Zea Mays
Bulk segregant analysis (BSA) for improving cold stress resistance in maize using SSR markers
Authors: M.Q.U. Farooqi, K.J. Sa, T.K. Hong and J.K. Lee
In this study, eight inbred maize lines with high or low tolerance to cold temperature were investigated using bulk segregant analysis (BSA). Genetic diversity and genetic relationships were investigated using 100 simple sequence repeat (SSR) markers linked to cold tolerance in maize. A total of 319 alleles were identified. Am.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049326
- DOI:
- 10.4238/gmr15049326
Genetic variability affecting Exserohilum turcicum resistance in popcorn lines grown under high and low phosphorus conditions
Authors: A.T. Amaral Jr., R.M. Ribeiro, P.H.D. Santos, T.P.S. Poltronieri, J.M.S. Vivas, I.F.S. Gerhardt, B.M. Carvalho, C.S. Freitas and S.B. Miranda
Northern leaf blight (NLB), caused by Exserohilum turcicum, is one of the main foliar diseases that affect popcorn culture. Farmers use many control measures to minimize damage caused by this disease, among which, the use of cultivars with genetic resistance is the most effective and economical. The aim of this study was to in.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049399
- DOI:
- 10.4238/gmr15049399
Proposal of a super trait for the optimum selection of popcorn progenies based on path analysis
Authors: A.T. do Amaral J�ºnior, A. dos Santos, I.F.S. Gerhardt, R.N.F. Kurosawa, N.F. Moreira, M.G. Pereira, G. de A. Gravina and F.H. de L. Silva
A challenge faced by popcorn breeding programs is the existence of a negative correlation between the two main traits, popping expansion and yield, which hinders simultaneous gains. The objective of this study was to investigate the use of a new variable or super trait, which favors the reliable selection of superior progenies.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049309
- DOI:
- 10.4238/gmr15049309
Evaluation on the germplasm of maize (Zea mays L.) landraces from southwest China
Authors: F.B. Chen, Q.L. Yao, H.F. Liu and P. Fang
Because of their local adaptation and economic factors that limit the adoption of commercial hybrids, farmer-saved maize landraces are still grown over a considerable area concentrated in southwest China. To evaluate the potential of using maize landraces, the germplasm characteristics of 96 landraces from southwest China were.. Read More»
- Genet. Mol. Res. 15(4):
- gmr15049160
- DOI:
- 10.4238/gmr15049160
Efficiency of RAPD versus SSR markers for determining genetic diversity among popcorn lines
Authors: A.A. Leal, C.A. Mangolin, A.T. do Amaral J�ºnior, L.S.A. Gon�§alves, C.A. Scapim, A.S. Mott, I.B.O. Eloi, V. Cordov�©s and M.F.P. da Silva
Using only one type of marker to quantify genetic diversity generates results that have been questioned in terms of reliability, when compared to the combined use of different markers. To compare the efficiency of the use of single versus multiple markers, we quantified genetic diversity among 10 S7 inbred popcorn lines using .. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1gmr692
- DOI:
- 10.4238/vol9-1gmr692
Selection index based on the relative importance of traits and possibilities in breeding popcorn
Authors: R.A. Vieira, R. Rocha, C.A. Scapim, A.T. Amaral J�ºnior and M. Vivas
One of the major difficulties faced by popcorn breeders is the negative correlation between popping expansion (PE) and grain yield (GY). It is necessary to overcome this difficulty to obtain promising genotypes. One helpful tool in this process is a selection index because it allows multiple features of interest to be selected.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15027719
- DOI:
- 10.4238/gmr.15027719
Improvement of a popcorn population using selection indexes from a fourth cycle of recurrent selection program carried out in two different environments
Authors: A.T. Amaral J�ºnior, S.P. Freitas J�ºnior, R.M. Rangel, G.F. Pena, R.M. Ribeiro, R.C. Morais and A.R. Schuelter
We estimated genetic gains for popcorn varieties using selection indexes in a fourth cycle of intrapopulation recurrent selection developed in the campus of the Universidade Estadual do Norte Fluminense. Two hundred full-sib families were obtained from the popcorn population UNB-2U of the third recurrent selection cycle. The p.. Read More»
- Genet. Mol. Res. 9(1):
- vol9-1gmr702
- DOI:
- 10.4238/vol9-1gmr702
Physiological quality and gene expression related to heat-resistant proteins at different stages of development of maize seeds
Authors: T. Andrade, E.V.R. Von Pinho, R.G. Von Pinho, G.E. Oliveira, V. Andrade and J.S. Fernandes
We quantified and characterized the expression of heat-resistant proteins during seed development of maize lines with distinct levels of tolerance to high drying temperature. A corn field was planted for multiplication of seeds of different lines, two tolerant and two non-tolerant to high drying temperatures. Harvest of the seeds was carried out at variou.. Read More»
- Genet. Mol. Res. 12(3):
- 2013.September.13.7
- DOI:
- 10.4238/2013.September.13.7
Genetic diversity in elite inbred lines of maize and its association with heterosis
Authors: E.H. Fernandes, I. Schuster, C.A. Scapim, E.S.N. Vieira and M.M.D. Coan
The objective of the current study was to apply molecular markers (microsatellites) in the analysis of genetic diversity of 48 lines of the elite maize germplasm stored in the bank of the Cooperativa Central de Pesquisa Agrícola - Coodetec, PR, Brazil, and estimate the correlation between genetic distance and heterosis and hybrid performance from t.. Read More»
- Genet. Mol. Res. 14(2):
- 2015.June.12.3
- DOI:
- 10.4238/2015.June.12.3
Screening of inbred popcorn lines for tolerance to low phosphorus
Authors: O.J.A.P. Santos, L.S.A. Gon�§alves, C.A. Scapim, de S.M. de Sousa, C.R. Castro, V. Y. Baba and A.L.M. de Oliveira
Increasing phosphorus use efficiency in agriculture is essential for sustainable food production. Thus, the aims of this study were: i) to identify phosphorus use efficiency (PUE) in popcorn lines during the early plant stages, ii) to study the relationship between traits correlated with PUE, and iii) to analyze genetic divers.. Read More»
- Genet. Mol. Res. 15(2):
- gmr.15027519
- DOI:
- 10.4238/gmr.15027519