Browsing by Author "Nduwarugira, Eric"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Genotype x environment interaction effect on common bean (phaseolns vulgaris l.) performance and yield stability in Burundi
    (Sokoine University of Agriculture, 2014) Nduwarugira, Eric
    Most of the common bean (Phaseolus vulgaris L.) grown in Burundi are selected with little reference to stability of seed yield performance, resulting to low yields. Seven biofort genotypes were tested across three locations (Gisozi, Murongwe and Moso) during two cropping seasons (2013A and 2013B) using a split plot design replicated three times for each location and in split split plot design in combined locations. WindoStat Version 8.5 computer software was used to analyse the collected data. The G x Li interaction was observed and environmental factors significantly affected the performance of the present bean genotypes. Based on good performance, each site presented genotypes which were comparable to the high yielding check variety (GLP2). However, since the check was the latest to mature, the genotypes which performed almost the same to the check variety across seasons (KAB06F2-8-24, KAB06F2-8-78, KAB06F2-8-53 and KAB06F2-8-13) are recommended for confirmation on farmer conditions due to their early maturity trait. Furthermore, these genotypes showed resistance to intermediate reaction to diseases and should possibly be used in bean breeding programs as source of genes for tolerance. The plant population 20cm x 40cm was the best plant density to be recommended for bush bean. In both cropping seasons high heritability was observed for Plant Height (63 and 70%) and Days to Physiological Maturity (66 and 75%). Results revealed the complete absence of genotypes that could be considered to be widely adapted and stable on seed yield. However, genotypes KAB06F2-8-24 and KAB06F2-8-78 were adapted to low yielding environments whereas KAB06F2-8-53 and KAB06F2-8-13 were found suitable in favorable conditions. On the basis of this study, future studies should focus on more seasons and locations in different agro-ecological zones in order to support results obtained in this study.