Zbornik - Društvo genetičara Srbije

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154 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Pos-37 Subotica, 30. novembar - 4. decembar 2004. VARIJABILITET SADNICA Ginkgo biloba L. PROIZVEDENIH IZ SEMENA KINESKE PROVENIJENCIJE U RASADNIKU TAMARIS COMPANY U BANJA LUCI M. Tošiæ 1 i Dragica Vilotiæ 2 1 Dimitrija Tucoviæa 41, Uice 2 Šumarski fakultet u Beogradu Ginkgo biloba, najstarija i najotpornija drvenasta vrsta na planeti, endemit istoènog dela Kine, ali od èoveka unet u mnoge zemlje sveta u kojima, kao «ivi fosil» sa izvanrednim estetskim i znaèajnim lekovitim svojstvima, veoma dobro uspeva. Na Balkan je verovatno donet iz parkova evropskih zemalja, gde se nalazi još od davne 1730. godine (Vilotiæ D. 2004). U radu se daju preliminarni podaci o varijabilitetu 5000 kom. sadnica u rasadniku TAMARIS COMPANY u Banja Luci, proizvedenih iz semena uvezenog iz Kine. Utvrðena je znatna fenotipska raznovrsnost analiziranih svojstava (rasta i boje dugorasta, oblika i boje listova u toku leta i dr.) koja je, svakako, samo deo genetièkog varijabiliteta. Prisustvo individua sa estetskim osobinama nekih veæ poznatih ukrasnih kultivara ginka, objašnjava se èinjenicom da strane vrste u uslovima kultivisanja, zbog izmenjenih uslova nove sredine, mogu obrazovati u kratkom periodu niz novih mutanata (Tucoviæ A. & Ocokoljiæ M. 2002) saglasno zakonu M. I. Vavilova, o paralelnim serijama nasledne promenljivosti. Utvrðeni varijabilitet je osnova za sintezu atraktivnih kultivara ginka za potrebe pejzane arhitekture i proizvodnju sve potrebnijih lekovitih supstanci, a ostvariæe se primenom selekcije, generativnog i vegetativnog razmno- avanja. VARIABILITY OF Ginkgo biloba L. SEEDLINGS PRODUCED FROM THE SEEDS OF CHINESE PROVENANCE IN THE NURSERY TAMARIS COMPANY IN BANJA LUKA Ginkgo biloba, the oldest and the most resistant woody species on the planet, endemic of east China, but anthropogenically introduced to many parts of the world where, as a «living fossil» with extraordinary esthetical and significant medicinal properties, succeeds very well. It has probably been brought to the Balkans from the parks of the European countries, where it occurs since 1730 (Vilotiæ D., 2004). This paper presents the preliminary data on the variability of 5,000 seedlings in the nursery TAMARIS COMPANY, Banja Luka, produced from the seeds imported from China. The assessed considerable phenotypical diversity of the study properties (long shoot growth and colour, leaf shape and colour during summer, etc.) is by all means only a part of its genetic variability. The presence of the individuals with aesthetic properties of some known ginkgo ornamental cultivars is explained by the fact that exotic species in the conditions of cultivation, due to the changed conditions of the new environment, can form a series of new mutants in a short period (Tucoviæ A. & Ocokoljiæ M., 2002) consistent with the law by M. I. Vavilov, on the parallel series of inherited variability. The assessed variability is the base of the synthesis of attractive ginkgo cultivars for landscape architecture and of the production of increasingly demanded medical substances and it is going to be realised by selection and by generative and vegetative reproduction.
IV-Pos-38 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 155 Subotica, 30. novembar - 4. decembar 2004. GENETIÈKA ANALIZA NASLEÐIVANJA I MEÐUZAVISNOST KOMPONENTI PRINOSA, MORFOLOŠKO-BIOLOŠKIH KARAKTERISTIKA I PRINOSA ZELENE MASE CRVENE DETELINE (Trifolium pratense L) Sanja Vasiljeviæ 1 , Gordana Šurlan-Momiroviæ 2 , T. Ðivanoviæ 2 , M. Ivanoviæ 1 , V. Mihailoviæ 1 , S. Katiæ 1 i A. Mikiæ 1 1 Nauèni institut za ratarstvo i povrtarstvo, Novi Sad 2 Poljoprivredni fakultet, Novi Sad U radu je korišæeno pet divergentnih genotipova crvene deteline (dve sorte: Junior, Diana i tri populacije: Vlaška, BL-3, M-11) koje su dialelno ukrštene. Eksperimentalni deo ogleda je bio uraðen na oglednom polju Zavoda za krmno bilje Nauènog Instituta za ratarstvo i povrtarstvo u Novom Sadu. Tokom 1999 i 2000 godine su bila sprovedena dialelna ukrštanja izmeðu odabranih genotipova crvene deteline u svim kombinacijama, nakon èega je u dvogodišnjem periodu (2001-2002) izvršeno testiranje dobijenog potomstva u odnosu na ispitivane osobine (duina stabljike, debljina stabljike, duina centralne liske, prinos zelene mase po biljci, vreme poèetka cvetanja, perzistentnost i forma rasta). Prouèavani su: varijabilnost, naèin nasleðivanja, efekat gena, kombinirajuæe sposobnosti, kao i heritabilnost, ispitivanih osobina crvene deteline. Analizom fenotipske varijanse moe se zakljuèiti da je aditivan naèin delovanja gena imao dominantnu ulogu u nasleðivanju: duine stabljike, prinosa zelene mase po biljci, forme rasta, a kao najèešæi naèin nasleðivanja ispoljila se parcijalna dominacija. Veæe uèešæe dominantne varijanse u ukupnoj genotipskoj varijansi, kao i niske vrednosti heritabilnosti u uem smislu (h2 n) su dobijene za: debljinu stabljike (16,67 % i 23,07 %). Tokom obe godine (2001-2002) analizom path koeficijenta utvrðen je znaèajan direktan efekat duine stabljike na prinos zelene mase po biljci crvene deteline (9,09*, odnosno 6,23*). Direktan efekat debljine stabljike na prinos zelene mase po biljci u 2001. godini je bio izrazito negativan (r = -0,141), meðutim njegov pozitivan ukupni efekat je rezultat pozitivnih indirektnih efekata duine stabljike (r = 0,379) i forme rasta (r = 0,164) GENETIC ANALYSIS OF INHERITANCE AND MUTUAL RELATIONSHIPS AMONG YIELD COMPONENTS, MORPHOLOGICAL-BIOLOGICAL TRAITS AND YIELD OF GREEN MASS OF RED CLOVER (Trifolium pratense L) A diallel cross including five divergent red clover genotypes (two varieties: Junior and Diana, and three populations: Vlaška, BL-3 and M-11) has been used in this study. Experiments were conducted at the experiment field of Forage Crops Department, Institute of Field and Vegetable Crops, Novi Sad. In the course of 1999 and 2000, a diallel cross was made with the selected red clover genotypes. In the period 2001-2002, the obtained progenies were tested for stem length, stem thickness, length of central lamina, yield of green mass per plant, beginning of flowering, persistence and growth habit of red clover. These traits were analyzed for variability, mode of inheritance, gene effects, combining ability and heritability. The analysis of phenotypic variance showed that the additive gene action played the dominant role in the inheritance of stem length, yield of green mass per plant and growth habit. Partial dominance was the most frequent mode of inheritance. Increased proportion of dominant variance in the total genotypic variance and low values of narrow-sense heritability (h2 n) were obtained for stem thickness (16.67% and 23.07%, respectively). In both study years (2001-2002) by path coefficient analysis we obtained significant direct effect of stem length on yield of green mass per plant of red clover (9,09*, and 6,23* respectively). The direct effect of stem thickness on green mass per plant in 2001 was expressly negative (r = -0,141), but positive value of total effect of stem thickness on green mass per plant is result of positive values of indirect effects of stem length (r = 0,379) and growth habit (r = 0,164)
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Zbornik - Društvo genetičara Srbije

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