March 2015

Crossability and germinability potentials of some cassava (Manihot esculenta Crantz) progenitors for selection

Controlled crosses and selection of promising cassava genotypes were carried out at Cassava Breeding Programme of National Root Crops Research Institute (NRCRI), Umudike, Nigeria, in 2010. A 3 x 3 North Carolina mating design was used to generate nine F1 population. Out of 7,044 seeds expected from all the pollinated flowers, only 1,102 seeds (15.6%) were harvested. Majority of the pollinated flowers did not develop...

Author(s): Njoku, Damian Ndubuisi, Ikeogu, Ugochukwu Nathaniel, Ewa, Favour and Egesi, Chiedozie

March 2015

Stability of resistance to cassava brown streak disease in major agro-ecologies of Uganda

Cassava brown streak disease (CBSD) is the most devastating disease of cassava in southern,   eastern and cntral Africa, and can cause up to 100% yield loss. Limited progress has been made in breeding for host plant resistance due to limited knowledge on the resistance variability to the disease. Reaction of promising cassava genotypes to CBSD in multi-environments are also unknown. Therefore, this study...

Author(s): Anthony Pariyo, Yona Baguma, Titus Alicai, Robert Kawuki, Edward Kanju, Anton Bua, Christopher A. Omongo, Paul Gibson, David S. Osiru, Dennis Mpairwe and Phinehas Tukamuhabwa

March 2015

Genotype by environment interaction of some faba bean genotypes under diverse broomrape environments of Tigray, Ethiopia

Advanced breeding lines with acceptable resistance and tolerance levels to broomrape is an important way of decreasing yield loss. The objective of this research was to assess the yield stability of faba bean genotypes under diverse broomrape (Orobanche crenata) prone production environments. Six faba bean genotypes were tested across six environments. The AMMI analysis showed significant (P<0.01) genotype,...

Author(s): Teklay Abebe, Yemane Nega, Muez Mehari, Adhiena Mesele, Assefa Workineh and Hadas Beyene