
Authors: D.V. Ferreira, R.G. Von Pinho, M. Balestre and R.L. Oliveira
We evaluated the efficiency of the best linear unbiased predictor (BLUP) and the influence of the use of similarity in state (SIS) and similarity by descent (SBD) in the prediction of untested maize hybrids. Nine inbred lines of maize were crossed using a randomized complete diallel method. These materials were genotyped with .. Read More»
Authors: H.A. Marquez-Santacruz, R. Hernandez-Leon, M.C. Orozco-Mosqueda, I. Velazquez-Sepulveda and G. Santoyo
Endophytic bacterial diversity was estimated in Mexican husk tomato plant roots by amplified rDNA restriction analysis and sequence homology comparison of the 16S rDNA genes. Sixteen operational taxonomic units from the 16S rDNA root library were identified based on sequence analysis, including the classes Gammaproteobacteria,.. Read More»
Authors: G.C.L. Ricci, M.S. Pagliarini and C.B. Valle
Polyploidy is a prominent and significant force in plant evolution, taking place since ancient times and continuing until today. Recent cytogenetic studies in the genus Brachiaria using germplasm collected from wild African savannas in the 1980s revealed that most species and accessions within species are polyploid. Diploid, t.. Read More»
Authors: D. DeÃ?Â?irmenci KarataÃ?Â?, B. Kunter, G. Coppola and R. Velasco
The effects of induced mutation produced by five different doses of gamma irradiation (20, 25, 30, 40, and 45 Gy) were determined using molecular approaches in Vitis vinifera cultivars, namely Thompson Seedless (Sultani Çekirdeksiz) (progenitor of seedless vinifera variety) and Kalecik KarasÃ?± (one of the best quality.. Read More»
Authors: Y.Q. An, R.M. Lin, F.T. Wang, J. Feng, Y.F. Xu and S.C. Xu
Calreticulin proteins play essential roles in regulating various metabolic processes and in molecular signal transduction in animals and plants. Using homologous PCR, we screened a cDNA library of the wheat resistance gene Yr5 from a near-isogenic line in the susceptible common wheat variety Taichung 29, which was inoculated w.. Read More»
Authors: A.L.S. Azevedo, P.P. Costa, M.A. Machado, C.M.P. de Paula and F.S. Sobrinho
The grasses of the genus Brachiaria account for 80% of the cultivated pastures in Brazil. Despite its importance for livestock production, little information is available for breeding purposes. Embrapa has a population of B. ruziziensis from different regions of Brazil, representing most of existing variability. This populatio.. Read More»
Authors: X.C. Lin, Y.F. Lou, J. Liu, J.S. Peng, G.L. Liao and W. Fang
Crossbreeding is an efficient means to increase production and quality in plants; however, hybridization is seldom reported in bamboo. We crossbred two bamboo species Phyllostachys kwangsiensis (female parent) and Phyllostachys bambusoides (male parent) for the first time, and obtained suspected bamboo hybrids. We identified t.. Read More»
Authors: L.P. Marouelli, P.W. Inglis, M.A. Ferreira and G.S.C. Buso
The family Heliconiaceae contains a single genus, Heliconia, with approximately 180 species of Neotropical origin. This genus was formerly allocated to the family Musaceae, but today forms its own family, in the order Zingiberales. The combination of inverted flowers, a single staminode and drupe fruits is an exclusive charact.. Read More»
Authors: M.M.U. Castanhole, L.L.V. Pereira, H.V. Souza and M.M. Itoyama
Although they are of economic importance, there have been few cytogenetic studies of the Gerridae (Heteroptera) in Brazil. We examined spermatogenesis (meiosis and spermiogenesis) and nucleolar behavior in three species of the family Gerridae. Brachymetra albinerva and Halobatopsis platensis were found to have a chromosome com.. Read More»
Authors: M. Riahi, S. Zarre, A.A. Maassoumi, F. Attar and S. Kazempour Osaloo
Three DNA extraction protocols were compared for their ability to yield DNA from the leaves of herbarium specimens of nine species from nine genera of the Papilionoideae. We tested two protocols that use classic procedures for lysis and purification with cetyl trimethylammonium bromide (CTAB); a third protocol used a Nucleospi.. Read More»