Repeatability
Determination of the number of harvests to select elite sugarcane genotypes in NE Brazil
Authors: J.A. Dutra Filho, T.C. Junior, D. E. Simoes Neto, L. S. Souto, Romulo Gil de Luna A.S. Souza
Sixty-eight sugarcane genotypes were evaluated to determine the number of harvests required to select new genotypes in the sugarcane belt in the state of Pernambuco, northeast Brazil. Using a random block design, the following parameters were evaluated: (i) polarizable sugars (POL) per hectare, in metric tons (TPH); (ii) culm .. Read More»
- Genet. Mol. Res. 17(1):
- gmr16039869
- DOI:
- 10.4238/gmr16039869
Minimum number of measurements for evaluating Bertholletia excelsa
Authors: A.B. Baldoni, H. Tonini, F.D. Tardin, S.C.C. Botelho and P.E. Teodoro
Repeatability studies on fruit species are of great importance to identify the minimum number of measurements necessary to accurately select superior genotypes. This study aimed to identify the most efficient method to estimate the repeatability coefficient (r) and predict the minimum number of measurements needed for a more a.. Read More»
- Genet. Mol. Res. 16(3):
- gmr16039783
- DOI:
- 10.4238/gmr16039783
Minimum number of measurements for evaluating soursop (Annona muricata L.) yield
Authors: C.F.B. S�¡nchez, P.E. Teodoro, S. Londo�±o, L.A. Silva, L.A. Peixoto and L.L. Bhering
Repeatability studies on fruit species are of great importance to identify the minimum number of measurements necessary to accurately select superior genotypes. This study aimed to identify the most efficient method to estimate the repeatability coefficient (r) and predict the minimum number of measurements needed for a more a.. Read More»
- Genet. Mol. Res. 16(2):
- gmr16029594
- DOI:
- 10.4238/gmr16029594
Environmental and genetic factors affecting the weaning-estrus interval in sows
Authors: C.D.S. Leite, J.F. Lui, L.G. Albuquerque and D.N.M. Alves
We examined the effects of environmental and genetic factors on the weaning-to-estrus interval (WEI) in sows. In order to perform the analyses of the environmental factors, 8104 observations of the 1st to the 6th WEI were carried out, while 6548 observations of the 1st to the 3rd WEI were carried out for the analyses of geneti.. Read More»
- Genet. Mol. Res. 10(4):
- 2011.November.4.2
- DOI:
- 10.4238/2011.November.4.2
Optimizing reproducibility evaluation for random amplified polymorphic DNA markers
Authors: J.R. Ramos, M.P.C. Telles, J.A.F. Diniz-Filho, T.N. Soares, D.B. Melo and G. Oliveira
The random amplified polymorphic DNA (RAPD) technique is often criticized because it usually shows low levels of repeatability; thus it can generate spurious bands. These problems can be partially overcome by rigid laboratory protocols and by performing repeatability tests. However, because it is expensive and time-consuming to obtain genetic data twice f.. Read More»
- Genet. Mol. Res. 7(4):
- vol7-4gmr520
- DOI:
- 10.4238/vol7-4gmr520
Phenotypic and genetic parameters compared during repeated measures of longissimus muscle area and subcutaneous fat thickness in Nelore cattle
Authors: T.R. Pinheiro, M.E.Z. Mercadante, L.G. Albuquerque, J.N.S.G. Cyrillo and R.H. Branco
Real-time ultrasound is currently used for in vivo carcass evaluation of beef cattle. We estimated heritability and repeatability coefficients for ultrasound-measured carcass traits in Nelore cattle. We measured longissimus muscle area, backfat thickness, and rump fat thickness in male and female animals ranging in age from 10.. Read More»
- Genet. Mol. Res. 10(4):
- 2011.November.29.5
- DOI:
- 10.4238/2011.November.29.5
Phenotypic correlations between ovum pick-up in vitro production traits and pregnancy rates in Zebu cows
Authors: W.H.O. Vega, C.R. Quirino, R.V. Serapi�£o, C.S. Oliveira and A. Pacheco
The growth of the Gyr breed in Brazil in terms of genetic gain for milk, along with conditions for market, has led to the use of ovum pick-up in vitro production (OPU-IVP) as a leader in biotechnology for the multiplication of genetic material. The aim of this study was to investigate phenotypic correlations between OPU-IVP-linked characteristics and preg.. Read More»
- Genet. Mol. Res. 14(3):
- 2015.July.3.9
- DOI:
- 10.4238/2015.July.3.9
Potential of hypocotyl diameter in family selection aiming at plant architecture improvement of common bean
Authors: A.M.C. Oliveira, R.O. Batista, P.C.S. Carneiro, J.E.S. Carneiro and C.D. Cruz
Cultivars of common bean with more erect plant architecture and greater tolerance to degree of lodging are required by producers. Thus, to evaluate the potential of hypocotyl diameter (HD) in family selection for plant architecture improvement of common bean, the HDs of 32 F2 plants were measured in 3 distinct populations, and the characteristics related .. Read More»
- Genet. Mol. Res. 14(3):
- http://dx.doi.org/2015.September.28.3
- DOI:
- http://dx.doi.org/10.4238/2015.September.28.3
Genetic and environmental factors that influence production and quality of milk of Alpine and Saanen goats
Authors: L.F. Brito, F.G. Silva, A.L.P. Melo, G.C. Caetano, R.A. Torres, M.T. Rodrigues and G.R.O. Menezes
Data from 1279 lactations of 783 Alpine and Saanen goats of the herd of our university in Minas Gerais, Brazil, were used to study environmental effects on and to estimate genetic parameters for milk production until 270 days of lactation (MP270) and for production and percentages of fat (PFAT and %FAT), protein (PPROT and %PR.. Read More»
- Genet. Mol. Res. 10(4):
- 2011.December.14.9
- DOI:
- 10.4238/2011.December.14.9
Number of repetitions for evaluating technological traits in cotton genotypes
Authors: L.P. Carvalho, F.J.C. Farias, C.L. Morello, J.I.S. Rodrigues and P.E. Teodoro
With the changes in spinning technology, technological cotton traits, such as fiber length, fiber uniformity, fiber strength, fineness, fiber maturity, percentage of fibers, and short fiber index, are of great importance for selecting cotton genotypes. However, for accurate discrimination of genotypes, it is important that these traits are evaluated with .. Read More»
- Genet. Mol. Res. 15(3):
- gmr.15038557
- DOI:
- 10.4238/gmr.15038557