Paths of influence among components of yield in sorghum (Sorghum bicolor (L) Moench, cv Tegemeo) grown in the semi arid area of Dodoma Region, Tanzania

dc.contributor.authorReuben, S.O.W.
dc.contributor.authorRwehumblza, F.B.R.
dc.contributor.authorMahoo, H.F.
dc.contributor.authorHatibu, N.
dc.contributor.authorMakungu, P.
dc.contributor.authorAshimogo, G.C.
dc.date.accessioned2017-12-08T11:37:29Z
dc.date.available2017-12-08T11:37:29Z
dc.date.issued1998
dc.descriptionTanzania Journal of Agriculture Science 1998, Vol 1(2): pp 99-I08en_US
dc.description.abstractSorghum is a food security crop in tropical marginal areas. Improvement strategies for yield under such conditions are important. Genetic improvement for yield is done thr0ll:gh improvement of its components. Due to yield component compensation, this improvement strategy is made less rewarding. It is therefore important to know compe1J.satory mechanisms existing for better improvement strategies. Studies on the nature of component compensations in sorghum are limited and virtually lacking under Tanzanian conditions. A field experiment was conducted to investigate the nature of interrelationships among components of yield in sorghum at the experimental plots of Hombolo Research Station in the semi-arid zone of Dodoma Region, Tanzania. Six treatment combinations, of rain water harvesting techniques and fertilizer were laid out in a randomized comple,te block design (ReED) with four replications during the growing season of 1996/97. Number of grains was an important component which was significantly correlated (r=O. 982***) with grain yield and had a high positive direct effect (0.979) on yield. Average grain weight was not import~nt in influencing yield of sorghum. Plant biomass had a negative direct effect (-1.2997) on average grain weight but was not important in influencing number of grains. Plant height and percent light intercepted directly influenced number of grains and average grain weight negatively. The negative influence (- 0.8712) of plant height on number of grains was compensated to a low relationship (r= -0.337) mainly by its positive indirect influence (0.3780) through light interception. Improvement strategies should aim at shorter plants with more grains, of lesser canopy development and biomass in these semi arid areas.en_US
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/1848
dc.language.isoenen_US
dc.subjectBiomassen_US
dc.subjectComponent compensationen_US
dc.subjectGrain numberen_US
dc.subjectLight interceptionen_US
dc.subjectPlant heighten_US
dc.subjectSemi ariden_US
dc.titlePaths of influence among components of yield in sorghum (Sorghum bicolor (L) Moench, cv Tegemeo) grown in the semi arid area of Dodoma Region, Tanzaniaen_US
dc.typeArticleen_US

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