Effect of low temperature stress on field performance of highland sorghum (Sorghum bicolor (L.) Moench) at flowering stages

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dc.contributor.authorRutayisire, Amandin
dc.contributor.authorMukayiranga, Alice
dc.contributor.authorHabineza, Jean Claude
dc.contributor.authorAvosa, Millicent
dc.contributor.authorEdema, Richard
dc.contributor.authorLubadde, Geofrey
dc.date.accessioned2022-05-26T16:20:50Z
dc.date.available2022-05-26T16:20:50Z
dc.date.issued2020
dc.description.abstractSorghum is a C4 grass native in the semi-arid environments of the African sub-Saharan and consequently chilling stress can affect the performance of the crop, especially at the reproductive stages. Moreover, a significant delay of flowering and maturity was observed when sorghum grows under low temperatures regions, and consequently farmers in highland areas of Uganda face yield penalties. Forty genotypes were evaluated in 2017B and 2018A seasons under non-stress (Kabanyolo) and cold stress (Kachwekano and Zombo) field conditions. Data were recorded on: Days to 50% flowering, days to physiological maturity, culm height, panicle length, panicle weight, kernel weight per panicle, and thousand grain weight. Mean comparison of most agronomic traits recorded indicated high significant differences for season-by-genotype, location-by-genotypes, and the three-way interaction (GxLxS). This indicates that cold stress significantly affects yield components. Significant positive correlation was obtained between days to 50% flowering, days to maturity, and culm height, which suggested that simultaneous improvement of these traits is possible. Some genotypes (IESV 91003LT, IESV 91105LT and IS 29376) were best ranked in normal environment but poorly performed in cold environments, which indicates lack of adaptation in highland. BM6, Cytanobe, IESV 91018, IESV 91609, IS 25563 showed generally good performance and stability in all locations. Therefore, these genotypes can be used as parental lines for further breeding process.en_US
dc.identifier.citationRutayisire, A., Mukayiranga, A., Habineza, J. C., Avosa, M., Edema, R., & Lubadde, G. (2020). Effect of low temperature stress on field performance of highland sorghum (Sorghum bicolor (L.) Moench) at flowering stages. Journal of Plant Breeding and Crop Science, 12(1), 25-33. DOI: 10.5897/JPBCS2019.0844en_US
dc.identifier.other10.5897/JPBCS2019.0844
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/3500
dc.language.isoenen_US
dc.publisherJournal of Plant Breeding and Crop Scienceen_US
dc.subjectSorghumen_US
dc.subjectCold stressen_US
dc.subjectFloweringen_US
dc.subjectMaturityen_US
dc.subjectYield componenten_US
dc.titleEffect of low temperature stress on field performance of highland sorghum (Sorghum bicolor (L.) Moench) at flowering stagesen_US
dc.typeArticleen_US
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