Assessment of genetic distance of parental lines of F1 hybrids of winter oilseed rape and its relationship with phenotypic distance and heterosis effect
Journal Title: Rośliny Oleiste - Oilseed Crops - Year 2010, Vol 31, Issue 2
Abstract
Selection of parental lines is a very important step of hybrid breeding programmes. Knowledge of the general (GCA) and specific (SCA) combining ability is helpful in the selection of parental genotypes and theoretically greater heterosis effect is achieved by the crossings of lines with significant genetic distance (GD). However, variable results have been obtained by many authors in the studies conducted on different plant materials.Taking this into account, in Heterosis Laboratory investigations of the relationship between genetic and phenotypic distance of parental lines of F1 hybrids, heterosis effect and yielding ability have been initiated.F1 hybrids and their parental lines were investigated in field trials in the design of completely randomized blocs, in four replications, four environments, in crop seasons of 2006/2007, 2007/2008 and 2008/2009. Statistical analysis of seed yield and heterosis effects in all environments has been performed. Moreover the phenotypic distance between parental lines of F1 hybrids using Mahalanobis distance has been evaluated. Genetic distance between parental lines of F1 hybrids has been investigeted using PCR, RAPD and AFLP methods and calculated according to the formula given by Nei and Li (1979). The relationship between seed yield, heterosis, phenotypic and genetic distance has been established by correlation coefficient.It has been stated that the yield of investigated hybrids as well as heterosis effect are not significantly correlated with GD and PD for all investigated breeding materials. Probably it is due to low genetic distance of restorer lines used in investigations, being doubled haploids developed from one genotype BO 20/48.
Authors and Affiliations
Alina Liersch, Wiesława Popławska, Maria Ogrodowczyk, Krystyna Krótka, Iwona Bartkowiak-Broda, Jan Bocianowski
Keywords
Related Articles
- EP ID EP59608
- DOI -
- Views 81
- Downloads 0
Biologiczne i produkcyjne skutki zgryzania roślin rzepaku ozimego przez zwierzęta z rodziny jeleniowatych (Cervidae)
Oszacowanie rozmiarów ilościowych strat w produkcyjności roślin i łanu rzepaku ozimego, spowodowanych przez zwierzęta jeleniowate przeprowadzono w dwóch sezonach wegetacyjnych – 2007/2008 i 2008/2009 na Śląsku Zielonym....
Annual differences in migration of stem weevils to rapeseed crop at Opava
Migration of weevils to rapeseed crop was monitored using yellow traps. Dominant species was Ceutorhynchus pallidactylus. In 2008 females flied to rapeseed after two weeks of males migration, low number of imagoes was ca...
Molecular detection of the primary inoculum of the pathogenic fungi [i]Leptosphaeria maculans[/i] and L. biglobosa in Lower Silesia air samples
The ascomycete fungal species[i] Leptosphaeria maculans[/i] and [i]L. biglobosa[/i] are the cause of stem canker — one of the most important diseases of oilseed rape in Poland and worldwide. The fungi account for great y...
The effect of rhizobacteria on germination of Brassica napus L. seeds in the presence of heavy metals (Cd, Cu, Pb, Zn)
The influence of Pseudomonas fluorescens, Bacillus sp., Flavobacterium sp., Bacteroidetes bacterium, Serratia entomophila, Variovorax sp. and Luteibactor rhizovicina bacteria on winter rape germination in the presence of...
Wpływ trineksapaku etylu, chlorku chloromekwatu, metkonazolu i tebukonazolu na pokrój roślin i plonowanie rzepaku ozimego w zależności od terminu stosowania
Pokrój łanu rzepaku można łatwo modyfikować poprzez stosowanie regulatorów wzrostu, przy czym istotne znaczenie ma termin ich stosowania. Celem stosowania regulatorów w rzepaku w terminie jesiennym jest przede wszystkim...