October 2014

Combining ability and heterosis for different agronomic traits in maize (Zea mays L.) under drought stress in the Sudan Savanna of Borno State, Nigeria

Combining ability variances were estimated for grain yield and its related traits in maize (Zea mays L.). Nine maize varieties consisted of five IITA open pollinated varieties (OPVs) and four local varieties were crossed in line x tester mating design. During the 2007 cropping season to determine the general combining ability (GCA), specific combining ability (SCA) effects and heterosis. Parents and hybrids were...

Author(s): D. Aminu, M. A. Dawud and A. Modu

October 2014

Evaluation of bean qualities of indigenous Arabica coffee genotypes across different environments

Evaluation of bean qualities of 30 Arabica coffee genotypes were carried out at four different locations (South-western Ethiopia). The genotypes had high overall yield potential, during a preliminary evaluation carried out at Gera. The differences among genotypes for cherry weight (CW), bean weight, parchment length (PL), bean length (BL), floater beans and outturn percent at each location were highly significant (p...

Author(s): Yonas Belete, Bayetta Belachew and Chemeda Fininsa

October 2014

Crop nutrition studies on grain filling and chalkiness in rice

Rice grain chalkiness can reduce crop quality resulting in lower grades and returns. It is as a consequence of loose starch and protein particles packing during grain filling and maturation, and may due to nutritional, biochemical, physiological and environmental conditions particularly in varieties with high inheritable chalkiness. This study set out to evaluate the response to varying levels of nitrogen and potassium...

Author(s): Puran Bridgemohan and Ronell S. H. Bridgemohan