پديد آورندگان :
عصاره، محمدحسن نويسنده موسسه تحقيقات حنگلها و مراتع كشور Assareh, M.H , شريعت، آناهيتا نويسنده موسسه تحقيقات جنگلها و مراتع كشور Shariat, A
كليدواژه :
Pigments , Prolina , Soluble sugars , مقاومت به شوري , اكاليپتوس , salt stress , Eucalyptus
چكيده لاتين :
Salinity is One of the environmental stresses that impose a reduction or delay in germination and
supress establishment and growth of both halophyte and glycophyte plants. This research was carried
out to estimate the salinity resistance of four Eucalyptus species: Eucalypus sargentii, E.occidentalis,
E. salubris and E. globules at germination phase and seedling growth phase. Five NaCI level (0, 50,
100, 150 and 200 mM) treatments were used in three replication in a factorial experiment design based
on completely randomized plots. Radicule length, plumule length, vigour index germination
percentage, germination speed and germination index were estimated at germination and seedling
stage. Pigments (total chlorophyle, chlorophyle a, b and carotene), soluble sugar, prolin, amas, leaf
area, relative water content, water saturation different, specific leaf area and leaf water content per unit
leaf area were measured in growing stage on six mounth plant. Increased of salt stress leds to
increased prolin, soluble sugar and decreased of pigments and growth parameters in four species. The
highest quantity for vigour index and germination speed respectively belonged toE. occidentalis and
E. salubris. In growth stage E. sargentii had highest quantity in total chlorophyll, chlorophyll a,
carotene, prolin, soluble sugar and leaf area. The lowest quantity in germination and growth stage was
belonged to E. globules.
