BREEDING GARDEN BEAN FOR RESISTANCE TO BEAN WEEVIL (ACANTOSCELIDES OBTECTUS SAY) IN BULGARIA

As a result of a breeding program initiated in 1986, over 2900 accessions of bean from the collection of ‘K. Malkov’ Institute for Plant Genetic Resources and ‘Maritsa’ Vegetable Crop Research Institute have been investigated about the reaction to the bean weevil (Acantoscelides obtectus). Morphological evaluation of the plants and assessment of the degree of pod infestation from bean weevil under field conditions and natural background of infestation have been made.
The accessions that showed resistance of the pods were tested artificially with the weevil in a controlled environment.
There were selected accessions with resistance of the pods and of the seeds to Acantoscelides obtectus Say (78E6091, 78E6787, 78E6076, 78E6162, 82201206, etc.). Some of them were crossed with the ‘Maritsa’ Institute’s garden bean cultivars.
The inheritance of the resistance were studied, and there were thirteen resistance breeding lines developed, which possessed the most promising morphological and market traits.
Furthermore they were tested for bacterial, fungus and viral pathogens and have showed different levels of resistance which was combined along with their stabilized weevil resistance.
Currently two of them are recognized as new cultivars under the names ‘Tangra’ and ‘Pagane’.

IV Balkan Symposium on Vegetables and Potatoes

I. Poryazov, S. Sofkova, L. Krasteva

Ph. vulgaris L., local accessions, breeding, resistance, Acantoscelides obtectus

https://doi.org/10.17660/ActaHortic.2009.830.20