Zbornik - Društvo genetičara Srbije

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122 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Pos-5 Subotica, 30. novembar - 4. decembar 2004. UTICAJ VISOKOG INTENZITETA SELEKCIJE NA PROMENU ADITIVNE VARIJANSE KOMPONENTI PRINOSA KUKURUZA N. Deletiæ, S. Stojkoviæ, M. Biberdiæ, V. Ðuriæ i S. Gudiæ Poljoprivredni fakultet Univerziteta u Prištini, Lešak U radu je ispitivana 31 SSD linija iz ZP-Syn-1 C0 i37izZP-Syn-1 C3 populacije kukuruza. Nakon odabira i umnoavanja semena linija u 2000, ogledi su obavljeni u periodu 2001-2002 u Kruševcu i Zemun Polju, po RCBD metodi sa tri ponavljanja. Nakon tri ciklusa rekurentne selekcije došlo je do znaèajnog snienja srednje vrednosti homozigotnih potomstava za procenat poleglih i slomljenih biljaka, visinu biljke i klipa, ali i za broj redova zrna. Poveæane su srednje vrednosti za broj zrna u redu i masu 1000 zrna. Razlike u duini klipa i prinosu zrna nisu bile znaèajne. Nakon tri ciklusa je došlo do znaèajnog suenja aditivne varijabilnosti za procenat poleglih i slomljenih biljaka, duinu klipa i broj redova zrna.Smanjenje vrednosti za ostala svojstva nije bilo statistièki znaèajno. Utvrðene su i znaèajne vrednosti heritabilnosti u uem smislu. THE EFFECT OF A HIGH SELECTION INTENSITY ON THE CHANGE OF MAIZE YIELD COMPONENTS’ ADDITIVE VARIANCE A set of 31 SSD lines from ZP-Syn-1 C0 and 37 from ZP-Syn-1 C3 maize population was studied in this paper. After line selection and seed multiplication in 2000, the trials were carried out in 2001-2002, at Krusevac and Zemun Polje, in RCB design. After three cycles of recurrent selection we observed a significant decrease of homozygous progenies’ means of root and stalk lodged plants percent, plant and ear height, but also of row number per ear. The means of grain number per ear and 1000 grain mass were increased, and the differences in ear lenght and grain yield were not significant. After three cycles, a significant narrowing of additive variance happened for root and stalk lodged plant percent, ear lenght, and row number per ear, but this narrowing was not significant for the other traits. We also found significant values of narrow-sense herutability.
IV-Pos-6 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 123 Subotica, 30. novembar - 4. decembar 2004. PHENOTYPE STABILITY OF YIELD COMPONENTS OF PROTEIN SUNFLOWER Dijana Dijanoviæ, Vesna Stankoviæ i I. Mihajloviæ IIP «SERBIA», Centar za poljoprivrednu i tehnološka istraivanja, Zajeèar The study analyses the phenotype stability of the components of three inbred lines of sunflower (Helianthus annuus L.) in the third, fourth and fifth year of self-pollination. The stability parameters have been counted by application the Eberhart and Russel (1966) model. According to the regression coefficient, the investigated lines showed satisfactory stability referring to the content of proteins in seed and 1000 seeds mass. The most stable line proved to be the D4441 line in the third year of self-pollination. The best genotype stability foe the 1000 seeds mass was achieved by the line Rs 4 I 10 in the fourth year of self-pollination.
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DRUŠTVO GENETIČARA SRBIJE SERBIAN
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Zbornik - Društvo genetičara Srbije

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