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dc.publisherKassel University Pressger
dc.rightsUrheberrechtlich geschützt
dc.subjectalternate furrow irrigationeng
dc.subjectchlorophyll contenteng
dc.subjectfruit growth rateeng
dc.subjectrelative leaf water contenteng
dc.subjectstomatal conductanceeng
dc.titleAlternate furrow irrigation of four fresh-market tomato cultivars under semi-arid condition of Ethiopia – Part II: Physiological responseeng
dcterms.abstractUnderstanding the variation in physiological response to deficit irrigation together with better knowledge on physiological characteristics of different genotypes that contribute to drought adaptation mechanisms would be helpful in transferring different irrigation technologies to farmers. A field experiment was carried to investigate the physiological response of four tomato cultivars (Fetan, Chali, Cochoro and ARP Tomato d2) to moderate water deficit induced by alternate furrow irrigation (AFI) and deficit irrigation (DI) under semi-arid condition of Ethiopia during 2013 and 2014. The study also aimed at identifying physiological attributes to the fruit yield of tomato under different deficit irrigation techniques. A factorial combination of irrigation treatments and cultivar were arranged in a complete randomized design with three replicates. Results showed that stomatal conductance (g_s) was significantly reduced while photosynthetic performance measured as chlorophyll fluorescence (Fv’/Fm’), relative water content (RWC) and leaf ash content remained unaffected under deficit irrigations. Significant differences among cultivars were found for water use efficiency (WUE), g_s, chlorophyll content (Chl_SPAD), normal difference vegetation index (NDVI), leaf ash content and fruit growth rate. However, cultivar differences in WUE were more accounted for by the regulation of g_s, therefore, g_s could be useful for breeders for screening large numbers of genotypes with higher WUE under deficit irrigation condition. The study result also demonstrated that cultivar with traits that contribute to achieve higher yields under deficit irrigation strategies has the potential to increase WUE.eng
dcterms.accessRightsopen access
dcterms.bibliographicCitationIn: Journal of Agriculture and Rural Development in the Tropics and Subtropics. Kassel : Kassel University Press. - Vol. 117, No. 2 (2016), S. 269-282
dcterms.creatorBogale, Ashinie
dcterms.creatorSpreer, Wolfram
dcterms.creatorGebeyehu, Setegn
dcterms.creatorAguila, Miguel
dcterms.creatorMüller, Joachim
dc.description.everythingGedruckte Ausg. im Verlag Kassel Univ. Press ( erschienen.ger

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