Seed reserves of chickpea in relation to molybdenum supply
2005
Nautiyal, N. | Singh, S. | Chatterjee, C.
Chickpea (Cicer arietinum L), cv K75 plants were grown till maturity at 0.00001, 0.0001, 0.001 (deficient), 0.02 (adequate), 0.2 (supranormal) and 2.0 (excess) mg dm(-3) Mo in refined sand. The pod and seed yield of chickpea were at a maximum at 0.2 mg dm(-3) Mo, which is ten times higher than the usual Mo requirement. The seed weight of chickpea was decreased more by low (<0.02 mg dm(-3)) than excess (2 mg dm(-3)) Mo. In chickpea seeds, the concentrations of starch, reducing, non-reducing and total sugars were highest at 0.02 mg dm(-3) Mo and decreased by Mo stress (<>0.02-0.2 mg dm(-3)). In comparison, the content of methionine, lysine, legumin, vicilin, total proteins, protein and non-protein nitrogen in seeds of chickpea decreased variably both at low (<0.02 mg dm(-3)) and high (>0.2 mg dm(-3)) Mo. Both deficiency and excess of Mo deteriorated the quality of seeds by increasing the content of phenols, cysteine and albumin and decreasing that of methionine, lysine, legumin and vicilin protein fractions, apart from reducing the seed weight. The quality of seeds deteriorated more by deficiency than excess of Mo in chickpea.
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