Zbornik - Društvo genetičara Srbije

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130 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Pos-13 Subotica, 30. novembar - 4. decembar 2004. MEÐUZAVISNOST USLOVA OPRAŠIVANJA, OPLODNJE I PRINOSA SEMENA SUNCOKRETA J. Joksimoviæ, J. Atlagiæ, V. Mikliè, N. Dušaniæ i Z. Sakaè Nauèni institut za ratarstvo i povrtarstvo, Novi Sad Kod èetiri komercijalno vana hibrida suncokreta (NS-H-45, NS-H-111, NS-H-702 i Velja) i njihovih roditeljskih komponenti (Ha-74B, Ha-98B, CMS-3-8B, Ha-26B, RHA-583, RHA-R-Pl-2/1 i RHA-113N) u dve godine su ispitivana sledeæa svojstva: duina krunice cevastog cveta, sadraj nektara, vitalnost polena, poseta pèela, % oplodnje i prinos semena. Meðuzavisnost ispitivanih svojstava je utvrðena Path coeficient analizom. Prosti koeficijenti korelacije su pokazali da su % oplodnje i poseta oprašivaèa imali visoko znaèajan pozitivan uticaj na prinos semena. Znaèajan pozitivan efekat je imala duina krunice na sadraj nektara, a znaèajan negativan efekat je imao sadraj nektara na vitalnost polena. Najveæi znaèajan direktan efekat na prinos semena je imao procenat oplodnje, dok je negativan, ali ne i znaèajan efekat imao sadraj nektara na prinos semena. Koeficijent determinacije je iznosio 0,8071. INTERDEPENDENCE OF POLINATING CONDITIONS, SEED SET AND SEED YIELD OF SUNFLOWER Corolla length, nectar content, pollen viability, honey bee visitation, seed set and seed yield have been observed on four commercially important sunflower hybrids (NS-H-45, NS-H-111, NS-H-702 and Velja) and their parental components (Ha-74B, Ha-98B, CMS-3-8B, Ha-26B, RHA-583, RHA-R-pl-2/1 and RHA-113N) in the course of two years. Interdependence of tested traits has been determined using path coefficient analysis. Simple correlation coefficients have shown that seed set and visiting of the pollinators had highly significant, positive influence on the seed yield. Corolla length had significant positive effect on the nectar content while the nectar content had negative significant influence on the pollen viability. Seed set shown the biggest significant direct effect on the seed yield while the nectar content had negative, but not important effect on the seed yield. Coefficient of determination was 0.8071.
IV-Pos-14 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 131 Subotica, 30. novembar - 4. decembar 2004. GENETIÈKA VARIJABILNOST I KOEFICIJENTI KORELACIJE NAJVANIJIH AGRONOMSKIH SVOJSTAVA SELEKCIONISANIH POPULACIJA CRVENE DETELINE (Trifolium pratense L.) Z. Lugiæ, J. Radoviæ i G. Jevtiæ Institut za istraivanja u poljloprivredi «SRBIJA», Centar za krmno bilje, Kruševac U radu su prikazani osnovni parametri varijabilnosti, kao i genetièki i fenotipski koeficijenti korelacije dve selekcionisane populacije crvene deteline (A i B) za sledeæe osobine: prinos suve mase po biljci, visinu biljke, broj izdanaka po biljci, broj internodija na glavnom izdanku, sadraj sirovih proteina (SSP), sadraj sirove celuloze (SSC) i sadraj ukupnih šeæera (SUŠ). Varijabilnost pojedinaènih biljaka za sva ispitivana svojstva je bila visoka i najveæa za prinos suve mase po biljci (CVF 17,78-22,42%) i broj izdanaka po biljci (CVF 20,74-21,21%). Najnia varijabilnost je konstatovana za visinu biljke i SSP. Populacija A je ostvarila veæe srednje vrednosti i intervale varijacije za sve ispitivane osobine. Pozitivne, jake i vrlo znaèajne genetièke korelacije kod populacije A zabeleene su za prinos suve mase, kao najvaniju osobinu, visinu biljke i SSC (0,776** i 0,754**). Srednje jake, pozitivne korelacije su konstatovane za prinos suve mase po biljci i visinu biljke, kao i za SSC i visinu biljke. Korelativni odnos SSP i SUŠ je sa ostalim svojstvima bio slabo pozitivan do jako i znaèajno negativan. Negativne genetièke korelacije dobijene su za visinu biljke, broj izdanaka po biljci i SUŠ, dok su visina biljke i SSP, kao i SSP i SSC bili u znaèajnom negativnom korelativnom odnosu (- 0,404* i -0,832**). Kod populacije B su dobijene nie vrednosti genetièkih koeficijenata korelacije, ali su odnosi ispitivanih osobina bili slièni kao kod populacije A. Visoka varijabilnost pojedinaènih biljaka za sve ispitivane osobine ukazuje na to da su prouèavane populacije perspektivne za dalje programe oplemenjivanja. GENETIC VARIABILITY AND COEFFICIENTS OF CORRELATION FOR AGRONOMIC MOST IMPORTANT TRAITS OF SELECTED POPULATIONS OF RED CLOVER (Trifolium pratense L.) The objective of this work was investigation of two selected population of red clover (A and B). The traits dry matter yield (DMY), plant height, number of tillers per plant, number of internodes on main shot, crude protein content (CPC), crude fiber content (CFC) and total sugar content (TSC) was determined during this research. Average values, interval of variation, coefficient of variation and genetic and phenotypic coefficient of correlations were calculated for all investigated traits. Plant variability of all traits was very high and highest for DMY per plant and number of tillers per plant (CVF 17,78-22,42% and 20,74-21,21%, respectively). Lowest variability is detected for plant height and CPC. Highest averages and interval of variation were detected for population A. Positive, strong and high significant genetic coefficient of correlations for population A are estimated between DMY (most important agronomic trait) and plant height (0,776**) and between DMY and CFC (0,754**). Correlation coefficients of medium intensity were calculated for DMY and plant height and for CFC and plant height. Negative genetic correlations were detected for plant height, number of tillers per plant ant TSC, while plant height and CPC and CPC and CFC show significant negative coefficient of correlation (- 0,404* i -0,832**, respectively). For population B significantly lower coefficients of correlation were calculated, but relationships among traits were similar to population A. High variability of all plants for all examined traits shows that populations are very perspective for further breeding process.
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DRUŠTVO GENETIČARA SRBIJE SERBIAN
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A Aksentijeviæ I. 194 Aleksiæ J.
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Zbornik - Društvo genetičara Srbije

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