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Medientyp:
E-Artikel
Titel:
EFFECTS OF NITRATE NITROGEN ON GROWTH, NODULATION AND DISTRIBUTION OF ¹⁴C-LABELLED PHOTOSYNTHATES IN COWPEA
Beteiligte:
KHAN, AZIZ A.;
KHAN, ATTIYA A.
Erschienen:
Martinus Nijhoff/Dr W.Junk Publishers, 1981
Erschienen in:
Plant and Soil, 63 (1981) 2, Seite 141-147
Sprache:
Englisch
ISSN:
0032-079X;
1573-5036
Entstehung:
Anmerkungen:
Beschreibung:
Nodulated plants of cowpea (Vigna unguiculata (L.) Walp) were grown for 6 weeks in sand culture in a range of constantly maintained levels of NO₃-N. The application of NO₃-N in the rooting medium increased the dry weight of the plants, particularly the shoot system. High levels of NO₃-N resulted in drastic reduction in the proportion of ¹⁴C-labelled photosynthates translocated to the nodulus, with a corresponding increase to the stem and roots. Nodules on plants grown without NO₃-N had a higher ¹⁴C-activity.