytoembryology of Paspalum chaseanum and sexual diploid biotypes of two apomictic Paspalum species. Australian Journal of Botany 45, 871–877.
CrossRef |

Forbes I, Burton GW (1961) Cytology of diploids, natural and induced tetraploids, and intraspecific hybrids of bahiagrass, Paspalum notatum Flugge. Crop Science 1, 402–406.
CrossRef |

Giussani LM, Zuloaga FO, Quarin CL, Costa-Sánchez JH, Ubayasena K, Morrone O (2009) Phylogenetic relationships in the genus Paspalum (Poaceae: Panicoideae: Paniceae). Systematic Botany 34, 32–43.
CrossRef |

Matzk F, Meister A, Schubert I (2000) An efficient screen for reproductive pathways using mature seeds of monocots and dicots. The Plant Journal 21, 97–108.
CrossRef | CAS | PubMed |

Ortiz JPA, Quarin CL, Pessino SC, Acuña CA, Martínez EJ, Espinoza F, Hojsgaard DH, Sartor ME, Caceres ME, Pupilli F (2013) Harnessing apomictic reproduction in grasses: what we have learned from Paspalum. Annals of Botany 2013,
CrossRef |

Parodi LR (1932) Algunas gramíneas argentinas nuevas o críticas. Physis 11, 129–138.

Quarin CL (1992) The nature of apomixis and its origin in Panicoid grasses. Apomixis Newsletter 5, 8–15.

Quarin CL, Burson BL (1983) Cytogenetic relations among Paspalum notatum var.saurae, P. pumilum, P. indecorum, and P. vaginatum. Botanical Gazette 144, 433–438.
CrossRef |

Rua GH, Speranza PR, Vaio M, Arakaki M (2010) A phylogenetic analysis of the genus Paspalum (Poaceae) based on cpDNA and morphology. Plant Systematics and Evolution 288, 227–243.
CrossRef |

Sartor ME, Quarin CL, Espinoza F (2009) Mode of reproduction of colchicine-induced Paspalum plicatulum tetraploids. Crop Science 49, 1270–1276.
CrossRef | CAS |

Young BA, Sherwood RT, Bashaw EC (1979) Cleared-pistil and thick-sectioning techniques for detecting aposporous apomixis in grasses. Canadian Journal of Botany 57, 1668–1672.
CrossRef |

Zuloaga FO, Morrone O (2005) Revisión de las especies de Paspalum para América del sur austral (Argentina, Bolivia, sur de Brasil, Chile, Paraguay y Uruguay). Monographs in Systematic Botany from the Missouri Botanical Garden 102, 1–297.


   
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