Naslov
Estimation of some Genetic Parameters through Generation Mean Analysis in Two Winter Wheat Crosses

Autori
Dvojković, Krešimir ; Drezner, Georg ; Novoselović, Dario ; Lalić, Alojzije ; Kovačević, Josip ; Babić, Darko

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
2. skup hrvatskih genetičara s međunarodnim sudjelovanjem : zbornik sažetaka = 2nd congress of Croatian geneticists with international participation : Book of abstracts / Franekić, Čolić, Jasna ; Ugarković, Đurđica - Zagreb : Hrvatsko genetičko društvo, 2005, 119-119

Skup
2. skup hrvatskih genetičara s međunarodnim sudjelovanjem = 2nd congress of Croatian geneticists with international participation

Mjesto i datum
Supetar, Hrvatska, 24.09.2005. - 27.09.2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
winter wheat; generation mean analysis; inheritance; gene effects; heritability

Sažetak
The objective of this study was to estimate some genetic parameters for three important quantitative traits (grain yield components) in two winter wheat crosses (Divana/Srpanjka and Soissons/Žitarka). Eight generations (namely ; P1, P2, F1, F2, Bc1.1. (P1xF1), Bc1.2. (P2xF1), RBc1.1. (F1xP1) and RBc1.2. (F1xP2)) were raised and subjected to generation mean analysis for detecting the nature of gene effects responsible for inheritance of kernels number, single grain weight and mass of grains per spike of the longest culm. Digenic epistatic model was adequate to explain variation in generation means for single grain weight in Divana/Srpanjka and for mass of grains per spike in Soissons/Žitarka crossing combinations. Additive gene effects were more important for mass of grains per spike in Soissons/Žitarka cross, while dominance and epistatic gene effects were predominant in controlling inheritance of single grain weight in Divana/Srpanjka cross. For number of kernels in both crosses, single grain weight in Soissons/Žitarka and mass of grains per spike in Divana/Srpanjka crossing combinations digenic epistatic model failed to explain variation in generation means, implying more complex nature of inheritance and/or influence of the environment on the expression of those traits. The estimated values of narrow-sense heritability was higher for mass of grains (0, 50-0, 52) than number of grains (0, 42-0, 35) and single grain weight (0, 29-0, 41). From breeder's point of view better chances for improvement based on esitmated heritability in narrow-sense and estimated gene effects for studied quantitative characters, offers crossings with predominant influence of additive (fixable) components.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

Napomena
Radi potpunosti zapisa, molim unesite ISBN zbornika, admin (2007-06-06)

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