Zbornik - Društvo genetičara Srbije

IV-Pos-22 ZBORNIK ABSTRAKATA III KONGRESA GENETIÈARA SRBIJE 139
Subotica, 30. novembar - 4. decembar 2004.
ANALIZA EFEKTA GENA U NASLEÐIVANJU BROJA ZRNA
PO KLASU KOD HIBRIDA JECMA
Milomirka Madiæ, M. Kuburoviæ i Marija Kraljeviæ-Balaliæ 1
Agronomski fakultet, Èaèak
1
Poljoprivredni fakultet, Novi Sad
U dialelnom ukrštanju, bez reciproènih pet divergentnih genotipova jeèma (Vada,
Ðerdap, NS-293, Jagodinac i Sladoran) regresionom analizom varijanse i kovarijanse
prouèavan je naèin nasleðivanja i efekat gena za broj zrna po klasu.
Regresionom VrWr i WrW’ analizom utvrðeno je odsustvo interalelne interakcije, što
opravdava primenu odabranog modela. U nasleðivanju broja zrna po klasu regresija je
ukazala na dominantan efekat gena, kao i na nejednak raspored dominantnih i recesivnih
gena kod odabranih genotipova. Najveæi broj dominantnih gena za broj zrna po klasu
imaju genotipovi Jagodinac, Vada i NS-293, dok recesivnih Ðerdap i Sladoran.
Dobijeni rezultati ukazuju da kod dvorednih genotipova jeèma veæi broj dominantnih
gena dovodi do poveæanja broja zrna po klasu, a poveæan sadraj recesivnih gena ima
suprotan efekat.
THE ANALYSIS OF GENE EFFECT IN THE INHERITANCE OF KERNEL
NUMBER PER SPIKE IN BARLEY HYBRIDS
In diallel crossing excluding reciprocal ones, the five divergent genotypes of barley
(Vada, Ðerdap, NS-293, Jagodinac and Sladoran) were involved and the mode of inheritance
and gene effect studied using the regression analysis of variance and covariance for
the number of kernels per spike.
The absence of interallel interaction was established through the regression analysis
VrWr and WrW’ which justified the application of the model chosen. In the inheritance
of of the number of kernels per spike, the regression pointed to the dominant gene effect
as well as to the unequal distribution of the dominant and recessive genes in the genotypes
chosen. While the genotypes Jagodinac,Vada and NS-293 had the highest number
of the dominant genes , those of Ðerdap and Sladoran had the highest number of the recessive
ones for the number of kernels per spike.
The obtained results denoted that, in two-rowed genotypes, the higher number of dominant
genes had led to a larger number of kernels per spike, whereas the higher number of
the recessive genes had brought about the opposite effect.