
Authors: R.M. Ribeiro, A.T. do Amaral J�ºnior, L.S.A. Gon�§alves, L.S. Candido, T.R.C. Silva and G.F. Pena
As part of the Universidade Estadual do Norte Fluminense recurrent selection program of popcorn, we evaluated full-sib families of the sixth cycle of recurrent selection and estimated genetic progress for grain yield and expansion capacity. We assessed 200 full-sib families for 10 agronomic traits, in a randomized block design.. Read More»
Authors: H. Lin, M.S. Islam and D.W. Ramming
A genome-wide sequence search was conducted to identify simple sequence repeat (SSR) loci in phylloxera, Daktulosphaira vitifoliae, a major grape pest throughout the world. Collectively, 1524 SSR loci containing mono-, di-, tri-, tetra-, penta-, and hexanucleotide motifs were identified. Among them, trinucleotide repeats were .. Read More»
Authors: J.C. Vazquez-Angulo, V. Mendez-Trujillo, D. GonzÃ?¡lez-Mendoza, A. Morales-Trejo, O. Grimaldo-Juarez and L. Cervantes-DÃ?Âaz
Extraction of high-quality genomic DNA for PCR amplification from filamentous fungi is difficult because of the complex cell wall and the high concentrations of polysaccharides and other secondary metabolites that bind to or co-precipitate with nucleic acids. We developed a modified sodium dodecyl sulfate/phenol protocol, with.. Read More»
Authors: M.A. Hameed, R.M. Rana and Z. Ali
Crown rot is one of the main important fungal diseases affecting wheat in many areas of the world, including Australia, USA, and Iran. Until now, there had been no report of this pathogen in Iraq. Plants displaying crown rot symptoms were observed in Shaat Alarab (Basra, Iraq); we investigated the causal agent of the disease. .. Read More»
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: L.G. Androcioli, E.A. Ruas, L.A. Rodrigues, C.F. Ruas , H.E.R. Perilla, P.M. Ruas
Phyla scaberrima (Verbenaceae) is a herbaceous perennial species that is distributed from Mexico (center of origin) to Colombia, growing in forest and swamp edges or grasslands from sea level up to an altitude of 1800 m. The chemical properties and uses in popular medicine have drastically affected the population siz.. Read More»
Authors: N.M.A. Nassar and M. Mendonza
Two cassava escapes where collected from cultivated fields near natural habitat in Bolivia. They are described morphologically and analyzed cytogenetically in this study. It is suggested that they are the product of backcrosses of cassava interspecific hybrids with the cultigen itself, and that selective conditions have develo.. Read More»
Authors: E. Maltas H.C. Vural
We examined genetic relationships between canola (Brassica napus) genotypes cultivated in winter and spring in Turkey. Genomic DNA was isolated from the seeds by two modified CTAB protocols: EZ1 nucleic acid isolation method and a commercial kit (Dneasy Plant Mini Kit, Qiagen). Diversity and genetic relationships in the genotypes were analyzed with RAPD m.. Read More»
Authors: Isolation and characterization of 8 microsatellite loci from Chrysophyllum gonocarpum (Sapotaceae)
Chrysophyllum gonocarpum is a tropical tree species that is very important in the recovery of heterogeneous forests and of degraded areas of permanent preservation. We identified microsatellite loci for C. gonocarpum to assess the genetic variability and the patterns of the population structure of the species. We isolated 8 microsatellite primers by using CT.. Read More»
Authors: C.M. Silva, J.B. Miranda Filho, U.C. Mendes and E.F. Reis
In Brazil, the total production of maize has increased continuously due to the advances in technology but also to the new frontiers for the maize crop, including the expansion of the second crop (safrinha; usually maize after soybean). Therefore, the exploitation of new sources of germplasm seems to be imperative to attend the.. Read More»