Seasonal variation of leaf ecophysiological traits of iris variegata observed in two consecutive years in natural habitats with contrasting light conditions
2015
Autori:
Živković, UrošMiljković, Danijela
Barišić Klisarić, Nataša
Tarasjev, Aleksej
Avramov, Stevan
Tip dokumenta:
Članak u časopisu (Objavljena verzija)
,
© Serbian Biological Society
Metapodaci
Prikaz svih podataka o dokumentuApstrakt:
The amount and pattern of individual phenotypic responses to seasonal
changes in environmental conditions were determined in clones of Iris
variegata growing in differing light habitats. For the purpose of the
study, 97 clonal plants of the rhizomatous herb I. variegata that
experienced different light conditions in their two native habitats were
selected: one along the top and slope of sand dunes and one in woodland
understories. Two fully expanded leaves that had developed during
spring, summer and fall in two consecutive years were sampled from each
of these clones. Six leaf traits affecting the photosynthetic rate of a
plant -morphological (specific leaf area), anatomical (stomatal density)
and physiological (total chlorophyll concentration, chlorophyll
a/chlorophyll b ratio, carotenoid concentration, chlorophyll
a/carotenoid ratio) exhibited significant plastic responses in the two
different light habitats. To test whether these traits differ between
exposed and shaded habitats as well as during different vegetation
periods, we used the repeated model analysis of variance (ANOVA).
Results of the repeated ANOVA revealed statistically significant effects
of year, habitat and period of vegetation season. Patterns of changes
during growing seasons were year-specific for almost all analyzed
traits.
Ključne reči:
light conditions; seasonal change; I. variegata; ecophysiological traits; Deliblato SandsIzvor:
Archives of Biological Sciences, 2015, 67, 4, 1227-1236
DOI: 10.2298/ABS150311099Z
ISSN: 0354-4664