The influence of grafting on yield of two tomato cultivars (Lycopersicon esculentum Mill.) grown in a plastic house
2004
Kacjan Marsic, N. | Osvald, J. (Ljubljana Univ. (Slovenia). Biotechnical Fac., Agronomy Dept.)
The influence of different grafting methods on the success of grafting and fruit yield of two tomato cultivars (Lycopersicon esculentum Mill.) was studied in a greenhouse trial in Ljubljana. The cultivars used as scion were 'Monroe' and 'Belle', and as rootstock 'PG 3' and 'Beaufort'. Two grafting methods were applied: cleft grafting and tube grafting. Grafted plants were then hand planted in a plastic house. The treatments applied in each cultivar were: cleft grafting onto 'PG 3' and 'Beaufort', and tube grafting onto 'PG3' and 'Beaufort', and ungrafted control. The following measurements were recorded: number of plants that survived until the transplanting date; fruit yield (g plant*[-1)) and total number of fruits harvested per plant. The high percentage (79-100%) of succesful grafting observed for both tomato scions and rootstocks, using cleft and tube grafting methods, indicated that both grafting methods are suitable for tomato grafting. A positive effect of grafting was recorded when 'Monroe' was used as scion, and 'Beaufort' as rootstock. When 'Belle' was used as scion, a negative effect of grafting was observed, since the total fruit yield of non-grafted plants was significantly higher than that of plants grafted onto both rootstock cultivars. Grafting is thus considered an important technique for sustainable greenhouse production of fruit-bearing vegetables.
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