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dc.contributor.authorAgong', Stephen G.
dc.contributor.authorSchittenhelm, Siegfried
dc.contributor.authorFriedt, Wolfgang
dc.date.accessioned2018-07-12T09:26:33Z
dc.date.available2018-07-12T09:26:33Z
dc.date.issued1997
dc.identifier.citationVolume 95, Issue 1, pp 57–66en_US
dc.identifier.urihttps://link.springer.com/article/10.1023/A:1002933325347
dc.identifier.urihttp://ir.jooust.ac.ke:8080/xmlui/handle/123456789/1367
dc.description.abstractTomato is an important vegetable crop in Kenya and the development of salt tolerant cultivars would enhance its productivity in the vast marginal areas of the country. This study was aimed at determining the magnitude of genotypic variability for salt tolerance in the Kenyan tomato germplasm. Pot experiments with 22 landraces and 9 market cultivars were laid out as a two and four replicate split-plot design in glasshouse in Experiments 1 and 2, respectively. Salt treatments in Experiment 1 were 0 and 5 g NaCl kg-1 resulting into 0.5 and 9.1 dS m-1 of the soil saturation extracts, respectively. In Experiment 2 the treatments were 0, 4, and 8 g NaCl kg-1soil corresponding to 0.5, 7.4, and 14.2 dS m-1, respectively. Data were recorded on agronomic and biochemical parameters. The germplasm showed large variation for salt tolerance. Fruit and seed production at soil salinity of 14.2 dS m-1 demonstrated that these tomatoes are fairly tolerant of NaCl. Osmotic adjustment was achieved by higher fruit electrical conductivity, brix and total titratable acidity. Low and high contents of K+, Ca2+ and Mg2+ within tomato tissues and soil, respectively, under salt treatment, confirmed competition and antagonism involving Na+ and these cations. Low Na+ and Cl- contents in the fruit at 7.4 dS m-1 revealed their exclusion and ensured production of physiologically normal seeds and nutritionally healthy fruits. Two landraces ‘Chwerotonglo’ and ‘Nyanyandogo’ were identified as salt tolerant. Comparatively, the market cultivars showed superior fruit yields despite their susceptibility to salinity. Accordingly, tolerance of landraces in combination with superior yields of the market cultivars is suitable for tomato improvement for salt toleranen_US
dc.language.isoenen_US
dc.publisherInternational Journal of Plant Breedingen_US
dc.subjectLycopersicon esculentumen_US
dc.subjecttomato landracesen_US
dc.subjectsalt stress toleranceen_US
dc.subjectosmotic adjustmenten_US
dc.subjectadaptationen_US
dc.subjectbreeding potentialen_US
dc.titleAssessment of tolerance to salt stress in Kenyan tomato germplasmen_US
dc.typeArticleen_US


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