01361naa a2200157 a 450000100080000000500110000800800410001910000210006024500590008126000090014052009440014965000120109365300310110570000210113677300460115716325931993-05-18       1991    bl uuuu     u00u1 u    #d1 aDAVEMPORT, T. L.  aEndogenous ethylene ivolved in mango floral induction?  c1991  aEthylene production by entire, conainerised plants, and by resting or growing apical buds, leaves and stems of fild-grwn trees was measured prior to and during inflorescence development,  during floral promotive (December) and during non-promotive (June) conditions in "Tommy Atkins' Mango. In all cases, ethylene production did not exceed basal production levels. During a 98-hour time course, leaves treated with ethephon (2-chloroethyl  phosphonic acid; 125, 500 or 2000 ppm) significantly increased ethylene production while those sprayed with potassium nitrate (KNO3; 2% or 8%) or water did not. Both products have been ineffective in stimulating mango flowering during the floral promotive and non-promotive periods under South Florida conditions. The consistentlack of correlation between ethylene production and flowering suggests that floral inductin of mango may not be mediated by increased ethylene synthesis in leaves or buds.  aFlorida  areguladores de crescimento1 aNUNEZ-ELISEA, R.  tActa Horticulturaegn.291, p. 85-94, 1991