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Differential Nitrogen Uptake, Utilization and Biomass Accumulation by Some Sorghum Cultivars
Author(s) -
Gill Maqsood A.,
Zia M. S.
Publication year - 1991
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1991.tb00904.x
Subject(s) - cultivar , sorghum , shoot , dry matter , agronomy , relative growth rate , biomass (ecology) , nitrogen , biology , growth rate , horticulture , chemistry , mathematics , geometry , organic chemistry
Five cultivars of sorghum viz: PU‐7, Sarokartuho, Bagdar, Redjanpur and Potobar 4–8 were studied for their growth, N uptake and utilization efficiency at 5 mM N in solution culture. These cultivars differed significantly in their dry matter accumulation and relative growth rate of shoot. Differences in shoot/root of the cultivars were also notable. Markedly different mean N intake rate among the sorghum cultivars was 108 μmol g −1 root dry wt. hr −1 in Bagdar and 53 μmol g −1 root dry wt. hr −1 in PU‐7 and Redjanpur. Both relative accumulation rate of N and efficiency of biomass accumulation per unit N absorbed also differed appreciably among the cultivars.