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Zbornik - Društvo genetičara Srbije

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IV-Pos-14 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 131<br />

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

GENETIÈKA VARIJABILNOST I KOEFICIJENTI KORELACIJE<br />

NAJVANIJIH AGRONOMSKIH SVOJSTAVA SELEKCIONISANIH<br />

POPULACIJA CRVENE DETELINE (Trifolium pratense L.)<br />

Z. Lugiæ, J. Radoviæ i G. Jevtiæ<br />

Institut za istraivanja u poljloprivredi «SRBIJA», Centar za krmno bilje, Kruševac<br />

U radu su prikazani osnovni parametri varijabilnosti, kao i genetièki i fenotipski<br />

koeficijenti korelacije dve selekcionisane populacije crvene deteline (A i B) za sledeæe<br />

osobine: prinos suve mase po biljci, visinu biljke, broj izdanaka po biljci, broj internodija<br />

na glavnom izdanku, sadraj sirovih proteina (SSP), sadraj sirove celuloze (SSC) i<br />

sadraj ukupnih šeæera (SUŠ). Varijabilnost pojedinaènih biljaka za sva ispitivana<br />

svojstva je bila visoka i najveæa za prinos suve mase po biljci (CVF 17,78-22,42%) i broj<br />

izdanaka po biljci (CVF 20,74-21,21%). Najnia varijabilnost je konstatovana za visinu<br />

biljke i SSP. Populacija A je ostvarila veæe srednje vrednosti i intervale varijacije za sve<br />

ispitivane osobine. Pozitivne, jake i vrlo znaèajne genetièke korelacije kod populacije A<br />

zabeleene su za prinos suve mase, kao najvaniju osobinu, visinu biljke i SSC (0,776**<br />

i 0,754**). Srednje jake, pozitivne korelacije su konstatovane za prinos suve mase po<br />

biljci i visinu biljke, kao i za SSC i visinu biljke. Korelativni odnos SSP i SUŠ je sa<br />

ostalim svojstvima bio slabo pozitivan do jako i znaèajno negativan. Negativne genetièke<br />

korelacije dobijene su za visinu biljke, broj izdanaka po biljci i SUŠ, dok su visina biljke<br />

i SSP, kao i SSP i SSC bili u znaèajnom negativnom korelativnom odnosu (- 0,404* i<br />

-0,832**). Kod populacije B su dobijene nie vrednosti genetièkih koeficijenata<br />

korelacije, ali su odnosi ispitivanih osobina bili slièni kao kod populacije A. Visoka<br />

varijabilnost pojedinaènih biljaka za sve ispitivane osobine ukazuje na to da su<br />

prouèavane populacije perspektivne za dalje programe oplemenjivanja.<br />

GENETIC VARIABILITY AND COEFFICIENTS OF CORRELATION FOR<br />

AGRONOMIC MOST IMPORTANT TRAITS OF SELECTED POPULATIONS<br />

OF RED CLOVER (Trifolium pratense L.)<br />

The objective of this work was investigation of two selected population of red clover (A<br />

and B). The traits dry matter yield (DMY), plant height, number of tillers per plant, number<br />

of internodes on main shot, crude protein content (CPC), crude fiber content (CFC)<br />

and total sugar content (TSC) was determined during this research. Average values, interval<br />

of variation, coefficient of variation and genetic and phenotypic coefficient of correlations<br />

were calculated for all investigated traits. Plant variability of all traits was very<br />

high and highest for DMY per plant and number of tillers per plant (CVF 17,78-22,42%<br />

and 20,74-21,21%, respectively). Lowest variability is detected for plant height and CPC.<br />

Highest averages and interval of variation were detected for population A. Positive,<br />

strong and high significant genetic coefficient of correlations for population A are estimated<br />

between DMY (most important agronomic trait) and plant height (0,776**) and<br />

between DMY and CFC (0,754**). Correlation coefficients of medium intensity were<br />

calculated for DMY and plant height and for CFC and plant height. Negative genetic correlations<br />

were detected for plant height, number of tillers per plant ant TSC, while plant<br />

height and CPC and CPC and CFC show significant negative coefficient of correlation (-<br />

0,404* i -0,832**, respectively). For population B significantly lower coefficients of correlation<br />

were calculated, but relationships among traits were similar to population A.<br />

High variability of all plants for all examined traits shows that populations are very perspective<br />

for further breeding process.

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