Effect of infection by Fusarium root rot on the amino acid content in different forms of red clover
1994
Vanco, B. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (Slovak Republic))
When studying the tolerance of varieties of different forms of red clover to Fusarium root rot under greenhouse conditions, the amino acid content in the leaves was evaluated. The varieties were selected according to the level of ploidy and earliness. After two months the plants were inoculated with a mixture of conidia of Fusarium oxysporum and F. solani and after two months the level of necrosis was evaluated at the cross section of the root. For determination of amino acid content in the samples of leaves the limit degree of the plant attack by the root rot, ploidy level and growth-development rhythm were used. The total amino acid content of a variety is determined more by its growth and development rhythm, than by the degree of ploidy. After infection, the content of total amino acids decreased more markedly in the early form than in the late one, while the proportion of essential amino acids was decreasing in opposite direction.
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