Research Article

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Differentially expressed gene; Grain filling stage; Heterosis; Hybrid millet

Heterosis has been widely used in crop breeding and production. However, a shortage of genes known to function in heterosis significantly limits our understanding of the molecular basis underlying heterosis. Here, we report 740 differentially expressed genes (DEGs) in the leaves of the hybrid millet Zhang No.5 and its parents at the grain filling stage determined using Solexa Illumina ... more

Z.H. Liu; H.M. Zhang; G.L. Li; Y.M. Zhang; H.C. Li; X.L. Guo
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cDNA-AFLP; Heterosis; Non-additive gene expression; Transcriptome level; Zea mays

Heterosis has greatly contributed to conventional plant breeding and is widely used to increase crop plant productivity. However, although some studies have explored the mechanisms of heterosis at the genomic and transcriptome level, these mechanisms still remain unclear. The growth and development of maize seedlings and immature embryos have an important impact on subsequent production. ... more

H.S. Nie; S.P. Li; X.H. Shan; Y. Wu; S.Z. Su; H.K. Liu; J.Y. Han; Y.P. Yuan
05/13/2016
Genetic diversity; Heterosis; Pre-breeding; Solanum lycopersicum

Heterosis is a highly relevant phenomenon in plant breeding. This condition is usually established in hybrids derived from crosses of highly divergent parents. The success of a breeder in obtaining heterosis is directly related to the correct identification of genetically contrasting parents. Currently, the diallel cross is the most commonly used methodology to detect contrasting parents ... more

A.S.T. Figueiredo; J.T.V. Resende; M.V. Faria; P.R. Da-Silva; B.S. Fagundes; R.G.F. Morales; A.S.T. Figueiredo; J.T.V. Resende; M.V. Faria; P.R. Da-Silva; B.S. Fagundes; R.G.F. Morales
12/28/2021
DNA movement; Graft; Heterosis; Hybrid Vigor; Polyploidy; Tallus

Periclinal chimera are made constituted of two genotypes growing side by side. One of these genotypes makes up the epidermis, the second forms the internal tissues. As a nonconventional method to improve cassava, it brought its productivity to an extraordinary level that has never been reported before. In previous experiments the chimera were synthesized by hormone ... more

N.M.A. Nassar; P.M. Gakpetor
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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
11/30/2015
interspecific hybrid; Modified location model; Multivariate analysis; Plant breeding

The Ward-MLM procedure was used to evaluate genetic variation in four backcross progenies and in their parents, hybrid F1 HD13 and donor parent Passiflora sublanceolata. Sixteen quantitative descriptors and five qualitative characteristics of relevance to ornamental flower production were assessed. Using the pseudo-F and pseudo-T² criteria, we identified four groups among these plants ... more

C.A.F. Melo; M.M. Souza; A.G.R. Sousa; A.P. Viana; E.A. Santos
10/19/2015
Abiotic stress; Drought tolerance; Plant breeding; Sorghum bicolor

Sorghum grain yield can be significantly affected by climatic changes, especially drought and high temperature. The purpose of this study was to evaluate hybrids of grain sorghum grown under normal irrigation conditions or water stress in order to select those likely to be more tolerant of drought. Forty-nine hybrids were grown in a randomized block design experiment, with three ... more

C.B. Menezes; D.C. Saldanha; C.V. Santos; L.C. Andrade; M.P.Mingote Júlio; A.F. Portugal; F.D. Tardin
03/31/2016
Correlations between traits; Genetic divergence; Multivariate analysis; Plant breeding

The aim of this study was to use multivariate methods and Pearson and partial correlations to disregard phenotypic characteristics that contribute little to differentiation between Brachiaria ruziziensis genotypes. Eighty-one genotypes of B. ruziziensis were assessed in completely randomized blocks with three replications. Ten phenotypic characteristics were assessed: ... more

B.A. Rezende; C.B. Ribeiro; D.H.L. Teixeira; F.M.A. Gonçalves; S. Sobrinho; B.A. Rezende; C.B. Ribeiro; D.H.L. Teixeira; F.M.A. Gonçalves; S. Sobrinho; B.A. Rezende; C.B. Ribeiro; D.H.L. Teixeira; F.M.A. Gonçalves; S. Sobrinho
04/07/2016
Allelochemical; Plant breeding; Resistance to pests; Solanum lycopersicum; Solanum pennellii

The wild tomato, Solanum pennellii, is an important source of resistance genes against tomato pests. This resistance is due to the presence of acyl sugars (AS), which are allelochemicals that have negative effects on arthropod pests. There are no commercially available tomato cultivars that exhibit significant levels of resistance to arthropod pests. Therefore, this study ... more

D.M. Dias; J.T.V. Resende; J.C. Marodin; R. Matos; I.F. Lustosa; N.C.V. Resende; D.M. Dias; J.T.V. Resende; J.C. Marodin; R. Matos; I.F. Lustosa; N.C.V. Resende; D.M. Dias; J.T.V. Resende; J.C. Marodin; R. Matos; I.F. Lustosa; N.C.V. Resende

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