IN VITRO EVALUATION OF RELATIVE TOLERANCE OF MOTH BEAN CULTIVARS TO CADMIUM STRESSR. GANESH, SUDHA R. MATHUR AND K. K. BORAAbstract Callus tissue of three cultivars of Vigna aconitifolia L. cv. Jaadia, Jwala and RMO-40 were screened for their growth responses and bioaccumulation of L-proline under cadmium (Cd) strees. The observations of various growth parameters were recorded 7.14 and 21 days after treatment. The fresh and dry weights of callus were significantly reduced from 50 to 74 per cent in Jaadia, 12 to 64 per cent in Jwala and 29 to 4q per cent in ItN10-40 during the callus growth period with the addition of Cd (0.05 mM) to media. The highest relative growth rate reduction was recorded in Jaadia and least in RMO40 in Presence of Cd. (0.05 vim), thus indicating latter cultivar to be relatively more tolerant to Cd stress. This tolerance in RMO40 has been found to be associated with enhanced level of proline content under Cd stress.
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