Water Response of Upland Rice Varieties Adopted in Sub-Saharan Africa: A Water Application Experiment

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dc.contributor.authorMatsumoto, Shunsuke
dc.contributor.authorTsuboi, Tatsushi
dc.contributor.authorAsea, Godfrey
dc.contributor.authorMaruyama, Atsushi
dc.contributor.authorKikuchi, Masao
dc.contributor.authorTakagaki, Michiko
dc.date.accessioned2021-12-13T12:22:48Z
dc.date.available2021-12-13T12:22:48Z
dc.date.issued2014
dc.description.abstractWhether a rice Green Revolution in sub-Saharan Africa becomes a reality critically hinges on how far productive upland rice cultivation diffuses in the region. In order to quantify the drought tolerance, the rate of water response and the contribution of yield components to changes in yield due to water availability of upland rice varieties used in sub-Saharan Africa, we conducted water application experiments in Namulonge, Uganda, using NERICA 4, NERICA 10, NARIC 2 and Yumenohatamochi, with five different levels of water application. We found that the NERICA varieties were most drought tolerant, followed by NARIC 2. Yumenohatamochi did not withstand the lowest amount of water application of 378 mm. The results suggested that the minimum water requirement was around 311-400 mm per season for the three varieties used widely in East Africa, and around 420-600 mm for Yumenohatamochi, an upland variety in Japan famous in its drought tolerance. It was estimated that an additional water application of 1 mm increased rice yield by 11-12 kg /ha for the upland varieties tested. The high water response of upland rice was brought about by high water response of four yield components, among which the rate of grain filling contributed most to the increase in yield, followed by number of panicles/m2, number of grains per panicle and 1000 - grain weight, in the order of the degree of contribution, for all the varieties tested.en_US
dc.identifier.citationMatsumoto S, Tsuboi T, Asea G, Maruyama A, Kikuchi M, et al. (2014) Water Response of Upland Rice Varieties Adopted in Sub-Saharan Africa: A Water Application Experiment. J Rice Res 2: 121. doi: 10.4172/jrr.1000121en_US
dc.identifier.other10.4172/jrr.1000121
dc.identifier.urihttps://nru.uncst.go.ug/xmlui/handle/123456789/427
dc.language.isoenen_US
dc.publisherJ Rice Resen_US
dc.subjectDrought toleranceen_US
dc.subjectNERICAen_US
dc.subjectMinimum water requirementen_US
dc.subjectUgandaen_US
dc.subjectYield componenten_US
dc.titleWater Response of Upland Rice Varieties Adopted in Sub-Saharan Africa: A Water Application Experimenten_US
dc.typeArticleen_US
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