LOW Ca2+/Na+ RATIO AND EFFICIENCY OF MOBILIZATION OF Ca2+ FROM SHOOT TISSUES TO KERNEL DETERMINE SALINITY TOLERANCE IN GROUNDNUT (ARACHIS HYPOGAEA L.)

Article Id: LR-121 | Page : 396-405
Citation :- LOW Ca2+/Na+ RATIO AND EFFICIENCY OF MOBILIZATION OF Ca2+ FROM SHOOT TISSUES TO KERNEL DETERMINE SALINITY TOLERANCE IN GROUNDNUT (ARACHIS HYPOGAEA L.).Legume Research-An International Journal.2013.(36):396-405
M.A.K Azad*, M. S. Alam1, M.A. Hamid and M.A. Hossain2 makazad.pbdbina@gmail.com
Address : Plant Breeding Division, Bangladesh Institute of Nuclear Agriculture, Bangladesh Agricultural University Campus, Mymensingh-2202, Bangladesh

Abstract

Variety, salinity level and growth stage showed highly significant (Ppod filling>flowering stage. The tolerance of a variety based on economic yield was conferred by its low Ca2+/Na+ ratio in the shoot tissues. Moreover, the variety that could mobilize Ca2+ more at flowering stage from shoot tissues to reproductive organs particularly kernel under salinity stress attained more tolerance. The excess Na+ in shoot tissues of salinity stressed groundnut does not move to flower rather a portion to the kernel. In contrast, K+ and Ca2+ move from shoot tissues to all reproductive organs including flower with being the highest to the kernel.

Keywords

Ca2+/Na+ ratio Economic yield Groundnut K+/Na+ ratio Salinity tolerance.

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