Mohamed,, K., Hafez, O. (2004). EFFECT OF FOLIAR SPRAYING OF SOME YEAST MUTANTS ON VALENCIA ORANGE TREES (CItrus sinensis). Journal of Plant Production, 29(4), 1995-2011. doi: 10.21608/jpp.2004.238609
Karima A.H. Mohamed,; Omaima M. Hafez. "EFFECT OF FOLIAR SPRAYING OF SOME YEAST MUTANTS ON VALENCIA ORANGE TREES (CItrus sinensis)". Journal of Plant Production, 29, 4, 2004, 1995-2011. doi: 10.21608/jpp.2004.238609
Mohamed,, K., Hafez, O. (2004). 'EFFECT OF FOLIAR SPRAYING OF SOME YEAST MUTANTS ON VALENCIA ORANGE TREES (CItrus sinensis)', Journal of Plant Production, 29(4), pp. 1995-2011. doi: 10.21608/jpp.2004.238609
Mohamed,, K., Hafez, O. EFFECT OF FOLIAR SPRAYING OF SOME YEAST MUTANTS ON VALENCIA ORANGE TREES (CItrus sinensis). Journal of Plant Production, 2004; 29(4): 1995-2011. doi: 10.21608/jpp.2004.238609
EFFECT OF FOLIAR SPRAYING OF SOME YEAST MUTANTS ON VALENCIA ORANGE TREES (CItrus sinensis)
2Pomology Research Department, National Research Centre, Dol<ki, Giza, Egypt.
Abstract
Saccharomyces cetsvisiee mutants selectee after EMS treatments WAre evaluated for their efficiency In improving growth, nutritional status of Irees, praoarvest frull drop percentage, yield and quality 01 Valencia orange fruits. Mutants were selected according to their proline accumulation 3nd osrnotorerance in the presence of a solution of high osmolarity (1 M NaCI). Two mutants, which were more osmotoleranl and had approximately 10 tlrnas more proline than the original strain, wet« selected for foliar spraying of vatencia orange trees al 0 concentration of I ml (4 X 10' cells)/L. The experimental trtals were conducted three Umes during 2001/2002 and 200212003 in a private farm In ouwesoa. EI·Menofey8 Govemorate, Egypt Results showed a remarkable Improvemenl In leal area, leaves minerat content, preharvest fruit drop percentage and yield. Physical and chemical propl:)rti~s of Iruits were also enhanced in both harvest dales, Quality 01 (lull espectauv vita min C and amino acid contents were also Increased, II could be recommended for foliar spraying by yeast mutants especially for exporting vstencra orange fruits.
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