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Morphological variability of leaves of Sorbus domestica L. in Croatia

100%

Poljak I., Kajba D., Ljubic I., Idzojtic M.

Acta Societatis Botanicorum Poloniae

2015

tom 84

nr 2

The paper studies the morphological variability of the service tree populations in the continental and Mediterranean regions of Croatia. The inter- and intra-population variability, as well as eco-geographic population differentiation, was established on the basis of eight measured morphological characteristics of two types of leaflets (lateral and terminal) and two derived ratios, using descriptive and multivariate statistical methods. The conducted research established a high variability of morphological characteristics. In comparison with lateral leaflets, terminal leaflets showed a higher degree of variability for the majority of the studied variables. The differences between the trees within populations, as well as the differences between populations, were confirmed for all studied characteristics. The study also confirmed a trend of population variations according to the eco-geographic principle. Populations from climatically different and geographically distant habitats, in other words from the Mediterranean and the continental region, differed in the majority of studied characteristics. In addition to the established pattern of ecotypical variability between the continental and the Mediterranean regions, the clinal variability with regard to altitude and mean annual temperature was also confirmed. Small, although statistically significant clinal variability with regard to the longitude was recorded for two measured characteristics. The conducted study provided insights into the variability of the service tree populations in Croatia, which is a basis for further research that should be implemented in order to produce guidelines for the breeding and conservation of genetic resources of this rare and endangered noble hardwood species.

Morphological and molecular differentiation of the Croatian populations of Quercus pubescens Willd. [Fagaceae]

76%

Franjic J., Liber Z., Skvorc Z., Idzojtic M., Sostaric R., Stancic Z.

Acta Societatis Botanicorum Poloniae

2006

tom 75

nr 2

123-130

Taxonomy of the genus Quercus L. is very complicated and often controversial because of its great variability and intense gene flow among the related species. The purpose of this research was to determine morphological and molecular variation, relationships and taxonomic status of the Croatian populations of Quercus pubescens Willd. using morphological analysis of the leaves and RAPD-PCR technique. The results of the morphological and molecular analyses were very similar, both showing differentiation of the southern (Mediterranean) from the northern (Continental) pubescent oak populations. These two groups were clearly separated and the estimated gene flow among the populations that belong to different groups (Nm=1.38) is significantly less than among the populations that belong to the same group (Nm=3.70). The obtained results were compared to the available studies. This study confirms a high variability of the Q. pubescens populations, but differences were not so big to confirm the opinion of existence of several species in this area. The conclusion is that the southern Croatian populations could be pure Q. pubescens populations, while the peculiarities of the northern Croatian populations originate probably from the Q. petraea introgression.

Ograniczanie wyników

2 Acta Societatis Botanicorum Poloniae

2 Idzojtic M.

1 Franjic J.

1 Kajba D.

1 Liber Z.

1 Ljubic I.

1 Poljak I.

1 Skvorc Z.

1 Sostaric R.

1 Stancic Z.

1 2015

1 2006

Wyniki wyszukiwania

Morphological variability of leaves of Sorbus domestica L. in Croatia

Morphological and molecular differentiation of the Croatian populations of Quercus pubescens Willd. [Fagaceae]