Research Article

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09/30/2011
Early selection; Genetic effects; Grain yield; Hybrids; Seed quality tests; Zea mays L.

Studies of genetic effects of early selection of maize based on seed quality traits are rare, especially those that use materials from different heterotic groups. These studies are also useful in tropical environments and for the advancement of sustainable agriculture with cropping during seasons not commonly used for cultivation. We estimated, through diallel crosses, the predominant ... more

L.M. Moterle; A.L. Braccini; C.A. Scapim; R.J.B. Pinto; L.S.A. Gonçalves; A.Tdo Amaral Júnior; T.R.C. Silva
10/19/2010
Breeding; Hybrids; Meiosis; Silage corn

In breeding programs, commercial hybrids are frequently used as a source of inbred lines to obtain new hybrids. Considering that maize production is dependent on viable gametes, the selection of populations to obtain inbred lines with high meiotic stability could contribute to the formation of new silage corn hybrids adapted to specific region. We evaluated the meiotic stability of five ... more

V.F. Souza; M.S. Pagliarini; C.A. Scapim; M. Rodovalho; M.V. Faria
06/28/2013
Chickpea; DNA fingerprinting; Genetic diversity; Hybrids; RAPD markers

The intensity of genetic diversity amongst chickpea genotypes and their crosses is unknown. The current study investigated the genetic diversity of chickpea genotypes and their F1 crosses by using random amplified polymorphic DNA (RAPD) markers. We assessed the variation among six chickpea genotypes and 15 F1 crosses with the RAPD markers. The six parents and their ... more

K. Mahmood; W. Nazeer; M. Naeem; S. Freed; M.A. Khan; G. Abbas; M. Iqbal; A.R. Kulachi; S.A. Sajid; M.A. Sadiq; M. Saleem
08/13/2012
Aegilops juvenalis; Genetic similarity; Hybrids; ISSR; Triticale

Wide hybridization expands the gene pool of cultivated species and can produce genotypes with practical value, often resistant to diseases. In plants, ISSRs are often used for hybrid identification as well as for diversity evaluation. We estimated genetic similarity among advanced genetic stocks of triticale hybrids and identified Aegilops juvenalis introgressions into triticale ... more

A. Gradzielewska; D. Gruszecka; J. Leśniowska-Nowak; E. Paczos-Grzęda
12/19/2014
Additive effect; Biomass; Diallel; Hybrids; Quality traits

Elephant grass is a tropical forage plant widely distributed throughout Brazil. It was first exclusively used in the livestock sector as cattle feed. The grass is characterized by its high productivity and photosynthetic capacity and is considered as an alternative source of renewable energy. Here, we estimated the general combining ability of the parents and specific combining ability of ... more

R.F. Daher; L.B. Souza; G.A. Gravina; J.C. Machado; H.C.C. Ramos; V.Q.R. Silva; B.R.S. Menezes; L.S.A. Schneider; M.L.F. Oliveira; R.D. Gottardo
08/26/2014
Breeding; General combining ability; Griffing; Grits; Hybrids; Partial correlation; specific combining ability

Corn grits are used for various purposes such as flakes, snacks, livestock feed, hominy, extruded products, beer, etc. The grit size proportion varies according to the hybrid, and thus, once the use of the grits is linked to the particle size, determining the genetic effects is essential to develop hybrids for any specific use. For this purpose a complete diallel series of crosses, ... more

T.V. Conrado; C.A. Scapim; L.S. Bignotto; R.J.B. Pinto; I.L.J. Freitas; A.T. Amaral; A.C. Pinheiro
01/28/2014
Dactylis glomerata; Hybrids; Morphological characters; SSR

Six F1 populations derived from crosses among 4 orchardgrass (Dactylis glomerata L.) cultivars were studied by morphological and simple sequence repeat molecular markers to test for hybrid vigor and a correlation between genetic distance and heterosis. Heterosis was observed for days to length of culm, leaf traits, tiller numbers, etc. Significant differences between ... more

Y.F. Zhao; X.Q. Zhang; X. Ma; W.G. Xie; L.K. Huang
09/22/2015
Cytogenetics; Meiosis; Plant breeding; Pollen viability; X Triticosecale Wittmack

Triticale (X Triticosecale Wittmack) is an intergeneric hybrid derived from a cross between wheat and rye. As a newly created allopolyploid, the plant shows instabilities during the meiotic process, which may result in the loss of fertility. This genomic instability has hindered the success of triticale-breeding programs. Therefore, strategies should be developed to obtain stable ... more

R.M. Giacomin; R. Assis; S.P. Brammer; N. Junior; P.R. Da-Silva
09/08/2015
Agronomic trait; Hybrid; Mungbean; Physiological trait; Plant breeding

Heterotic effects of mungbean hybrids from 25 crosses between parents differing in 9 agronomic and physiological traits were evaluated for various selected traits and seed yield. Significant heteroses were observed in most selected traits, except for the number of seeds per plant. When the heterosis of seed yield was evaluated in these hybrids, significant heterosis was found in 9 crosses, ... more

P.A. Tantasawat; P. Khajudparn; T. Prajongjai; O. Poolsawat
12/28/2015
Bayesian models; Epistasis; Heterosis; Plant breeding

The prediction of single-cross hybrids in maize is a promising technique for optimizing the use of financial resources in a breeding program. This study aimed to evaluate Genomic Best Linear Unbiased Predictors models for hybrid prediction and compare them with the Bayesian Ridge Regression, Bayes A, Bayesian LASSO, Bayes C, Bayes B, and Reproducing Kernel Hilbert Spaces Regression ... more

J.P.R. Santos; H.D. Pereira; R.G. Von Pinho; L.P.M. Pires; R.B. Camargos; M. Balestre

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