Biologia Plantarum

, Volume 43, Issue 3, pp 423–426 | Cite as

Vigna Radiata Seed Germination under Salinity

  • K. Promila
  • S. Kumar
Article

Abstract

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.

amylase cotyledons embryo axis imbibition potassium seedling growth sugars 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • K. Promila
    • 1
  • S. Kumar
    • 2
  1. 1.CCS Haryana Agricultural UniversityHisar-India
  2. 2.Regional CentreSugarcane Breeding InstituteKarnal-India

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