Effect of indole-3-acetic acid on vegetative propagation by cutting cuatomate (Solanum glaucescens Zucc.)

Objective: To evaluate the effect of indole-3-acetic acid and type of rods in the vegetative propagation by cutting of the cuatomate and to describe the phenological stages, to increase production. Design/Methodology/Approach: A completely randomized design was used by means of a 22 factorial arrangement to estimate the effect of two concentrations of indole-3-acetic acid (1000 and 10000 ppm) and type of rods (secondary and tertiary) on the number of leaves and sprout of the plant. For propagation, 30 cm rods from secondary and tertiary branches of the cuatomate were used; with cuts at the ends, transversal and diagonal; parts that generate to the dossal and root, respectively. The data were analyzed by analysis of variance with the general linear models procedure. Results: Highly significant differences (p ? 0.01) were observed between the variables under study. Higher number of leaves and sprout (16.700 and 20.000, respectively) were observed in tertiary rods when inoculated with 1000 ppm of IAA. In the evaluation of the phenological stages, the first bud appeared at 30 days, the first leaf and flowers at 40 and 180 days after inoculation, respectively. Limitations on study/implications: In the transversal section, commercial candelilla wax was applied to prevent possible attacks by pathogens and it was ensured that the rods are completely covered with indole-3-acetic acid. Findings/conclusions: The use of indole-3-acetic acid in the vegetative propagation of the cuatomate would be an alternative to increase its production; promoting a sustainable activity for the Mixtec region of Puebla.Objective: To evaluate the effect of indole-3-acetic acid and budwood type in the vegetative propagation by cutting cuatomate (Solanum glaucescens Zucc.) and to describe the phenological stages, in order to increase production. Design/Methodology/Approach: A completely randomized design with a 22 factorial design was used to estimate the effect of two concentrations of indole-3-acetic acid (1000 and 10000 ppm) and budwood type (secondary and tertiary) on the number of leaves and sprouts of the plant. With regard to propagation, 30-cm budwoods from secondary and tertiary branches of cuatomate were used; transversal and diagonal cuts were made at the ends of the branches that generate the canopy and the root, respectively. Data was subject to an analysis of variance, using the general linear model procedure. Results: Highly significant differences (p ≤ 0.01) were observed between the variables under study. Higher number of leaves and sprouts (16.700 and 20.000, respectively) were observed in tertiary budwoods inoculated with 1000 ppm of IAA. In the evaluation of the phenological stages, the first bud appeared at 30 days, while the first leaf and flowers appeared 40 and 180 days after inoculation, respectively. Study limitations/implications: Commercial candelilla wax was applied in the transversal cut to prevent attacks by pathogens and every single budwood was completely covered with indole-3-acetic acid. Findings/conclusions: The use of indole-3-acetic acid in the vegetative propagation of cuatomate would be an alternative to increase its production; promoting a sustainable activity in the Mixtec region of Puebla

Caracterización de las variantes del gen de k-caseína en razas de ganado bovino

Tesis. (Maestro en Ciencias en Biotecnología Genómica). Instituto Politécnico Nacional, Centro de Biotecnología Genómica. 2010. 1 archivo PDF, (xvii; 74 páginas), tesis.ipn.m

Milk composition and its relationship with weaning weight in Charolais catte

To determine the effects of a number of non-genetic factors on milk components and estimate their indirect relationships with weaning weight (WW205), the percentages of protein, fat, lactose and solids non-fat in Charolais cows from Mexico were estimated. Lactation period (LP) and calving season (CS) had significant effects on protein and fat, whereas lactose and solids non-fat were only affected by the LP. Sire line and age of the dam had significant effects on calf birth weight, while CS affected WW205. Residual correlations between milk components and WW205 suggest a low but significant correlation with lactose. These results demonstrate the importance of several non-genetic factors on the composition of milk from Charolais cows managed under extensive cow-calf production systems and the indirect relationships between these factors and the weaning weight of a calf