Genetic variability and heritability of some morphological and physiological traits in Fagus orientalis Lipsky along an elevation gradient in Hyrcanian forests

Abstract

Mohebi Bijarpasi, M., Rostami Shahraji, T., Samizadeh Lahiji, H., 2019. Genetic variability and heritability of some morphological and physiological traits in Fagus orientalis Lipsky along an elevation gradient in Hyrcanian forests. Folia Oecologica, 46: 45-53.The purpose of the present study was to evaluate the genetic variability and heritability of some morphological and physiological traits in Fagus orientalis Lipsky along an elevation gradient in northern forests of Iran. Beech leaves were sampled from southern and northern crown parts of healthy mature trees along an elevation gradient comprising sites situated at 700 m, 1,200 m and 1,700 m above the sea level. Our statistical analysis showed that the investigated traits differed significantly between the populations. The results indicated the lowest and the highest coefficients of variation for the high (1,700 m) and middle elevation populations (1,200 m) for leaf length, petiole length, leaf area, specific leaf area, dry weight, specific dry weight, leaf index and petiole index traits. With increasing elevation, mean leaf width, distance from leaf base to the leaf maximum width, dry weight and petiole index increased. The plasticity of leaf length, specific leaf area, specific dry weight, petiole index and petiole length peaked at middle elevation, and with increasing elevation, the plasticity of these traits declined. The distance from leaf base to the leaf maximum width had the highest coefficient of genetic (75.5%) and phenotypic (75.5%) variation. The heritability results showed that there were differences in all traits, and that the highest heritability was recorded for the distance from the leaf base to the leaf maximum width (99.95 %). The results suggest that the studied beech populations responded to the environmental changes by changing their leaf traits in different ways at different altitudes.

Phenotypic diversity and plasticity index of Eurycoma apiculata populations in Eastern Sumatra, Indonesia based on leaves morphology

“…Partitioning of the total variance at among populations and within-population was determined with a nested analysis of variance using the following model: Where; Yijk is the k replication observed in the j single plant of the i population, µ is the total mean value of samples, Pi is the population effect, T(P)ij is the nested effects of the single plant within population, and ijk is the error (Yang et al 2015;Bijarpasi et al 2019). The populations were set as fixed factors, while a genotype was considered as random factor (Batos et al 2010).…”

“…As a preliminary study, we will assess the phenotypic diversity of E. apiculata in a larger geographical scale based on the leaflet morphometric analysis. However, the main disadvantage in using solely a morphometric approach is the difficulty to distinguish observed variation in natural populations B I OD I V E R S ITA S 21 (7): 2923-2934, July 2020 2924 whether originate from genetic diversity or phenotypic plasticity, but this method is still frequently used researchers to estimate the morphological variability of plant species (Kajba et al 2015;Poljak et al 2015;Yang et al 2015;Stojnic et al 2016;Romeo et al 2016;Yang et al 2016;Han et al 2017;Sheng et al 2017;Bijarpasi et al 2019). The morphological traits of leaves in tree species can provide rich information about the evolution of genetics and phenotypic diversity.…”

Genetic diversity and structure of Oriental and European beech populations from Iran and Europe

“…Also the effect of geographical variation on morphological and anatomical leaf traits of Oriental beech was studied in different Iranian provinces. Significant variation in leaf traits was detected among the investigated natural populations likely as an effect of environmental adaptation or phenotypic plasticity (Bayramzadeh et al 2012, Bijarpasi et al 2019.…”

Keunikan Dan Keseragaman Klon Karet Irr 220 Dan Irr 429

“…Daun juga sangat adaptif terhadap perubahan lingkungan sekitar tanaman. Adaptasi tanaman dapat diselidiki melalui sifat dan variasi morfologi daunnya (Bijarpasi et al, 2019;Alcantara-Ayala et al, 20 20). D au n t anam an ka ret d apa t digunakan sebagai penciri secara visual dengan mengkombinasikan beberapa karakter.…”