ISHS Acta Horticulturae 825: I Balkan Symposium on Fruit Growing
EVALUATION OF GENETIC RESOURCES OF FRUIT CROPS AS DONORS OF COLD AND DISEASE RESISTANCE IN LITHUANIA |
| Authors: | R. Rugienius, T. Siksnianas, D. Gelvonauskienė, G. Staniene, A. Sasnauskas, I. Zalunskaite, V. Stanys |
| Keywords: | cultivars, adaptivity, biotechnology, resistance genes, in vitro |
| Abstract:
Under conditions of global climatic change plant adaptivity is one of the main factors of successful plant growing in temperate climatic zone. In the Lithuanian Institute of Horticulture cold and disease resistance of fruit plants was investigated. Phenology, blossoming abundance and shoot injury, growth, resistance to scab (Venturia inaequalis (Cke) Wint.), apple blotch (Phyllosticta mali Pr. at Del.), European cancer (Nectria galligena Bres.) were studied in 10 new apple (Malus domestica Borkh.) cultivars during 1999-2006. Blossom injuries caused by spring frosts were evaluated of 161 pear cultivars. Twelve cultivars did not show any symptoms of injury by frosts but blossoms of 13 ones were heavily damaged or killed. Interspecific hybridisation of Ribes, were used for development of new disease resistant plant forms. Scab resistance (Vf1 gene) markers of apple were used for breeding new cultivars or evaluation of introduced ones. Homologs of thale cress (Arabidopsis thaliana (L.) Heynh.) COR47 and COR15 genes in different orchard plants: herbal - strawberry (Fragaria ananassa Duch.) and woody - sour cherry (Prunus avium L.), sweet cherry (Prunus cerasus L.) and their hybrids with different winter hardiness, were isolated and their expression during the cold acclimation process was evaluated. Transcription of COR genes increase during cold acclimation. | |
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