ISHS Acta Horticulturae 789: XV Meeting of the EUCARPIA Tomato Working Group
DEVELOPMENT AND CHARACTERISTICS OF THE FIRST BULGARIAN F1 TRANSGENIC TOMATO HYBRIDS |
| Authors: | Z. Danailov, A. Atanasov, P. Stoeva, P. Bumov, E. Stoimenova |
| Keywords: | Lycopersicon esculentum, Tomato spotted wilt virus (TSWV), heterosis |
| Abstract:
Data on the development of the first Bulgarian F1 transgenic tomato hybrids are presented. The hybrids analyzed were developed by crossing the tomato line R480, obtained at Agrobioinstitute and possessing a transgene (virus gene coding the nucleoprotein of the virus of Tomato spotted wild virus - TSWV) with tomato lines, developed at the Institute of Genetics and possessing a complex of valuable economic traits. Complete immunity to TSWV of the tomato hybrids was established by double testing because of the dominant inheritance of the resistance to TSWV. The transgenic hybrids along with their high resistance to TSWV showed high vigorous habitus, photosynthetic activity, earliness and yield. The inheritance of earliness and total productivity is overdominant with a high coefficient of inheritance and of mean fruit weight, from intermediate to slight overdominant. The first promising Bulgarian transgenic tomato hybrids were evaluated on the basis of their main economic traits. F1 hybrids (R480 × L.751) and (R480 × L.753) performed best, and showed resistance to TSWV, earliness, high productivity, large fruits and good quality. These hybrids are suitable for middle-early production in the open field. | |
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