Plum Sectorial Resistance to Plum Pox Virus
Sektorijalna otpornost šljive prema virusu Šarke šljive
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Author
Tosic, Malisa
Keywords
plumPlum Pox Virus
sectorial resistance
šljiva
virus šarke šljive
sektorijalna otpornost
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Plum sectorial resistance to Plum pox virus (PPV) is manifested in the part of a crown of a plum tree which is infected by PPV. There is no presence of PPV or symptoms of desease (sharka) in that part of the crown of a plum tree. This type of resistance was found in three plum cvs. Čačanska Rodna, Stanley and Crvena Ranka. Sectorial resistance was succesfully transmitted and proven by double grafting. Two buds were grafted to the same rootstock of the Myrobalan (Prunus cerasifera Ehrh.). One bud was a carier of the PPV and the other was a carier of the resistance to the PPV. Both of the buds developed healthy shoots. Among the three examened plum cvs. the best results were obtained with cv. Crvena ranka, foolowed by cv. Stanley. The weakest sectorial resistance showed to be in cv. Čačanska rodna. Sektorijalna otpornost šljive prema virusu šarke šljive (VŠŠ) ispoljava se u delu krune stabala šljive obolelih od šarke. U tom delu krune VŠŠ nije prisutan niti se na tom delu biljke ispoljavaju simptomi oboljenja (šarke). Ta otpornost je nađena kod tri genotipa šljive i to kod Čačanske rodne, Stanley-a i Crvene ranke. Sektorijalna otpornost je dokazana i preneta dvojnim kalemljenjem. Na iste podloge od džanarike (Prunus cerasifera Ehrh.) nanošena su po dva pupoljka: jedan od njih je nosio sektorijalnu otpornost a drugi VŠŠ. Oba izrasla lastara su zdrava. Od tri ispitivana genotipa šljive sektorijalna otpornost je najizraženija kod Crvene ranke, sledi sorta Stenley a najslabija sektorijalna otpornost je nađena kod sorte Čačanska rodna.