Abstract
This study aimed to investigate the effects of grafting tomato on different tobacco rootstocks on quality factors and nicotine content. The commercial variety (Solanum lycopersicum ‘H2274’) (BIOTECH) of the tomato was used as the scion plant, and six different tobacco (Nicotiana tabacum L.) rootstocks were used: Taşova, Tekel, Muş, Samsun, Dişbudak, Hasankeyf cultivars. Cleft grafting method was used in all plants. Yield of non-grafted and grafted plants grown in open-field conditions was calculated, and there was a significant increase in yield in grafted tomatoes compared to non-grafted tomatoes. There was significantly increased lycopene and β-carotene levels (mg kg-1), especially in ‘Tekel’, ‘Taşova’, ‘Samsun’, and ‘Hasankeyf’ tobacco grafts. There was a statistically significant difference between grafted and non-grafted plants according to 2, 2-diphenyl-1-picrylhydrazyl (DPPH) free radical retention capacities and total phenol (TP) values. Evaluation of quality determinants including pH values, titratable acidity values (citric acid %), soluble solid content (SSC)(oBrix) , fruit size ratios, showed that tomatoes grafted with ‘Muş’ tobacco rootstock were of higher quality. There was no significant difference between grafted and non-grafted plants according to nicotine analysis of the tobacco-grafted tomatoes, and due to acceptable ranges of nicotin level on tobacco grafted tomato plants were considered to be suitable for consumption. It could be concluded that grafting practices have significantly positive effects on tomato yield and quality.
Highlights
At the same rate required to satisfy basic human needs, rising world population increases the demand for agricultural products
Cant difference in ‘Muş’ and ‘Dişbudak’ grafted tomatoes compared to the nongrafted control group, while there was a significant difference in the ‘Taşova’, ‘Tekel’, ‘Samsun’, and ‘Hasankeyf ’ grafted groups
A statistically significant difference was observed between grafted and non- grafted tomato groups according to total yield means
Summary
At the same rate required to satisfy basic human needs, rising world population increases the demand for agricultural products. In order to supply this growing demand, research on faster and more inexpensive plant production methods to enhance quality, yield potential, and tolerance against stressful conditions have been enhanced. In this scope, grafting practices are gaining more and more relevance every day. The yield of plants resistant to biological and environmental stress without damaging product quality positively effects crop and has become a method of producing plants with broader ecological tolerance. Tobacco-tomato combinations obtained using the cleft grafting method with tobacco rootstock was previously demonstrated to affect the plant growth, positively fruit yield, and quality in greenhouse-grown tomatoes (Yasinok et al, 2009)
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