Variability of red clover (Trifolium pratense L.) for the process of biological nitrogen fixation
1994
Lugic, Z. (Agricultural Research Institute "Serbia", Krusevac (Yugoslavia). Forage Plants Centre) | Konstantinov, K. | Ivanovic, M. | Marinkovic, D. | Milosevic, G.
Four cultivars of red clover were evaluated. High variability, for dry mass per plant, root mass, number of nodules and nitrogenase activity was detected both among and within cultivars. Variations for plant height and root length were significantly lower, while variability for crude protein content was very low. The closest correlations were noted for yield of dry mass per plant and the following traits: plant height, root mass and number of nodules. Crude protein content was in negative correlation with a majority of the other parameters tested. Correlations for nitrogenase and other traits were intermediate to close, but due to the low number of correlation pairs they were significant only for crude protein content. The results obtained indicate that the variability of red clover for intensity of biological nitrogen fixation is high.
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