November 2016

Radio-sensitivity of cowpea to ultra-violet radiation by pollen treatment

The technique of pollen irradiation for mutation induction technique has been successfully demonstrated in many crop species. Therefore, the mutagenic effects of UV irradiated pollen on cowpea accessions were investigated. Pollen grains of eight cowpea accessions were irradiated with 30,000µWs/cm2 UV for 60, 120, 180, 240, 300 and 360 minutes. Emasculated flowers of each accession were self-pollinated with...

Author(s): Festus Olakunle Olasupo, Christopher Olumuyiwa Ilori and Anna Abimbola Muyiwa

November 2016

Analysis of genotype x environment interaction and seed yield stability of sesame in Northern Ethiopia

The experiment was conducted in Northern Ethiopia from 2011-2013  under rain fed conditions in a total of seven environments vis. E1, E2, E3, E4, E5, E6 and E7. The objective of the study was to evaluate the adaptability and stability of sesame genotypes across environments. 13 sesame genotypes were evaluated and the experiment was laid out in a Randomized Complete Block Design with three replications. The average...

Author(s): Fiseha Baraki, Yemane Tsehaye and Fetien Abay

November 2016

Combining ability and gene action in sesame (Sesamum indicum L) elite genotypes by diallel mating design

An 8 x 8 diallel cross mating design with the parents and F1s was used to estimate gene action and combining ability for yield and yield characters in sesame (Sesamum indicum L.). The experiment was conducted at the National Semi-Arid Resources Research Institute (NaSARRI), Serere, Uganda during the second season of 2013. The traits involved: days to 50% flowering, days to maturity, height to first branch, height to...

Author(s): Walter Okello Anyanga, Patrick Rubaihayo, Paul Gibson and Patrick Okori

November 2016

A method of estimating broad-sense heritability for quantitative traits in the type 2 modified augmented design

Heritability is a basic genetic parameter for quantitative traits that may determine their selection generation and intensity as well as predict their selection response and efficiency in plant breeding. Estimation of heritability varies based on experimental design. The type 2 modified augmented design (MAD2) as an unbalanced experimental design, has been proposed for evaluating numerous unreplicated test genotypes...

Author(s): Frank M. You, Gaofeng Jia, Sylvie Cloutier, Helen M. Booker, Scott D. Duguid and Khalid Y. Rashid