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Zbornik - Društvo genetičara Srbije

Zbornik - Društvo genetičara Srbije

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IV-Usm-22 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 111<br />

Subotica, 30. novembar - 4. decembar 2004.<br />

MORFO-ANATOMSKA SVOJSTVA ÈETINA SPONTANIH MUTANATA<br />

BELOG BORA (Pinus silvestris L.) SA UTIM ÈETINAMA<br />

Dragica Vilotiæ 1 , M. Tošiæ 2 i Gordana Radoševiæ 1<br />

1<br />

Šumarski fakultet, Beograd<br />

2<br />

Dimitrija Tucoviæa 41, Uice<br />

Borovi kod kojih je uta boja uslovljena genetskom konstitucijom, poznati su kao «zlatni<br />

borovi» i odavno su predmet interesovanja, posebno struènjaka za pejzanu arhitekturu.<br />

U radu su prikazani uporedni rezultati morfoloških i anatomskih svojstava dvogodišnjih<br />

èetina tri stabla belog bora sa utim èetinama na Zlatiboru: P.silvestris L. var. zlatibirica<br />

Omanoviæ (1937), P. silvestris L. var. aurea zlatiborensis Tošiæ (1995) i novootkrivenog<br />

stabla sa osobinama himere (Tošiæ M. 2002) koje ima posebne grane sa zelenim, sa<br />

izrazito utim i sa uto-zelenim (panaširanim) èetinama, kada je jedna strana èetine<br />

zelena, a druga uta po celoj svojoj duini. Analizirani su: velièina, brojnost i boja èetina,<br />

kao i: broj slojeva hipodermalnih æelija i broj njihovih grupacija, slojevi sklerenhimskih<br />

æelija u zoni sprovodnih snopiæa i broj smolnih kanala. Èetine prouèavanih mutanata<br />

bitno se razlikuju po svojim morfološkim osobinama i anatomskoj graði, kako od<br />

tipiènog varijeteta belog bora, tako i meðusobno. Prouèavanje spontanih mutanata<br />

šumskog drveæa, kao i ovih «zlatnih borova» zasluuje punu panju, jer su prirodne<br />

retkosti sa specifiènim osobinama, koje ih èine atraktivnim za korišæenje u hortikulturi.<br />

U cilju trajnog oèuvanja i proizvodnje ukrasnih kultivara, njihovi genotipovi su fiksirani<br />

heterovegetativnim razmnoavanjem.<br />

MORPHO-ANATOMIC PROPERTIES OF THE NEEDLES OF SCOTS PINE<br />

(Pinus silvestris L.) SPONTANEOUS MUTANTS WITH YELLOW NEEDLES<br />

The pines in which yellow colour is conditioned by genetic constitution, are known as<br />

«golden pines» and they have been subjects of interest, especially of landscape architects,<br />

for a long time. This paper presents the comparative results of morphological and anatomical<br />

characters of second-year needles of three Scots pines with yellow needles on<br />

Mt. Zlatibor: P. silvestris L. var. zlatibirica Omanoviæ (1937), P. silvestris L. var. aurea<br />

zlatiborensis Tošiæ (1995) and the newly discovered tree with chimera characteristics<br />

(Tošiæ M., 2002), with individual branches with green, with explicitly yellow and with<br />

yellow-green needles, when one side of the needle is green, and the other yellow, along<br />

the whole length. The analysed characters are: needle size, number and colour, number of<br />

layers of hypodermic cells and number of their groups, layers of sclerenchymous cells in<br />

the vascular bundle zone and the number of resin channels. The needles of the study mutants<br />

differ essentially by their morphological characters and anatomic structure, both<br />

from the typical Scots pine variety, and among themselves. The study of spontaneous<br />

mutants of forest trees, and also these «golden pines» deserves full attention, because<br />

they are natural rarities with specific characteristics, which make them attractive for amenity<br />

horticulture. In the aim of permanent conservation and production of ornamental<br />

cultivars, their genotypes have been fixed by heterovegetative reproduction.

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