Genotypic variation in biomass production and nitrogen use efficiency in pearl millet [Pennisetum americanum (L.) Leeke]

    Alagarswamy, G and Bidinger, F R (1985) Genotypic variation in biomass production and nitrogen use efficiency in pearl millet [Pennisetum americanum (L.) Leeke]. In: Genetic Aspects of Plant Mineral Nutrition: Proceedings of the Second International Symposium on Genetic Aspects of Plant Mineral Nutrition, organized by the University of Wisconsin, Madison, June 16–20, 1985. Developments in plant and soil sciences, 27 . Martinus Nijhoff, Dordrecht, pp. 281-286. ISBN 978-94-010-8102-3

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    Abstract

    Twenty diverse pearl millet genotypes ranging from landraces to high yielding hybrids were studied for genotypic variation in nitrogen (N) use efficiency in high (100 kg N/ha) and low fertility (20 kg N/ha) over two years in the field. The combined data over years and fertility levels indicated that despite taking up similar amounts of N, genotypes differed significantly in biomass production and thus in N use efficiency. A West African genotype, Souna B, had N use efficiency values 32% higher than the less efficient Indian genotype BJ 104 even though both genotypes had similar N uptake. An increase in N fertility decreased N use efficiency since the percentage increase in biomass was smaller than the percentage increase in N uptake.

    Item Type: Book Section
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Series Name: Developments in plant and soil sciences
    Uncontrolled Keywords: Field study, Genotypic variation, Nitrogen uptake, Nitrogen use efficiency, Pennisetum americanum,
    Subjects: Mandate crops > Millets > Pearl Millet
    Others > Genetics and Genomics
    Depositing User: Mr Siva Shankar
    Date Deposited: 05 May 2014 05:40
    Last Modified: 05 May 2014 05:40
    URI: http://oar.icrisat.org/id/eprint/7933
    Acknowledgement: We wish to thank Drs. R B Clark, J W Maranville and N. Seetharama for reviewing the manuscript. The technical assistance of Mr. D S Raju is gratefully acknowledged.
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