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Nitrate Assimilation and Nitrogen Harvest in Uniculm ‘Gigas’ Wheat (Triticum aestivum L.)
Author(s) -
Abdin M. Z.,
Kaim M. S.,
Bansal K. C.,
Abrol Y. P.
Publication year - 1994
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.1994.tb00558.x
Subject(s) - nitrate reductase , lamina , nitrogen , nitrogen assimilation , nitrate , agronomy , shoot , biology , assimilation (phonology) , growing season , botany , poaceae , nitrogen cycle , chemistry , ecology , linguistics , philosophy , organic chemistry
Contribution of the upper laminae designated as 7, 8 and 9 (flag), to the total reduced nitrogen was determined by two different methods; integration of nitrate reductase activity over the entire growing season of individual laminae, and laminae removal at ear emergence. The values obtained by these methods were: 20, 14, and 12 %, and 23, 15, 12 %, respectively. The in vivo nitrate reductase activity was relatively higher in the lamina 9, which contributed an extra 8 % towards total reduced nitrogen when the other laminae were removed from the shoot. No such compensatory response was observed when either lamina 7 or 8 was retained.