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EFFECT OF GAMMA RADIATION ON SECONDARY SOMATIC EMBRYOGENESIS IN NUCELLUS CULTURES OF CITRUS CULTIVARS

NAFEES ALTAF, M. MOHSIN IQBAL, EHSANULLAH KHAN MARWAT AND INKSAR A. BHATTI

Abstract: Secondary somatic embryogenesis from 33 Citrus cultivars was studied with 0, 3, 6, 9 and 12 Kr doses of gamma radiation. Somatic embryogenesis and radiation sensitivity was cultivar dependent. Kinnow, Jaffa, Valencia, Blood red, Feutrell's early and Gada dehi showed good aptitude for embryo development while Chakotra, Tangerin, Eureka lemon, Kharna khatta, Chinese lemon, Gada dehi showed suppression of embryogenesis at 12 Kr radiation dose.

Nuclear Institute for Agriculture and Biology (NIAB) Faisalabad, Pakistan.
Department of Botany, University of Sindh, Jamshoro, Pakistan.