Plant Breeding
Cassava in South America, Brazil�s contribution and the lesson to be learned from India
Authors: Nagib M.A. Nassar
South America is responsible for about half of the cassava world production. In the 1970’s productivity of the crop on the continent was about 15 ton/ha, and dropped continuously until reaching 12 ton/ha in 2004. India’s productivity of cassava increased from 10 ton/ ha in the 1970’s to 28 ton/ha in 2004. Bra.. Read More»
- Genet. Mol. Res. 5(4):
Establishment of the genomic in situ hybridization (GISH) technique for analysis in interspecific hybrids of Passiflora
Authors: C.A.F. Melo, G.S. Silva and M.M. Souza
The genomic in situ hybridization (GISH) technique was applied to Passiflora interspecific F1 HD13-133 hybrids (Passiflora sublanceolata x Passiflora foetida) and HD15-101 (Passiflora gardineri x Passiflora gibertii), and the backcrossed hybrids (BC1) HD18-106 and HD18-113 (Passiflora sublanceolata x HD13-133). GISH was performed using genomic probes prep.. Read More»
- Genet. Mol. Res. 14(1):
- 2015.March.27.4
- DOI:
- 10.4238/2015.March.27.4
Genetic progress in homogeneous regions of wheat cultivation in Rio Grande do Sul State, Brazil
Authors: D.N. Follmann, A. Cargnelutti Filho, A.D. L�ºcio, V.Q. de Souza, M. Caraffa, C.A. Wartha
The State of Rio Grande do Sul (RS) stands out as the largest wheat producer in Brazil. Wheat is the most emphasized winter cereal in RS, attracting public and private investments directed to wheat genetic breeding. The study of genetic progress should be performed routinely at breeding programs to study the behavior of cultiv.. Read More»
- Genet. Mol. Res. 16(1):
- gmr16019517
- DOI:
- 10.4238/gmr16019517
Resistance of soybean genotypes to Sclerotinia sclerotiorum isolates in different incubation environments
Authors: L.H.S. Castro, A.A. Figueir�³, A.P.O. Nogueira, S.J. Clough and F.C. Juliatti
Sclerotinia sclerotiorum is an important soybean pathogen. The objectives of this study were to evaluate levels of resistance of soybean genotypes to the fungus, and to determine the effects of different incubation environments on host resistance and pathogen aggressiveness. Two experiments were conducted using 103 genotypes f.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049061
- DOI:
- 10.4238/gmr15049061
Genetic diversity among coffee tree progenies Big Coffee VL based on growth traits and production
Authors: J.A. Silva, S.P. Carvalho, A.T. Bruzi, R.J. Guimar�£es, L.L. Oliveira and L.C. Sim�µes
In a coffee plantation of a coffee ‘Acaiá’ cultivar (Coffea arabica), on the Midwest of Minas Gerais in Capitólio city, a different kind of coffee tree was found (1989), possibly due to a mutation. It presented larger leaves and grains than those of conventional coffee trees and was named as “Big Coffee VL.” The aim o.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049066
- DOI:
- 10.4238/gmr15049066
Revisiting the Brazilian scenario of registry and protection of cultivars: an analysis of the period from 1998 to 2010, its dynamics and legal observations
Authors: C.D. Marinho, F.J.O. Martins, S.C.S. Amaral, A.T. Amaral J�ºnior, L.S.A. Gon�§alves and M.P. de Mello
During the last 20 years, the national production of grains has increased 156.1%; productivity increased 93.8% and there has been an increase of 29.1% in cultivated area. Currently, agribusiness is responsible for 40% of Brazilian exports. Nevertheless, there is little quantitative information on the main plant species of econ.. Read More»
- Genet. Mol. Res. 10(2):
Search for methylation-sensitive amplification polymorphisms in mutant figs
Authors: M.G.F. Rodrigues, A.B.G. Martins, B.W. Bertoni, A. Figueira and S. Giuliatti
Fig (Ficus carica) breeding programs that use conventional approaches to develop new cultivars are rare, owing to limited genetic variability and the difficulty in obtaining plants via gamete fusion. Cytosine methylation in plants leads to gene repression, thereby affecting transcription without changing the DNA sequence. Previous studies using random amp.. Read More»
- Genet. Mol. Res. 12(3):
- 2013.July.8.8
- DOI:
- 10.4238/2013.July.8.8
Acyl sugars and whitefly (Bemisia tabaci) resistance in segregating populations of tomato genotypes
Authors: D.M. Dias, J.T.V. Resende, J.C. Marodin, R. Matos, I.F. Lustosa and N.C.V. Resende
The wild tomato, Solanum pennellii, is an important source of resistance genes against tomato pests. This resistance is due to the presence of acyl sugars (AS), which are allelochemicals that have negative effects on arthropod pests. There are no commercially available tomato cultivars that exhibit significant levels of resist.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15027788
- DOI:
- 10.4238/gmr.15027788
Geometry applied to breeding common beans (Phaseolus vulgaris)
Authors: J.G. Lima and M.A.P. Ramalho
The primary components of common bean (Phaseolus vulgaris) grain yield (W) are the number of pods (X), the number of grains per pod (Y), and the weight of the grains (Z). In 1964, Grafius suggested using geometry in plant breeding; W corresponds to the volume of a parallelepiped with three axes, X, Y, and Z. Because the cube i.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15027873
- DOI:
- 10.4238/gmr.15027873
Experimental strategies in carrying out VCU for tobacco crop I: plot design and size
Authors: F.H.R.B. Toledo, M.A.P. Ramalho, C.E. Pulcinelli and A.T. Bruzi
We aimed to establish standards for tobacco Valor de Cultivo e Uso (VCU) in Brazil. We obtained information regarding the size and design of plots of two varietal groups of tobacco (Virginia and Burley). Ten inbred lines of each varietal group were evaluated in a randomized complete block design with four replications. The plot contained 42 plants with si.. Read More»
- Genet. Mol. Res. 12(3):
- 2013.September.19.8
- DOI:
- 10.4238/2013.September.19.8