Agricultural University, BG - 4000 Plovdiv, Bulgaria
ROYCHEV, V., 2014. Inheritance of the Colour of berry juice in hybrid combinations between seeded and seedless vine cultivars (Vitis vinifera L.). Bulg. J. Agric. Sci., 20: 843-848
Inheritance of the trait colour of berry juice in hybrid combinations between seeded and seedless vine cultivars has been studied. It has been found that the white and red colours of berry juice in F1 progeny are in a ratio from 2.3:1 to 6.0:1. The theoretical ratios 4:1 and 3:1 between seedlings with white juice and those with red juice have a high degree of reliability of the zero hypotheses for the majority of the investigated crosses. When parent cultivars with red berry skin are crossed, the seeded seedlings have white and red colour of berry juice, while seedless plants are with red colour only. When the parthenocarpic parents are with white berry skin, the seedless seedlings have white and red colour of berry juice. The ratios between the two colours in the seeded and seedless plants differ significantly. Because of this research, seedless plants with red berry juice have been developed for the first time, which provide rich and varied initial material for further breeding procedures and selection of elite forms and cultivars.