Yazar "Akhoundnejad, Yelderem" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim Yok
    Öğe
    EFFECTS OF SALINITY STRESS ON CHLOROPHYLL AND CAROTENOID CONTENTS AND STOMATA SIZE OF GRAFTED AND UNGRAFTED GALIA C8 MELON CULTIVAR
    (Pakistan Botanical Soc, 2017) Yarsi, Garip; Sivaci, Aysel; Dasgan, H. Yildiz; Altuntas, Ozlem; Binzet, Riza; Akhoundnejad, Yelderem
    Salinity is known as the most important abiotic stress that decreases crop production and plant growth, and changes the anatomy and morphology of plants. In this study, the growth rate of grafted and ungrafted melon plants were studied under salinity stress. Maximus F-1, Shintoza F-90 F-1 and Nun 9075 F-1 (Cucurbita maxima x Cucurbita moschata) were used as a rootstock and Galia C8 melon cultivar was used as a scion. In this study, the stomata size and chlorophyll and carotenoid contents were investigated. According to the results, chlorophyll and carotenoid contents and stomata length and width of upper and lower surface of leaf were generally reduced under salinity stress.
  • Küçük Resim Yok
    Öğe
    Silicon-induced Salinity Tolerance Improves Photosynthesis, Leaf Water Status, Membrane Stability, and Growth in Pepper (Capsicum annuum L.)
    (Amer Soc Horticultural Science, 2018) Altuntas, Ozlem; Dasgan, H. Yildiz; Akhoundnejad, Yelderem
    Salt stress is a major problem worldwide because it decreases yields of many important agricultural crops. Silicon is the second-most abundant element in soil and has numerous beneficial effects on plants, particularly in alleviating stress-related impacts. Pepper is an important crop in the Mediterranean region, but pepper varieties differ in their salinity tolerances. The objective of this research was to test the ability of silicon to mitigate effects of salt stress in both salt-sensitive and salt-tolerant cultivars. Salt damage was evaluated by measuring biomass, photosynthetic-related variables, leaf water potential, and membrane damage. We found that the addition of silicon solute to a growth medium was highly effective in improving plant growth by enhancing photosynthesis, stomatal conductance (g(S)), leaf water status, and membrane stability, which in turn led to higher biomass production in salt-stressed pepper plants, especially in a salt-sensitive cultivar. From an agronomic viewpoint, application of Si may provide economically relevant productivity improvements for salt-sensitive pepper genotypes grown under moderate salinity conditions and for salt-tolerant genotype grown under higher-salinity conditions.