J.F.M. Valls
Morphological, cytogenetic, and molecular characterization of Arachis kuhlmannii Krapov. & W.C. Greg. (Leguminosae)
Arachis kuhlmannii occurs in Mato Grosso and Mato Grosso do Sul States, Brazil. Its area of occurrence partially overlaps with that of other species in the Arachis section. Because of their morphological similarities, these species are often mistaken one for another. This study aimed the correct classification of available accessions as Arachis kuhlmannii, or other .. Read More»
Genet. Mol. Res. 16(3): gmr16039733
DOI: 10.4238/gmr16039733
Crossability of Arachis valida and B genome Arachis species
The peanut (Arachis hypogaea) is an important food crop in much of the tropical and semi-tropical parts of the world. The peanut is an allotetraploid with an AABB genome formula derived from diploids A. duranensis (A genome) and A. ipaënsis (B genome). The success of an introgression program that aims to improve cultivated varieties of the peanut depends on whether the chosen B genome spec.. Read More»
Genet. Mol. Res. 14(4): 2015.December.21.30
DOI: 10.4238/2015.December.21.30
Genetic diversity of the forage peanut in the Jequitinhonha, S�£o Francisco, and Paran�£ River valleys of Brazil
Arachis pintoi and A. repens are legumes with a high forage value that are used to feed ruminants in consortium systems. Not only do they increase the persistence and quality of pastures, they are also used for ornamental and green cover. The objective of this study was to analyze microsatellite markers in order to access the genetic diversity of 65 forage peanut ge.. Read More»
Genet. Mol. Res. 15(3): gmr.15038601
DOI: 10.4238/gmr.15038601
Unusual chromosome numbers in Paspalum L. (Poaceae: Paniceae) from Brazil
Somatic chromosome numbers were determined for 20 new germplasm accessions of Paspalum, belonging to 17 species collected in Brazil. Chromosome number is reported for the first time for P. reduncum (2n = 18), P. cinerascens (2n = 20), P. cordatum (2n = 20), P. filgueirasii (2n = 24), P. ammodes (2n = 36), P. bicilium (2n = 40), P. heterotrichon (2n = 40), and P. bur.. Read More»
Genet. Mol. Res. 7(2): vol7-2gmr431
DOI: 10.4238/vol7-2gmr431
Complete asynapsis resulting in 2n pollen formation in Paspalum jesuiticum Parodi (Poaceae)
Cytological investigation revealed complete asynapsis during microsporogenesis in 2 wild accessions of Paspalum jesuiticum collected in distinct Brazilian regions. Both accessions were hexaploid (2n = 6x = 60) and 60 univalents could be counted at diakinesis. In this phase, the majority of meiocytes exhibited univalents with both chromatids. After alignment at the m.. Read More»
Genet. Mol. Res. 13(1): 2014.January.17.9
DOI: 10.4238/2014.January.17.9
Genetic variability of Brazilian Indian landraces of Arachis hypogaea L.
The Kayabi Indians who inhabit the Xingu Indigenous Park, located in West Central Brazil, have grown and managed peanuts for a long time. A great number of landraces are being maintained by these tribes and some of this germplasm has morphological traits that exceed the variation described in the taxonomic literature. Here, we analyzed the genetic variability of the.. Read More»
Genet. Mol. Res. 6(3):
Microsporogenesis in Paspalum conspersum Schrad. (Virgata group) with different ploidy levels
Knowledge about the cytology and reproductive behavior of a species is indispensable for hybridization programs. This is especially true for species belonging to the genus Paspalum, among which apomixis and a wide range of ploidy levels are frequently found. Paspalum conspersum Schrad. is a robust and warm-season perennial bunchgrass native to South America. Previous studies have indicated that.. Read More»
Genet. Mol. Res. 12(4): 2013.October.24.6
DOI: 10.4238/2013.October.24.6
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