scholarly journals Evaluation of tropical maize inbred lines for resistance to two stem borer species, Busseola fusca and Chilo partellus

2016 ◽  
Vol 8 (2) ◽  
pp. 23-33
Author(s):  
Derera John ◽  
Murenga Mwimali ◽  
Mugo Stephen ◽  
Tongoona Pangirayi ◽  
Lilian Gichuru
Keyword(s):  
Chilo Partellus ◽  
Busseola Fusca ◽  
Stem Borer ◽  
Inbred Lines ◽  
Tropical Maize ◽  
Maize Inbred Lines

Combining ability for stem borer resistance and heterotic orientation of maize inbred lines using CIMMYT single cross testers under Busseola fusca infestation

Euphytica ◽  
2015 ◽  
Vol 208 (2) ◽  
pp. 323-335
Author(s):  
Murenga Mwimali ◽  
John Derera ◽  
Pangirayi Tongoona ◽  
Stephen Mugo ◽  
Lilian Gichuru
Keyword(s):  
Combining Ability ◽  
Busseola Fusca ◽  
Stem Borer ◽  
Inbred Lines ◽  
Maize Inbred Lines ◽  
Single Cross

Genotypic variation and relationships among traits for root morphology in a panel of tropical maize inbred lines under contrasting nitrogen levels

Euphytica ◽  
2019 ◽  
Vol 215 (3) ◽  
Author(s):  
Lívia Gomes Torres ◽  
Diego Gonçalves Caixeta ◽  
Wemerson Mendonça Rezende ◽  
Andreia Schuster ◽  
Camila Ferreira Azevedo ◽  
...  
Keyword(s):  
Root Morphology ◽  
Genotypic Variation ◽  
Inbred Lines ◽  
Tropical Maize ◽  
Nitrogen Levels ◽  
Maize Inbred Lines

scholarly journals Phenotypic and molecular characterization of a set of tropical maize inbred lines from a public breeding program in Brazil

BMC Genomics ◽  
2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Sirlene Viana de Faria ◽  
Leandro Tonello Zuffo ◽  
Wemerson Mendonça Rezende ◽  
Diego Gonçalves Caixeta ◽  
Hélcio Duarte Pereira ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Inbred Lines ◽  
Breeding Program ◽  
Tropical Maize ◽  
Maize Breeding ◽  
Breeding Programs ◽  
The Public ◽  
Maize Inbred Lines

Abstract Background The characterization of genetic diversity and population differentiation for maize inbred lines from breeding programs is of great value in assisting breeders in maintaining and potentially increasing the rate of genetic gain. In our study, we characterized a set of 187 tropical maize inbred lines from the public breeding program of the Universidade Federal de Viçosa (UFV) in Brazil based on 18 agronomic traits and 3,083 single nucleotide polymorphisms (SNP) markers to evaluate whether this set of inbred lines represents a panel of tropical maize inbred lines for association mapping analysis and investigate the population structure and patterns of relationships among the inbred lines from UFV for better exploitation in our maize breeding program. Results Our results showed that there was large phenotypic and genotypic variation in the set of tropical maize inbred lines from the UFV maize breeding program. We also found high genetic diversity (GD = 0.34) and low pairwise kinship coefficients among the maize inbred lines (only approximately 4.00 % of the pairwise relative kinship was above 0.50) in the set of inbred lines. The LD decay distance over all ten chromosomes in the entire set of maize lines with r2 = 0.1 was 276,237 kb. Concerning the population structure, our results from the model-based STRUCTURE and principal component analysis methods distinguished the inbred lines into three subpopulations, with high consistency maintained between both results. Additionally, the clustering analysis based on phenotypic and molecular data grouped the inbred lines into 14 and 22 genetic divergence clusters, respectively. Conclusions Our results indicate that the set of tropical maize inbred lines from UFV maize breeding programs can comprise a panel of tropical maize inbred lines suitable for a genome-wide association study to dissect the variation of complex quantitative traits in maize, mainly in tropical environments. In addition, our results will be very useful for assisting us in the assignment of heterotic groups and the selection of the best parental combinations for new breeding crosses, mapping populations, mapping synthetic populations, guiding crosses that target highly heterotic and yielding hybrids, and predicting untested hybrids in the public breeding program UFV.

scholarly journals Potential in a collection of adapted and exotic tropical maize inbred lines as resistance source for stem borers

2018 ◽  
Vol 10 (8) ◽  
pp. 183-190 ◽  
Author(s):  
Olaitan Oloyede-Kamiyo Qudrah ◽  
Oyewole Ajala Sam ◽  
Oluwatoyosi Job Anthony
Keyword(s):  
Inbred Lines ◽  
Tropical Maize ◽  
Stem Borers ◽  
Maize Inbred Lines ◽  
Resistance Source

Combining Ability, Genetic Distances, and Heterosis among Elite CIMMYT and IITA Tropical Maize Inbred Lines

Crop Science ◽  
2009 ◽  
Vol 49 (4) ◽  
pp. 1201-1210 ◽  
Author(s):  
Thanda Dhliwayo ◽  
Kevin Pixley ◽  
Abebe Menkir ◽  
Marilyn Warburton
Keyword(s):  
Combining Ability ◽  
Inbred Lines ◽  
Genetic Distances ◽  
Tropical Maize ◽  
Maize Inbred Lines

Genetic diversity in tropical maize inbred lines: heterotic group assignment and hybrid performance determined by RFLP markers

2000 ◽  
Vol 119 (6) ◽  
pp. 491-496 ◽  
Author(s):  
L. L. Benchimol ◽  
C. L. de Souza jr ◽  
A. A. F. Garcia ◽  
P. M. S. Kono ◽  
C. A. Mangolin ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Inbred Lines ◽  
Heterotic Group ◽  
Rflp Markers ◽  
Hybrid Performance ◽  
Tropical Maize ◽  
Group Assignment ◽  
Maize Inbred Lines
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