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11/21/2016
Calculating study sample size; Experimental precision; Sampling; Zea mays L.

Tassel traits are important in maize breeding programs aiming to reduce the size and number of branches and maintain satisfactory pollen production in order to increase grain yield. The objectives of this study were to determine the sample size (number of tassels) required to estimate the mean values for tassel traits in maize genotypes and to verify the ... more

C.A. Wartha; C. Filho; A.D. Lúcio; D.N. Follmann; J.A. Kleinpaul; F.M. Simões; C.A. Wartha; C. Filho; A.D. Lúcio; D.N. Follmann; J.A. Kleinpaul; F.M. Simões
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Ligninolytic enzymes; Mycelial growth; Polyphenol oxidase; White-rot fungi

Fungus ability to respond to environmental changes allows their adaptation to a wide variety of conditions such as pH, temperature, light, nutrient availability, chemicals, and competition among species. Temperature and pH can affect fungal growth as well as their metabolism. Knowing these factors on fungus species is relevant for the development of ... more

R.A. Marim; K.V. Avelino; G.A. Linde; N.B. Colauto; J.S. Valle
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
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
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
12/02/2016
DNA, Plant; Edible Grain; Genetic variation; Hordeum; Minerals; Plant breeding; Quantitative trait loci; Selection, Genetic

Mineral elements in barley (Hordeum vulgare) play an important physiological role in global human health. In this study, quantitative trait loci (QTLs) for concentration of nine mineral elements in barley grain and grass powder were detected in a population of 193 recombinant inbred lines of the barley cross Ziguangmangluoerling x Schooner and the parents. We observed large genetic variation ... more

Y.W. Zeng; J. Du; X.M. Yang; X.Y. Pu; L.X. Wang; J.Z. Yang; L.J. Du; T. Yang; S.M. Yang; Z.H. Sun
12/02/2016
cluster analysis; Conservation of Natural Resources; DNA, Plant; Genetic markers; Genetic variation; Genetics, Population; Microsatellite Repeats; Myrtaceae; Phylogeny; Plant breeding

Myrcia lundiana Kiaersk. is a tree of the family Myrtaceae found in tropical and subtropical areas of the southern hemisphere that produces essential oil. The aim of this study was to characterize the genetic diversity of M. lundiana plants from a native population of Parque Nacional de Itabaiana, using inter-simple sequence repeat molecular markers. Thirty-five primers were tested, 20 of ... more

M.F. Alves; D.A.C. Nizio; F.A. Brito; T.S. Sampaio; A.V.C. Silva; M.F. Arrigoni-Blank; S.V.A. Carvalho; A.F. Blank
12/19/2016
China; Chromosomes, Plant; Cotton Fiber; Genotype; Gossypium; Plant breeding; Polymorphism, Genetic; Quantitative trait loci

Upland cotton (Gossypium hirsutum L.) is an important cash crop that provides renewable natural fiber worldwide. Currently limited genetic base leads to a decrease in upland cotton genetic diversity. Multi-parent advance generation inter-cross (MAGIC) populations can be used to evaluate complex agronomic traits in crops. In this study, we developed an upland cotton MAGIC population. A total of ... more

D.G. Li; Z.X. Li; J.S. Hu; Z.X. Lin; X.F. Li

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