Introgression of resistance to pathogens in common bean lines with the aid of molecular markers [Introgressão de resistência a patógenos em linhagens de feijoeiro com auxílio de marcadores moleculares]
Pereira A.C.,Federal University of Vicosa |
Poersch N.L.,Federal University of Vicosa |
Carneiro P.C.S.,Federal University of Vicosa |
Junior T.J.P.,EPAMIG Zona da Mata |
And 2 more authors.
Crop Breeding and Applied Biotechnology | Year: 2013
Aiming to incorporate resistance to the anthracnose and angular leaf spot pathogens in the common bean lines BRSMG Talismã, VC8 and VC9, crosses were made between these lines and the line Rudá-R, donor of the alleles Phg1, Co-4, Co-10, which confer resistance to Pseudocercospora griseola and Colletotrichum lindemuthianum. After the crosses, the backcross populations were obtained, and the RC1F1 plants were inoculated with race 65 of C. lindemuthianum. The resistant plants were genotyped with the markers SCARH13, SCARY20 and SCARF10, linked to the alleles Phg1, Co-4 and Co-10, respectively. Based on the molecular data, 44 plants were selected. The progenies originating from multiplication of these plants were evaluated over three seasons for grain yield, plant architecture and grain aspects. Based on these considerations and molecular data, 13 promising progenies were selected for developing inbreds.
Sediyama M.A.N.,EPAMIG Zona da Mata |
Santos M.R.,EPAMIG SM FERN |
Vidigal S.M.,EPAMIG Zona da Mata |
Santos I.C.,State University of Piaui |
Salgado L.T.,EPAMIG Zona da Mata
Planta Daninha | Year: 2010
Soil covering is an important practice in vegetable production, also helping in weed control. There is almost no research involving alternative weed control in sugar beet and few herbicides are suitable for this crop. This work aimed to evaluate the effect of mulching using coffee husk and sugarcane bagasse, and doses of swine culture waste water sedimentation pond sludge on weed incidence and yield of sugar beet cultivar Early Wonder. The experiment, carried out at the EPAMIG Experimental Farm in Oratórios-MG, was arranged as a split-plot in a randomized block design with four replications. The plots consisted of three types of cover crops: Sugarcane bagasse, coffee husk and no cover, and the split-plots of five doses of sludge from swine wastewater sedimentation pond (0, 10, 20, 40 and 60 t ha -1). At 45 days after seedling transplanting (DAT), the weed population was evaluated and at 70 DAT, harvest was carried out. Coffee husk and sugarcane bagasse were effective in reducing the total fresh weight of weeds, mainly because of the suppressive effect of mulching on dicotyledonous weeds. Nut grass (Cyperus rotundus) dry mass increased with coffee husk, while dry mass of other monocots showed no difference among the three treatments. Increasing doses of sludge caused a linear reduction in the dry mass of monocots, except of nut grass. Coffee husk mulching provided the highest root unit weight and increased commercial root yield, regardless of the sludge doses.
Sediyama M.A.N.,EPAMIG Zona da Mata |
Dos Santos I.C.,EPAMIG Sul de Minas |
De Lima P.C.,EPAMIG Zona da Mata
Revista Ceres | Year: 2014
Vegetables and agrochemical contamination is the most outstanding food topic addressed by scientific journals and popular scientific articles. This increasingly available information has led to an increase in consumers demand for organic products and, consequently, for the development of technologies that make organic production viable to meet this demand and raise the income of producers, mostly family farmers The production of organic vegetables requires technologies that foster ecological processes, promote the increase of organic matter in the soil and energy-saving practices. The objective of this work was to present and discuss some of these technologies and research results, focusing on seedling production, soil fertilization and management, green fertilization, crop rotation, vegetable consortium, weed, pest and disease management. Such practices are approved by organic production norms and follow agroecological principles, contributing to a greater energetic efficiency of the productive systems, which collectively provide the necessary development of a scientifically-based vegetable production sector.