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ŠUMARSKI LIST 5-6/2013 str. 35     <-- 35 -->        PDF

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Sažetak
Mediteranski bazen jedan je od glavnih središta biljne raznolikosti u Sjevernoj hemisferi. Istočni Mediteran također je područje iznimne genetske raznolikosti četinjača. Istra­živanjem su obuhvaćene klonske sjemenske plantaže Turske s ciljem utvrđivanja efektivnog broja klonova. Srednji broj klonova (N) procijenjen je na 33,12. Srednji efektivni broj klonova (Nc) iznosi 27,59, a srednji relativni efektivni broj klonova (Nr = Nc / N) je 0,827. Procijenjeni proporcionalni genetski diverzitet iznosio je 0,973, s rasponom od 0,922 – 0,983. Stoga je potrebno voditi računa da se koristi gotovo podjednaki broj rameta tijekom osnivanja i održavanja klonskih sjemenskih plantaža. Prijetnje poput klimatskih promjena, požara, bolesti i kukaca moraju se uzeti u obzir kod osnivanja plantaža. Potrebno je uzorkovati velik broj populacija sa šireg područja, a klonske sjemenske plantaže najbolje je osnivati lokalno uvažavajući ekološka obilježja četinjača. Ovime se također osigurava održivo gospodarenje šumskim genetskim bogatstvom. Kod osnivanja budućih klonskih sjemenskih plantaža nužno je pribaviti podatke o fenotipskoj selekciji kao i rezultate molekularne genetičke analize potencijalnih klonova.
Ključne riječi: klimatske promjene, efektivni broj klonova, genetska raznolikost, varijabilnost rameta, sjemenska plan­taža