IN VITRO CULTURE OF EAR SHOOTS OF ZEA MAYS AND THE EFFECT OF KINETIN ON SEX EXPRESSION

摘要: Immature ear primordia of maize when cultured on a defined liquid medium grew and differentiated in response to two variables: 1) size initial explants 2) concentration kinetin the medium. Overall growth primordia, less than 15 mm at explanting, reached an optimum fresh weight length was 10-6M. Ears 10 mm, presence kinetin, produced many male spikelets with well-developed stamens both upper lower flowers. greater only female flowers regardless concentration. Different proportions bisexual were depending upon inflorescences kinetin.