Reproductive Potential Of In Vitro Raspberry Cultivars Grown On Poorly Productive Soils

Biotechnological approaches for the production of raspberry planting material is a fundamental technology to obtain healthy, homogeneous and cultivar authentic plants.The objectives of the present study were raspberry cultivars, such as: 'Willamette', 'Meeker', 'Samodiva' and 'Magdalena' - a candidate cultivar. The experiment was carried out in the collection plantation of the Research Institute of Stockbreeding and Agriculture. Troyan, in the period of 2018/2019. The field experiment was set with various intra row spacing (0.30 and 0.50) and inter row spacing (3.00 m).The highest average fruit weight was found in 'Meeker' (2.91 g) at a planting distance of 0.50 m and 'Magdalena' - a candidate cultivar (2.87 g) at a planting distance of 0.30 m. The highest average yield per 1 m(2) was registered for 'Willamette' (1707.84 g), 'Magdalena' - a candidate cultivar (1605.92 g) and 'Meeker' (1469.17 g) at intra row spacing of 0.30 m.