Field performance of fodderbeet and seabeet germination, growth and ion relations under saline soil conditions
1998
Niazi, B.H. (National Agricultural Research Centre, Islamabad (Pakistan). Plant Nutrition Labs.) | Rozema, J. | Salim, M. | Yasin, M.
Germination, growth and ion relations of fodderbeet (B. vulgaris cv Majoral) and seabeet (B. maritima) were studied at 200 and 400 mM NaCl under field conditions. Direct sowing without addition of salt in garden soil did not affect germination percentage of both subspecies. However a slight lower germination percentage was recorded when seeds were sown in sand for nursery purpose. Leaf area increased significantly under saline conditions in both subspecies, while leaf number increased significantly in seabeet only. Fresh and dry weight of fodderbeet increased significantly at 200 mM NaCl. The increase was probably due to larger leaf area in fodderbeet. Relative growth rate and net assimilation rate increased significantly upto 200 mM NaCl in fodderbeet and upto 400 mM NaCl in seabeet. There was no change recorded in specific leaf area in fodderbeet. Specific leaf weight of seabeet increased with a decrease in specific leaf area. An antagonistic effect on the uptake of Na1+ and K1+ in root and shoot of both subspecies was recorded under saline conditions. The chloride content increased significantly in the presence of increasing salinity. There was no effect of salinity on the uptake of Ca2+, but Mg2+ concentration decreased in root and shoot at 400 mM NaCl.
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