A comparison of the anatomical structure of susceptible Helianthus annuus L., resistant H. [Helianthus] argophyllus L. and their progeny
1997
Duletic-Lausevic, S. (Faculty of Biology and Botanical Garden, Beograd (Yugoslavia)) | Mihaljcevic, M. (Institute of Field and Vegetable Crops, Novi Sad (Yugoslavia))
Anatomical differences were analysed between the inbred line HA-89 of Helianthus annuus, which is susceptible to the fungal pathogen Phomopsis/Diaporthe helianthi, and a resistant wild population of Helianthus argophyllus. The anatomical structure of the interspecific hybrid was also studied and compared against the progenitors. Plant materials, especially leaves, were collected at the anthesis stage of the plant. The resulst obtained after the analysis of the epidermal and vascular tissues were further processed using SYSTAT statistical package. The results showed that the characteristics of the interspecific hybrid were closer to the susceptible than the resistant parent component. Considering the inicial assumption that differences in the dimensions of the epidermal and vascular tissues could have significant influence on variability in resistance among genotypes, negative conclusion can be drawn.
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