Susceptibility of some mango cultivars to infection with floral malformation disease and its control in Egypt

Abstract: Abstract:
Two field trials with 25 years old mango trees, cvs. Taimour, Mabrouka, Zebda , Alphonso, Piri, Ewase, Fagri-Klan, Sedeek, Mesk, Kobania, Dabsha, Langara, Hindi, Julic and Keitt were conducted during 2003 and 2004 at Fayoum governorate, Egypt. to determine the relative susceptibility of these cultivars to Infection with floral malformation disease . The obtained results showed that the mean incidence of malformed panicles was the least for cvs. Langara, Hindi, Julic and Keitt. While moderate malformation was recorded for cvs. Fagri-Klan, Sedeek, Mesk, Kobania and Dabsha. Meanwhile, the highest susceptible cvs. were Taimour, Mabrouka, Alphonso, , Piri and Ewase. Concerning the effect of NAA at 200 ppm, IBA at 500 ppm, GA3 at 50 ppm, and Cuprous Oxide (Cu2O) at 0.4%. on the incidence of floral malformation disease and yield of Taimour mango trees, the results showed that the incidence of floral malformation disease was sharply reduced in the next flowering season by using any of the used treatments, compared with the untreated trees, Also, the produced fruit yield from treated trees was significantly higher during the first and the second seasons in
comparison with that of the untreated trees. NAA gave the best results followed by IBA, GA3 and Cuprous oxide, respectively.

Key words: Mango malformation .Cultivars reaction , NAA, IBA, GA3, Cuprous
Publication year 2006
Pages 194–199
Organization Name
serial title Proceedigs of the 12th Congress of the Mediterranean Phytopathological Union,11-15 June(2006) Rhodes Island, Hellas
Author(s) from ARC
Agris Categories Plant diseases
Publication Type Conference/Workshop