Genetic distance in relation with specific combining abilities and heterosis for vegetative traits in maize
Конференцијски прилог (Објављена верзија)
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Prediction of maize hybrids performances based on the genetic distance between their parents has long been an
important path in the implementation of molecular marker technology in maize breeding programs. In this study
genetic distance assessment of six maize inbred lines was done using 21 SSR primers. In the analysis, 92 alleles
were detected with a mean of 4.38 per locus. Genetic distance (GD) determined using Simple matching
coefficient (SM) between inbred lines ranged from 0.11 to 0.549. Using UPGMA clustering method a
dendrogram was constructed in wich inbred lines were separated into two main cluster, one containing 2 inbred
lines, and the other one with 4 inbreds. The bigger cluster furthermore was divided into two smaller subclusters.
This classification was in accordance with known pedigree data of analysed genotypes. Six investigated inbred
lines were furthermore crossed according to an incomplete diallel design forming 15 hybrid combinations. These
genotypes were t...ested in field trials on 3 locations together with inbred lines per se. In this study maize
vegetative traits: plant height and leaf number per plant were analyzed. Statistically significant specific
combining abilities (SCA) and high parent heterosis (HPH) were calculated for both traits. Spearman’s rank
correlation coefficient between genetic distance and SCA for plant height and leaf number was positive and
statistically significant while the correlation between high parent heterosis and genetic distance although positive
was not significant.
Извор:
60th Annual Maize Genetics Conference, Saint Malo, France,March 22 – March 25, 2018. - Book of Abstracts, 2018Финансирање / пројекти:
- Побољшање својстава кукуруза и соје молекуларним и конвенционалним оплемењивањем (RS-MESTD-Technological Development (TD or TR)-31068)