M.G. Pereira1

Indices estimated using REML/BLUP and introduction of a super-trait for the selection of progenies in popcorn

• C. Vittorazzi
• A.T. Amaral Junior
• A.G. Guimarães
• A.P. Viana
• F.H.L. Silva
• G.F. Pena
• R.F. Daher
• I.F.S Gerhardt
• G.H.F. Oliveira
• M.G. Pereira1

Selection indices commonly utilize economic weights, which become arbitrary genetic gains. In popcorn, this is even more evident due to the negative correlation between the main characteristics of economic importance - grain yield and popping expansion. As an option in the use of classical biometrics as a selection index, the optimal procedure restricted maximum lik.. Read More»

Genet. Mol. Res. 16(3): gmr16039769

DOI: 10.4238/gmr16039769

Genetic parameters in parents and hybrids of circulant diallel in popcorn

R.M. Rangel1, A.T. Amaral Júnior1, C.A. Scapim2, S.P. Freitas Júnior1 and M.G. Pereira1

With the aim of estimating genetic parameters and identifying superior popcorn combinations, 10 parents were crossed in a circulant diallel and evaluated together with the 15 resulting hybrids at two locations in two growing seasons for grain yield, number of broken plants, number of partially husked ears and popping expansion. The hybrids were less sensitive to environmental variations than th.. Read More»

Genet. Mol. Res. 7(4):

Coconut genome size determined by flow cytometry: Tall versus Dwarf types

M. Freitas Neto1, T.N.S. Pereira1, I.G.C. Geronimo1, A.O.N. Azevedo1,S.R.R. Ramos2 and M.G. Pereira1

Coconuts (Cocos nucifera L.) are tropical palm trees that are classified into Tall and Dwarf types based on height, and both types are diploid (2n = 2x = 32 chromosomes). The reproduction mode is autogamous for Dwarf types and allogamous for Tall types. One hypothesis for the origin of the Dwarf coconut suggests that it is a Tall variant that resulted from either mutation or inbreeding, and dif.. Read More»

Genet. Mol. Res. 15(1): gmr.15017470

DOI: 10.4238/gmr.15017470

Genetic-molecular characterization of backcross generations for sexual conversion in papaya (Carica papaya L.)

H.C.C. Ramos1, M.G. Pereira1, T.N.S. Pereira1, G.B.A. Barros1 and G.A. Ferreguetti2

The low number of improved cultivars limits the expansion of the papaya crop, particularly because of the time required for the development of new varieties using classical procedures. Molecular techniques associated with conventional procedures accelerate this process and allow targeted improvements. Thus, we used microsatellite markers to perform genetic-molecular characterization of papaya g.. Read More»

Genet. Mol. Res. 13(4): 2014.December.4.32

DOI: 10.4238/2014.December.4.32