Authors: L.P. de Carvalho, F.J.C. Farias, J.I.S. Rodrigues, N.D. Suassuna and P.E. Teodoro
Studying genetic diversity among a group of genotypes is important in genetic breeding because identifying hybrid combinations of greater heterotic effect also increases the chance of obtaining plants with favorable allele combinations in an intra-population selection program. The objective of this study was to compare differe.. Read More»
Authors: J.B. Traldi D.R. Blanco M.R. Vicari J.F. Martinez R.L. Lui A.V. Barros R.F. Artoni O. Moreira-Filho
We examined chromosomes of three species of the genus Hypostomus, in order to contribute to the understanding of the karyotype evolution of this group. Specimens of H. ancistroides and H. nigromaculatus displayed differences in karyotype formulas, distribution and location of heterochromatin and nucleolus organizer regions when compared to other populations .. Read More»
Authors: L.C. Rocha, G.A. Silva, F.O. Bustamante, R.A.D. Silveira,A. Mittlemann and V.H. Techio
Analyses carried out with fluorescence in situ hybridization (FISH) in C-metaphases of the Lolium-Festuca complex have shown the occurrence of spontaneous fragile sites (FSs) in 45S rDNA regions. FSs are expressed as gaps but they do not result in breaks or chromosomal fragments in these species. These gaps have high DNA conde.. Read More»
Authors: M.E. Yokota1, P.S. Frison1, R.C. Marcante1, L.F. Jorge1, J.S. Valle1, D.C. Dragunski2, N.B. Colauto1 and G.A. Linde10
Translocation of minerals from substrate to mushrooms can change the medicinal characteristics, commercial value, and biological efficiency of mushroom. In the present study, we demonstrated that addition of iron to the substrate reduces the yield of Pleurotus ostreatus mushroom. The biological efficiency of the mushroom varied from 36.53% on the unsupple.. Read More»
Authors: M.O. Mauro, J.R. Pesarini, M.A. Marin-Morales, M.T.F.D. Monreal, A.C.D. Monreal, M.S. Mantovani and R.J. Oliveira
This study evaluated the mutagenicity and antimutagenicity of inulin in a chromosomal aberration assay in cultures of the meristematic cells of Allium cepa. The treatments evaluated were as follows: negative control - seed germination in distilled water; positive control - aqueous solution of methyl methanesulfonate (.. Read More»
Authors: J.X. Huang, R.L. Qi, X.L. Chen, X.Y. You, X.Q. Liu, F.Y. Yang and Z.H. Liu
A total of 160 Rongchang pigs (26.76 ± 1.78 kg) were randomly assigned to 5 dietary treatment groups until their body weight (BW) reached 90 kg. The diets were supplemented with 0, 0.5, 1.0, 1.5, and 2.0% conjugated linoleic acid (CLA). Our results showed that the 1.0 to 2.0% CLA-fed pigs had less back fat deposition wh.. Read More»
Authors: J.P. Zhou, X.P. Zhu, W. Zhang, F. Qin, S.W. Zhang and Z.H. Jia
The most important traits of Chinese Liaoning cashmere goat fiber are fiber diameter, weight, and length. We looked for polymorphisms and their possible association with cashmere fiber traits in the 5' upstream region (5' UTR) of the prolactin receptor gene (PRLR), which encodes an anterior pituitary peptide hormone involved i.. Read More»
Authors: M.Y. Shao, X.D. Wang, M. Ni, N. Bibi, S.N. Yuan, W. Malik, H.P. Zhang, Y.X. Liu and S.J. Hua
Ligon lintless mutant (li1li1) with super-short fibers (5-8 mm in length) and its wild type (Li1Li1) with normal fibers (30 mm in length) were used to study the function of xyloglucan endotransglycosylase/hydrolase (XTH) genes during fiber elongation in cotton. Wild-type cotton attained the fiber elongation stage earlier (5 da.. Read More»
Authors: J.T. Shu, W.J. Xu, M. Zhang, W.T. Song, Y.J. Shan, C. Song, W.Q. Zhu, X.Y. Zhang and H.F. Li
The peroxisome proliferators-activated receptor-γ coactivator-1α (PGC-1α) is a candidate gene for meat quality traits because of its prominent role in muscle fiber type switching and determination. We investigated the effects of the PGC-1α gene on chicken skeletal muscle fiber type switching and on othe.. Read More»
Authors: J.T. Shu, W.J. Xu, M. Zhang, W.T. Song, Y.J. Shan, C. Song, W.Q. Zhu, X.Y. Zhang and H.F. Li
The peroxisome proliferators-activated receptor-γ coactivator-1α (PGC-1α) is a candidate gene for meat quality traits because of its prominent role in muscle fiber type switching and determination. We investigated the effects of the PGC-1α gene on chicken skeletal muscle fiber type switching and on othe.. Read More»