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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Reproductive mode and DNA content of Paspalum accessions from Plicatula group Reproduction and DNA content of Paspalum

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Author(s):
Goncalves, Tiago Maretti [1] ; Vigna, Bianca Baccili Zanotto [2] ; Azevedo, Ana Luisa Sousa [3] ; Ferreira, Julia Ruiz Gomes [1] ; Pozzobon, Marisa Toniolo [4] ; Favero, Alessandra Pereira [2]
Total Authors: 6
Affiliation:
[1] Univ Fed Sao Carlos, BR-13565905 Sao Carlos, SP - Brazil
[2] Embrapa Pecuaria Sudeste, Rodovia Washington Luiz Km 234, BR-13560970 Sao Carlos, SP - Brazil
[3] EMBRAPA Gado Leite, BR-36038330 Juiz De Fora, MG - Brazil
[4] Embrapa Recursos Genet & Biotecnol, BR-70770900 Brasilia, DF - Brazil
Total Affiliations: 4
Document type: Journal article
Source: FLORA; v. 279, JUN 2021.
Web of Science Citations: 0
Abstract

This study aims the reproductive and DNA content characterization of ten different Paspalum species from the Plicatula group (P. atratum, P. compressifolium, P. guenoarum, P. lenticulare, P. lepton, P. oteroi, P. plicatulum, P. rhodopedum, P. rojasii and P. wrightii), contributing to the determination of the best breeding and conservation method to be used. The DNA content of 150 accessions was estimated by flow cytometry using foliar tissues. The reproductive mode of 135 accessions was characterized by flow cytometric seed screening, and five accessions were determined by cytoembryological ovary analysis. DNA content ranged from 1.50 pg (BGP 380) to 4.27 pg (BGP 193), both from P. compressifolium species. Most of the accessions were compatible to the tetraploid level, except for BGP 281 (P. lenticulare), BGP 272 (P. rojasii), and BGP 380 (P. compressifolium), which were diploids. Accessions with tetraploid DNA content presented apomictic reproduction, whereas the three diploid accessions were sexual. These results contribute to the reproductive knowledge of species of the Plicatula group. The diploid sexual accessions identified represent important material to overcome the apomictic barrier in crosses and can be used after polyploidization as female parents in crosses with apomictic accessions in Paspalum breeding programs. (AU)

FAPESP's process: 18/18691-3 - Reproductive and cytogenetic characterization and polyploidization of sexual Paspalum accessions (Plicatula group)
Grantee:Julia Ruiz Gomes Ferreira
Support Opportunities: Scholarships in Brazil - Technical Training Program - Technical Training
FAPESP's process: 18/07624-3 - Polyploidization and characterization of P. lenticulare and P. compressifolium accessions
Grantee:Alessandra Pereira Fávero
Support Opportunities: Regular Research Grants