biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 43:423-426, 2000 | DOI: 10.1023/A:1026719100256

Vigna Radiata Seed Germination under Salinity

K. Promila1, S. Kumar2
1 CCS Haryana Agricultural University, Hisar-, India
2 Regional Centre, Sugarcane Breeding Institute, Karnal-, India

Salinity reduced mung bean (Vigna radiata Wilczek) radicle and root elongation, delayed and inhibited hypocotyl elongation and mobilization of reserves from the cotyledons to the embryo axis. Fresh and dry masses and water content of the embryo axes were reduced. Under salinity, a net leakage of K to the media increased with time and increasing NaCl concentrations. Sugars present in the cotyledons of seeds were of primary importance for growth of the embryo axis upto 18 h after sowing whereas breakdown of starch by amylase contributed later, the contribution being delayed and reduced with increasing NaCl concentration. Even when amylase activity in the cotyledons was progressively reduced with increasing NaCl concentration, the increasing contents of soluble sugars in the cotyledons indicated that sugars were not limiting for mung bean seedling growth under salinity.

Keywords: amylase; cotyledons; embryo axis; imbibition; potassium; seedling growth; sugars
Subjects: amylase, salinity; cotyledons, salinity; embryo axis, salinity; imbibition, salinity; potassium, salinity; saccharides, sugars, NaCl stress; salinity, seed germination; seed germination, salinity; Vigna radiata

Published: September 1, 2000  Show citation

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Promila, K., & Kumar, S. (2000). Vigna Radiata Seed Germination under Salinity. Biologia plantarum, 43(3), 423-426. doi: 10.1023/A:1026719100256
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