Zbornik - Društvo genetičara Srbije

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176 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE IV-Pos-59 Subotica, 30. novembar - 4. decembar 2004. PROMENE VARIJABILNOSTI PRINOSA ZRNA PRI SESTRINSKOM UKRŠTANJU SOJE Mirjana Srebriæ Institut za kukuruz «Zemun Polje», Beograd – Zemun Prouèavali smo promene varijabilnosti prinosa zrna po biljci soje kod potomstava sestrinskih ukrštanja u odnosu na potomstva njihovih majki. Kao roditelji za sestrinska ukrštanja korišæene su tri najprinosnije F3 linije razvijene iz ukrštanja sorti KUNITZ x KADOR. Svaka od ovih linija korišæena je po jednom kao materinska komponenta. Testiran je prinos zrna po biljci potomstava sestrinskih ukrštanja i potomstava njihovih majèinskih linija. Promene varijabilnosti prinosa zrna su ocenjene preko koeficijenata varijacije (genotipskih i fenotipskih). Varijabilnost prinosa zrna po biljci je uglavnom bila blago poveæana kod potomstava sestrinskih ukrštanja u odnosu na potomstva njihovih majki. THE CHANGES OF SEED YIELD VARIABILITY IN SOYBEAN SISTER CROSSINGS The objective of experiment was the changes of seed yield per plant in progenies to F3 soybean sister crosses in compare to progenies of their maternal lines. The three lines with the highest yield, derived from crossing KUNITZ x KADOR cultivars were utilized as parents. Each derived line was used as a maternal component once. The grain yield per plant of both, lines and sister crosses of three combinations was tested. The changes of grain yield variability were evaluated by using coefficients of variation (genetic and phenotypic). The variability of soybean seed yield per plant was mostly delicate increased in progenies of sister crossings when compared to their maternal lines progenies.
IV-Pos-60 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 177 Subotica, 30. novembar - 4. decembar 2004. NASLEÐIVANJE PRINOSA ZRNA SILANOG KUKURUZA M. Seèanski 1 , T. ivanoviæ 2 , G. Todoroviæ 1 i Gordana Šurlan-Momiroviæ 2 1 Institut za kukuruz «Zemun Polje», Zemun Polje 2 Poljoprivredni fakultet Univerziteta u Beogradu, Zemun Cilj ovog istraivanja je bio da se za prinos zrna silanog kukuruza procene: varijabilnost inbred linija i njihovih dialelnih hibrida, heterozis u odnosu na boljeg roditelja i komponente genetièke varijabilnosti i heritabilnosti na bazi dialelnog seta. Ogled je postavljen po sluèajnom blok sistemu u èetiri ponavljanja tokom dve godine na lokaciji Zemun Polje. Utvrðeno je da na varijabilnost ove osobine znaèajno utièu genotip, godina i njihova interakcija. Inbred linija silanog kukuruza ZPLB402 je imala proseèno najveæi, a ZPLB405 najmanji prinos zrna kukuruza u obe godine ispitivanja. Analiza komponenti genetièke varijanse za prinos zrna pokazuje da je aditivna komponenta (D) bila manja od dominantne (H1 iH2) genetièke varijanse, a komponenta F koja je bila pozitivna i frekvencija dominantnih gena (u) i recesivnih gena (v) za ovu ispitivanu osobinu ukazuju da dominantni geni preovlaðuju nad recesivnim. Takoðe ovo potvrðuje i odnos dominantih prema recesivnim genima kod roditeljskih genotipova za prinos zrna (Kd/Kr>1) koji je veæi od jedinice u obe godine ispitivanja. Izraèunata vrednost proseènog stepena H1 / D dominacije je veæa od jedinice, što pokazuje da se u nasleðivanju ove osobine radi o superdominaciji u obe godine ispitivanja. Rezultati Vr/Wr regresione analize ukazuju na superdominaciju u nasleðivanju prinosa zrna. Takoðe je ustanovljeno i prisustvo nealelne interakcije, što ukazuje na potrebu prouèavanja efekta epistaze, jer moe imati veæi znaèaj kod pojedinih hibrida. Veæa vrednost dominantne od aditivne varijanse uticala je da se dobije visoka heritabilnost u širem smislu za prinos zrna u obe godine ispitivanja (98.71%(1997) i 97.19%(1998), a niska u uem smislu (11.9%(1997) i 12.2%(1998)). INHERITANCE OF GRAIN YIELD OF SILAGE MAIZE The aim of the present study was to evaluate the following parameters for the grain yield of silage maize: variability of inbred lines and their diallel hybrids, superior-parent heterosis and components of genetic variability and heritability on the basis of the diallel set. The two-year four-replicate trial was set up according to the randomised complete-block design at Zemun Polje. It was determined that a genotype, year and their interaction significantly affected variability of this trait. The highest, i.e. the lowest grain yield, on the average for both investigation years, was recorded in the silage maize inbred lines ZPLB402 and ZPLB405, respectively. The analysis of components of genetic variance for grain yield shows that the additive component (D) was lower than the dominant (H1 and H2) genetic variance, while a positive component F and the frequency of dominant (u) and recessive (v) genes for this observed trait point to prevalence of dominant genes over recessive ones. Furthermore, this is confirmed by the ratio of dominant to recessive genes in parental genotypes for grain yield (Kd/Kr>1) that is greater than unity in both years of investigation. The estimated value of the average degree of dominance H1 / D exceeds unity, pointing out to superdominance in inheritance of this trait in both years of investigation. Results of Vr/Wr regression analysis indicate superdominance in inheritance of grain yield. Moreover, a registered presence of non-allelic interaction points out to the need to study effects of epistasis, as it can have a greater significance in certain hybrids. A greater value of dominant than additive variance resulted in high values of broad-sense heritability for grain yield in both investigation years (98.71%, i.e. 97.19% in 1997, i.e. 1998, respectively), and low values of narrow-sense heritability (11.9% in 1997 and 12.2% in 1998).
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DRUŠTVO GENETIČARA SRBIJE SERBIAN
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Uvodno predavanje Opening lecture
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ZAVRŠNO PREDAVANJE CLOSING LECTURE
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A Aksentijeviæ I. 194 Aleksiæ J.
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Zbornik - Društvo genetičara Srbije

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