October 2013

Yield stability in common bean genotypes (Phaseolus vulgaris L.) in the Sudan

Common bean is an important food legume crop in Sudan. Drought and heat stress are considered the main factors responsible for low productivity. Nine common bean genotypes were evaluated for yield stability under different sowing dates and watering regimes in three field experiments conducted in the River Nile State-Sudan during 2003 to 2006. 10 test- environments were thus achieved, representing the combined effect of...

Author(s): Gamal E. Khalifa, Ali E. Eljack, Maarouf I. Mohammed, Osman M. Elamin and Elsadig S. Mohamed

October 2013

Segregation analysis of cry7Aa1 gene in F1 progenies of transgenic and non-transgenic sweetpotato crosses

Sweetpotato weevils are the most devastating pests of sweetpotato causing yield losses ranging from 60 to 100%. Their cryptic nature, where the larvae is found within plant tissues render them difficult to manage especially using chemicals control. Development of weevil resistant sweetpotato was conducted by crossing a transgenic event CIP410008.7 as a female parent with three Ugandan cultivars as male parents. Crossing...

Author(s): Rukarwa R. J., Mukasa S. B., Sefasi A., Ssemakula G., Mwanga R. O. M. and Ghislain M.