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- Title
The Response of Different Genotypes of Calendula to Aphis fabae Attack.
- Authors
Baciu, Adriana Daniela; Sestras, Adriana; Sestras, Radu; Buruiana, Monica
- Abstract
Calendula (pot marigold) has an extremely wide range of use, due to its properties, is well adapted to temperate climatic zones and easy to grow. The aphids can cause serious damages and they also represent the main vectors of viruses. That is why one of the objectives of pot marigold breeding is to create resistant cultivars. In present study, 45 genotypes of Calendula, including six species (C. officinalis, C. alata, C. arvensis. C. stellata, C. suffruticosa, C. tripterocarpa) and different cultivars, were analyzed for their response to Aphis fabae attack, in natural conditions of infestation. From among all genotypes, 26 (representing 57.8%) have not been attacked. Even if 11 genotypes have provided statistical differences for the serious attack frequency and 15 for intensity of the attack, only three of these have provided statistical differentiations for attack degree. The results demonstrate that aphids are pests that occur in the culture of Calendula with significant frequency, intensity and attack degree. In the same conditions, genotype really influences the attack, some variants being registered without attack signs, while others were obviously preferred by pests. The large variability recorded for Calendula genotypes allowed the identification of potential genitors for resistance to aphids' attack, respectively for marigold breeding and obtaining new valuable cultivars.
- Subjects
CALENDULA (Genus); CALENDULA officinalis; BEAN aphid; APHIDS; CULTIVARS; DISEASE resistance of plants; PLANT breeding; PLANT hybridization; SELECTION (Plant breeding)
- Publication
Bulletin of the University of Agricultural Sciences & Veterinary Medicine Cluj-Napoca. Horticulture, 2009, Vol 66, Issue 1, p498
- ISSN
1843-5254
- Publication type
Article