DNA elimination in embryogenic development of Pennisetum glaucum x Pennisetum purpureum (Poaceae) hybrids.

Vista sencilla de ítem
dc.contributorJ. D. NUNES; ANA LUISA SOUSA AZEVEDO, CNPGL; ANTONIO VANDER PEREIRA, CNPGL; C.M.P. PAULA, UFLA; J. M. S. CAMPOS, UFJF; FRANCISCO JOSE DA SILVA LEDO, CNPGL; V. B. SANTOS, Universidade Federal do Acre.
dc.creatorNUNES, J. D.
dc.creatorAZEVEDO, A. L. S.
dc.creatorPEREIRA, A. V.
dc.creatorPAULA, C. M. P.
dc.creatorCAMPOS, J. M. S.
dc.creatorLEDO, F. J. da S.
dc.creatorSANTOS, V. B.
dc.date2024-02-06T15:32:55Z
dc.date2024-02-06T15:32:55Z
dc.date2014-02-10
dc.date2013
dc.date.accessioned2026-07-07T03:51:10Z
dc.descriptionInterspecific hybridization between Napier grass (Pennisetum purpureum), which is widely grown in Brazil for cattle forage, and pearl millet (Pennisetum glaucum) has been used as a breeding strategy for the development of improved cultivars. However, the hybrid between these two species is sterile due to its triploid condition (2n = 3x = 21 chromosomes), which hinders its use in crop breeding programs. It is known that genomic alterations result from the hybridization process. In order to measure the loss of DNA during embryo development, we used flow cytometry to estimate the nuclear DNA content of triploid and tetraploid embryos produced by interspecific hybridization between Napier grass and pearl millet. The triploid and tetraploid hybrids had a mean DNA content of 4.99-4.87 and 5.25-4.84 pg, at 10 and 30 days after pollination, respectively. The mean reduction in DNA content was higher in the tetraploid hybrids. The flow cytometry results revealed progressive genomic instability in these triploid and tetraploid hybrids, with this instability causing significant alterations in the DNA content of the hybrids.
dc.identifierGenetics and Molecular Research, v. 12, n. 4, p. 4817-4826, 2013.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/979289
dc.identifierhttps://doi.org/10.4238/2013.october.22.1
dc.identifier.urihttp://hdl.handle.net/123456789/444888
dc.languageeng
dc.rightsopenAccess
dc.subjectElephant grass
dc.subjectflow cytometry
dc.subjectgrasses
dc.subjecthybridization
dc.titleDNA elimination in embryogenic development of Pennisetum glaucum x Pennisetum purpureum (Poaceae) hybrids.
dc.typeArtigo de periódico

Archivos

Colecciones

Embrapa Vacas Lecheras (CNPGL)