Pattern of plasticity to irradiance levels and genotypic correlations between structural and physiological leaf traits in Iris pumila

Archives of Biological Sciences

关键词: light intensity;    phenotypic plasticity;    genotypic correlations;    Iris pumila;   

DOI  :  10.2298/ABS1103655V

来源: DOAJ

【 摘 要 】

Plasticity to irradiance and genotypic correlations between structural andphysiological leaf traits in Iris pumila were investigated in an experimentconducted at a sun-exposed dune habitat in the Deliblato Sands. A sample ofsix native, genetically different clones were covered with a neutral screenwhich transmitted ~35% of daylight, so that one clone-half of each cloneexperienced reduced sunlight, while the other one full sunlight. LMA,stomatal density, Ψleaf, enzymatic and non-enzymatic antioxidants and lipidperoxidation were determined in unshaded and shaded leaves of the same clone.It was found that the plasticity index, PIv was higher for physiological thanfor structural traits. Genotypic correlations between trait pairs were high,but rarely significant, in contrast to the correlation matrices which weresignificantly different between unshaded and shaded leaves.

【 授权许可】

Unknown