The Journal of Horticultural Science & Biotechnology
Vol. 69 No: 6
Genetics of Resistant to Tomato Yellow Leaf Curl Virus in Tomato
M.A. KASRAWI and A. MANSOUR
The genetics of resistance to tomato yellow leaf curl virus (TYLCV) were studied in TYLCV-resistant lines developed by crossing wild species of Lycopersicon pimpinellifolium, L. hirsutum and L. peruvianum resistant to TYLCV with susceptible L. esculentum cv. Special Back. Crosses between TYLCV-resistant lines derived from the same wild species produced progenies similar to their parents in their level of resistance. However, progenies from interspecific crosses showed greater resistance than either parent suggesting that the genes for TYLCV resistance contributed by different wild species are probably not the same (non-allelic). The gene action for TYLCV resistance also varied with the source of resistance. Analysis of F1, F2 and BC populations for lines derived from L. pimpinellifolium showed that resistance to TYLCV in these lines is a quantitative trait with some dominance.
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