November 2019
Estimates of genetic parameters and genotype by environment interactions for sugar yield and its components in sugarcane genotypes in Western Kenya
This study was conducted to estimate broad sense heritability, genetic advance, GE interactions and correlations among quality traits in sugarcane clones in western Kenya. Thirteen sugarcane promising clones and one check cultivar were evaluated plant and ratoon crops in three locations under rain fed conditions using the randomised complete block design with three replications. Analysis of variance showed...
November 2019
Genetic dissimilarity and growth of coffee in Cerrado
Genetic dissimilarity can be used to identify promising genotypes for cultivation in specific conditions. Thus, the objective of this work is to study the genetic dissimilarity among 35 genotypes of Coffea arabica in the Cerrado, under irrigation, using phenological data and multivariate statistics. Plant height, stem diameter, canopy diameter, number of orthotropic branch nodes, length of orthotropic branch internodes,...
November 2019
Evaluation of coffee berry disease resistance (Colletotrichum kahawae) in F2 populations derived from Arabica coffee varieties Rume Sudan and SL 28
Coffee supports livelihoods of approximately 125 million families worldwide and over 700,000 households in Kenya. The epidemics of Coffee berry disease (CBD), caused by Colletotrichum kahawae, destroy up to 80% of the developing berries on susceptible varieties. The control of the disease using chemicals accounts for 30 to 40% of the production cost and contributes to environment pollution, hence the use of resistant...
November 2019
Heritability studies of drought tolerance in groundnuts using the North Carolina design II fashion and variance component method
Drought is the most important abiotic limitation to groundnut yields across the world, and the Northern Regions of Ghana. The study estimated the heritability and genetic variability of selected parents of groundnut for drought tolerance traits to aid in their effective selection and utilization. The North Carolina II mating design was adopted while the variance component method was used to estimate heritabilities in...
November 2019
Efficacy of insecticides and crop critical stage for the management of chickpea pod borer (Helicoverpa armigera) in Central Zone of Tigray, Ethiopia
Chickpea pod borer (Helicoverpa armigera) is a major insect pest constraining chickpea production in Tigray, northern Ethiopia, as there is no recommended management option in the area. Therefore the present study was conducted to assess the efficacy of insecticides and to determine the critical growth stage of the crop for effective spray at Axum Agricultural Research Center. Results indicated that in laboratory profit...
December 2019
Evaluation of hot pepper (Capsicum annuum L.) varieties for green pod yield and yield components in Western Tigray, Northern Ethiopia
A field experiment was conducted at Humera Agricultural Research Center experimental site for two consecutive years (2011/2012 and 2012/2013 cropping season) under irrigation condition to evaluate performance of hot pepper varieties for green pod yield and yield components in western Tigray, Northern Ethiopia. A total of six hot pepper varieties were used as test genotypes. Least Significant Difference (LSD) and Pearson...
December 2019
Evidences that polyploidization and hybridization affected resveratrol content in Arachis interspecific hybrids
To broaden the genetic base of the allotetraploid peanut (Arachis hypogaea L.), pre-breeding programs have produced interspecific synthetic allotetraploids resulting from the chromosome duplication of hybrids between peanut related diploid species. These allotetraploids were highly cross-fertile with peanut making it possible to access the extensive genetic variability harbored by the wild species. This study aims to...
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