Zea Mays
Maize endophytic bacteria as mineral phosphate solubilizers
Authors: C.S. de Abreu, J.E.F. Figueiredo, C.A. Oliveira, V.L. dos Santos, E.A. Gomes, V.P. Ribeiro, B.A. Barros, U.G.P. Lana and I.E. Marriel
In the present study, we demonstrated the in vitro activity of endophytic phosphate-solubilizing bacteria (PSB). Fifty-five endophytic PSB that were isolated from sap, leaves, and roots of maize were tested for their ability to solubilize tricalcium phosphate and produce organic acid. Partial sequencing of the 16S rRNA-encodin.. Read More»
- Genet. Mol. Res. 16(1):
- gmr16019294
- DOI:
- 10.4238/gmr16019294
Stability and adaptability of popcorn genotypes in the State of Rio de Janeiro, Brazil
Authors: G.F. Pena A.T. do Amaral J�ºnior L.S.A. Gon�§alves L.S. Candido C. Vittorazzi R.M. Ribeiro S.P. Freitas J�ºnior
This study aimed to obtain estimates of stability and adaptability of phase launched materials and materials recommended in the country, for the northern and northwestern regions of Rio de Janeiro State, Brazil, and made a comparative analysis of different methods to evaluate stability and adaptability of grain yield and popping expansion. To this end, 10 ge.. Read More»
- Genet. Mol. Res. 11(3):
- 2012.August.31.1
- DOI:
- 10.4238/2012.August.31.1
Genetic distances between popcorn populations based on molecular markers and correlations with heterosis estimates made by diallel analysis of hybrids
Authors: R.E.F. Munhoz1, A.J. Prioli1, A.T. Amaral J�ºnior2, C.A. Scapim1 and G.A. Simon1
Diallel analysis was used to obtain information on combining ability, heterosis, estimates of genetic distances by random amplified polymorphic DNA (RAPD) and on their correlations with heterosis, for the popcorn varieties RS 20, UNB2, CMS 43, CMS 42, Zélia, UEM J1, UEM M2, Beija-Flor, and Viçosa, which were crossed to obtain all possib.. Read More»
- Genet. Mol. Res. 8(3):
- vol8-3gmr592
- DOI:
- 10.4238/vol8-3gmr592
Analysis of genetic traits for drought tolerance in maize
Authors: R.W. Muhammad, A. Qayyum, A. Hamza, M.Q. Ahmad, N.S. Naseer, S. Liaqat, B. Ahmad, W. Malik and E. Noor
Fifty-four genotypes of maize were crossed and evaluated in the field during the crop season in February 2012 under both normal and water stress conditions. To identify the major parameters responsible for variation among genotypes, single linkage cluster analysis and principle component analysis (PCA) were carried out. Thirteen characters were studied. T.. Read More»
- Genet. Mol. Res. 14(4):
- 2015.October.28.15
- DOI:
- 10.4238/2015.October.28.15
Full-sib reciprocal recurrent selection in the maize populations Cimmyt and Piran�£o
Authors: K.S. da Cunha M.G. Pereira L.S.A. Gon�§alves A.P.C.G. Berilli E.C. de Oliveira H.C.C. Ramos A.T. do Amaral J�ºnior
We estimated the genetic gains of the 12th cycle of reciprocal recurrent selection for maize traits of agronomic interest. We used 23 ISSR molecular markers in an attempt to maximize genetic variability among and within populations based on selection of S1 progenies. To this end, 138 full-sib families were evaluated in a randomized block design in two enviro.. Read More»
- Genet. Mol. Res. 11(3):
- 2012.September.25.8
- DOI:
- 10.4238/2012.September.25.8
REML/BLUP and sequential path analysis in estimating genotypic values and interrelationships among simple maize grain yield-related traits
Authors: T. Olivoto, M. Nardino, I.R. Carvalho3, D.N. Follmann4, M. Ferrari3, V.J. Szareski5, A.J. de Pelegrin3 and V.Q. de Souza6
Methodologies using restricted maximum likelihood/best linear unbiased prediction (REML/BLUP) in combination with sequential path analysis in maize are still limited in the literature. Therefore, the aims of this study were: i) to use REML/BLUP-based procedures in order to estimate variance components, genetic parameters, and .. Read More»
- Genet. Mol. Res. 16(1):
- gmr16019525
- DOI:
- 10.4238/gmr16019525
Genetic progress in the UNB-2U population of popcorn under recurrent selection in Rio de Janeiro, Brazil
Authors: R.M. Ribeiro, A.T. do Amaral J�ºnior, L.S.A. Gon�§alves, L.S. Candido, T.R.C. Silva and G.F. Pena
As part of the Universidade Estadual do Norte Fluminense recurrent selection program of popcorn, we evaluated full-sib families of the sixth cycle of recurrent selection and estimated genetic progress for grain yield and expansion capacity. We assessed 200 full-sib families for 10 agronomic traits, in a randomized block design.. Read More»
- Genet. Mol. Res. 11(2):
- 2012.May.15.12
- DOI:
- 10.4238/2012.May.15.12
Multivariate approach in popcorn genotypes using the Ward-MLM strategy: morpho-agronomic analysis and incidence of Fusarium spp
Authors: R.N.F. Kurosawa, A.T. do Amaral Junior, F.H.L. Silva, A. dos Santos,M. Vivas, S.H. Kamphorst and G.F. Pena
The multivariate analyses are useful tools to estimate the genetic variability between accessions. In the breeding programs, the Ward-Modified Location Model (MLM) multivariate method has been a powerful strategy to quantify variability using quantitative and qualitative variables simultaneously. The present study was proposed.. Read More»
- Genet. Mol. Res. 16(1):
- gmr16019528
- DOI:
- 10.4238/gmr16019528
Diallel analysis of leaf disease resistance in inbred Brazilian popcorn cultivars
Authors: R.A. Vieira, C.A. Scapim, L.M. Moterle, D.J. Tessmann, T.V. Conrado and A.T. Amaral J�ºnior
We estimated general and specific combining abilities and examined resistance to northern leaf blight (Exserohilum turcicum) and to gray leaf spot (Cercospora zeae-maydis) in a set of nine inbred popcorn lines. These inbreds were crossed in a complete diallel scheme without reciprocals, which produced 36 F1 hybrids. Two experi.. Read More»
- Genet. Mol. Res. 8(4):
- vol8-4gmr655
- DOI:
- 10.4238/vol8-4gmr655
Inbreeding depression in single, three way and double-cross hybrids of maize
Authors: F.B.S. Botelho, A.T. Bruzi, I.P. Lima, C.S. Rodrigues and R.T. de C. Botelho
Currently, one of the acclaimed alternatives for increasing maize yield is accomplished through utilization of heterosis in hybrid cultivars. However, upon performing crosses between related pairs, there are losses due to inbreeding depression. Thus, the aim of this study was to estimate inbreeding depression and the contribution of loci in heterozygosity.. Read More»
- Genet. Mol. Res. 15(3):
- gmr.15035497
- DOI:
- 10.4238/gmr.15035497