Physiological Aspects of Growth and Development of Vicia faba
- 148 Downloads
This study was initiated to establish the pattern of nitrate uptake, nitrate reduction and nitrogen fixation by Vicia faba at an experimental farm. Nitrate uptake was estimated by measuring the nitrate reductase activity (NRA) on the youngest developing leaf. Nitrogen fixation (NF) was measured with the acetylene reduction assay on root systems. The highest NRA occurred at the end of flowering two weeks before the highest NF was recorded during mid pod filling. NRA was correlated with the rainfall. After a period of rainfall the NRA decreased, whereas the NF increased. From these results it was inferred that the decrease in NF activity during the vegetative period up to the end of flowering was due to flooding or rainfall resulted in a higher uptake of nitrate which caused a reduction of NF activity. Nitrate fertilisation did not increase seed yield and suppressed NF.
Growth and development of plants grown hydroponically in a growth chamber depended strongly on temperature. Developmental stages were plotted against data on accumulated daily temperatures in a growth chamber experiment. An attempt was made to use these kind of data to predict certain developmental growth stages under field conditions.
KeywordsNitrogen Fixation Seed Yield Nitrate Reductase Activity Nitrate Uptake Night Temperature
Unable to display preview. Download preview PDF.
- Abdalla, M.M.F. and Fischbeck, G., 1978. Growth and fertility of stocks of field beans grown under three temperature regimes and the effect of natural water stress on seed index of a collection of Vicia faba Z. Acker und pflanzenbau (J. Agron. and Crop Science ) 147, 81–91.Google Scholar
- Dantuma, G. and Klein Hulze, J.A., 1979. Production and distribution in dry matter, and uptake, distribution and redistribution of nitrogen in Vicia faba major and minor. In: Some current research on Vicia faba in Western Europe. Eds. D.A. Bond, C.T. Scarascia-Mugnozza and M.H. Poulson. Commission of the European Communities, 369–406.Google Scholar
- Gehriger, W. and Keller, E.R., 1979. Einfluss des Kopfens der Triebe auf die Versorgung der Bluten bei der Ackerbohne (Vicia faba L.) mit 14C. Schweizerische landwirtschaftliche Forschung 18, 59–80.Google Scholar
- Hebblethwaite, P.D., Ingram, J., Scott, R.K. and Elliot, J., 1977. Some factors influencing yield variation of field beans (Vicia faba). Scottish hort. Res. Inst. Bull. 15, 20–27.Google Scholar
- Said, H., Hegazy, T. and Iman, R.M., 1967. Growth, productivity and compositional contents of beans (Vicia faba) seeds as affected by different night-temperatures. Flora Abt. A. Bd. 569–576.Google Scholar
- Went, F.W. 1957. Experimental control of plant growth, Waltham, Mass. USA.Google Scholar