Year 2026, Volume 11, Issue 1
| Year : | 2026 |
| Volume : | 11 |
| Issue : | 1 |
| Authors : | Magdalena KOLEVA, Plamena YANKOVA |
| Title : | INFLUENCE OF TWO CAUSAL AGENTS OF RUST IN LEGUMES TO CHLOROPHYLL CONTENT IN LEAVES |
| Abstract : | Rust diseases are of economic importance for many crops including legumes. The aim of the present study is to investigate the influence of Uromyces appendiculatus (Pers.:Pers.) Unger and Uromyces striatus Schroet. to chlorophyll content in leaves of common bean and alfalfa, respectively. The investigation was carried out during 2024 in Technical University of Varna, Bulgaria. Leaves from common bean and alfalfa with different disease intensity (DI) (from 5 to 100%), and leaves without symptoms were collected. Plant pigments are extracted according to the generally accepted protocol. The content of chlorophyll „a“ and chlorophyll „b“ were determined by spectrophotometer. The results show that in both crops there is an inversely proportional relationship between the content of chlorophyll “a” and “b” and the DI. In common bean, chlorophyll “a” /chlorophyll “b” is between 247.16 / 125.6 mg/m3 in symptomless leaves and 98.63 mg/ 37.33 mg/m3 at DI=100%. The differences are significant (p<0.05) except for the values at DI=5%. In alfalfa, in leaves without rust symptoms, the content of the plant pigment is respectively 226.87 / 53.30 mg/m3 and 134.6 / 41.07 mg/m3 at DI=75%. For chlorophyll “a”, the differences are significant only at DI=50% and DI=75%, and for chlorophyll “b” at DI=75%. The results show that these two rust pathogens in common bean and alfalfa affect leaf chlorophyll content differently in the two crops. This is likely a result of different host-pathogen interactions, leading to differences in basic physiological processes. |
| Keywords : | rust, common bean, alfalfa, chlorophyll content. |
ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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