Comparative study on some polyembryonic mango rootstocks.
Shaban A. E. A.
Author Affiliation: Department of Pomology, Faculty of Agriculture, Cairo University, Giza, Egypt.
American-Eurasian Journal of Agricultural and Environmental Science 7 : 527-534
Abstract : This experiment was conducted at the nursery and the laboratory of Pomology Department Faculty of Agriculture, Cairo University, Egypt during 2005, 2006, 2007 and 2008 years to study the germination and growth of Zebda, Sukkary, Sabre and 13-1 mango rootstocks under nursery conditions. Also, the four tested rootstocks were studied for their effects on grafting success and takes growth of Ewais, Zebda and Keitt mango cultivars. Results indicated that seeds of Zebda rootstock produced the highest embryos weight. Sabre rootstock produced the highest number of embryos per seed, germination percentage and number of germinated seedlings per seed. Maximum seedling height and root length was observed in Zebda rootstock, the highest leaf area was recorded with Sukkary and the highest number of leaves per seedling was recorded with Sabre rootstock. Meanwhile, the lowest values of vegetative growth parameters were observed with 13-1 rootstock. Leaves of Zebda rootstock contained the highest gibberellins and indoles and the lowest abscisic acid and phenols, the opposite was found with the rootstock 13-1. Scions and Ewais, Zebda and Keitt showed the highest grafting success percentage and takes length when grafted on Zebda rootstock meanwhile the lowest values were recorded with 13-1. According to the performance of these rootstocks under Egyptian nursery conditions Zebda could be considered as a vigorous rootstock, Sukkary and Sabre as a semi dwarfing rootstock and 13-1 as a dwarfing rootstock.