Reproductive Systems in Paspalum: Relevance for Germplasm Collection and Conservation, Breeding Techniques, and Adoption of Released Cultivars
- 1Instituto de Botánica del Nordeste (IBONE-CONICET), Argentina
- 2Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, Argentina
The objective of this review is to analyze and describe the impact that mode of reproduction in Paspalum has on germplasm conservation, genetic improvement and commercialization of cultivars. Germplasm collection and conservation can now be rethought considering the newly available information related to how diversity is allocated in nature and how it can be transferred between the sexual and apomictic germplasm using novel breeding approaches. An inventory of species and accessions conserved around the world is analyzed in relation to the main germplasm banks. Because of the importance of apomixis in Paspalum species different breeding approaches have been used and tested. Knowledge related to the inheritance of apomixis, variable expressivity of the trait and techniques for early identification of apomicts has helped to improve the efficiency of the breeding methods. Novel breeding techniques are also being developed and are described regarding its advantages and limitations. Finally, the impact of reproductive mode on the adoption of the released cultivars is discussed.
Keywords: Apomixis, Polyploidy, Plant collection, Germplasm conservation, Breeding methods
Received: 02 Jan 2019;
Accepted: 07 Oct 2019.
Copyright: © 2019 Acuña, Martínez, Zilli, Brugnoli, Espinoza, Marcón, Urbani and Quarin. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Dr. Carlos A. Acuña, Instituto de Botánica del Nordeste (IBONE-CONICET), Corrientes, Argentina, firstname.lastname@example.org