Research Information System
1st Central Asia Congress on Modern Agricultural Tecniques and Plant Nutrient, Bishkek- Krygyzstan, Bishkek, Kyrgyzstan, 1 - 03 October 2013, vol.2, pp.43-50
ABSTRACT
The effect of calcium [Ca(NO3)2
and CaCl2] on yield and some physiological attributes [leaf
relative water content (RWC), chlorophyll, carotenoid, proline, and lipid
peroxidase] of two different statice cultivars (Limonium sinuatum ‘Compindi White’ and ‘Compindi Deep Blue’) grown
in containers under salinity conditions were investigated. Statice plants were
subjected to three saline soils [0.085 (control), 0.308 and 0.674 % total salt]
and four calcium treatments [0, 400, 800 and 1200 ppm). Additional nutrient
requirements of the plant were supplied by Hoagland solution (excluding Ca).
Nutrient solution was applied once every two week. pH and EC values of the
solution were maintained between 6-7 and 1.5-2 mS/cm. A statistical difference
was not observed between the treatments in terms of yield in both statice
cultivars. Increased salt values, decreased the number of flower per plant
according to control. RWC, total chlorophyll and carotenoid values were
decreased under salt stress conditions in both cultivars compared with their
own controls. Proline and lipid peroxidase activities were increased by
increasing salt stress. Supplemental calcium added to nutrient solution
significantly improved physiological attributes affected by salt stress. RWC,
total chlorophyll and carotenoid content of leaf increased, but Proline and
lipid peroxidase content of leaf samples decreased with increasing Ca doses.
The results of the present study suggest that calcium applications on nutrient
solution can be used as a strategy in order to increase tolerance against
saline conditions in statice cultivars.