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Nitrate concentration and nitrate reductase activity in the leaves of three legumes and three cereals *
Author(s) -
NAMBIAR P. T. C.,
REGO T. J.,
RAO B. SRINIVASA
Publication year - 1988
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1988.tb02091.x
Subject(s) - nitrate reductase , sorghum , biology , pennisetum , vigna , agronomy , nitrate , arachis hypogaea , poaceae , crop , ecology
SUMMARY Nitrate concentration and nitrate reductase activity (NRA) were studied in the leaves of soybean ( Glycine max ), groundnut ( Arachis hypogaea and cowpea ( Vigna unguiculata ) and sorghum ( Sorghum bicolor ), pearl millet ( Pennisetum americanum ) and maize ( Zea mays ) at three nitrogen fertiliser levels in two field experiments. Higher nitrate concentrations were detected in the leaves of groundnut, cowpea and pearl millet than in sorghum and maize. Nitrate content in the leaves and leaf NRA were not related across crop species, nor was a generalised pattern of leaf NRA and leaf nitrate observed within legumes or within cereals. Nitrogen application resulted in higher nitrate availability in the leaves, with varied leaf NRA.