Determination of The Grafting Performance of Some Hybrid Chestnut Genotypes and Cultivars

Abstract

This study has been carried out to determine the graft compatibility of newly registered some hybrid chestnut cultivars and genotype. The study was conducted between 2012-2018 at the Ondokuz Mayıs University and the Black Sea Agricultural Research Institute. In the study, ‘Marigoule’, Akyüz’, ‘Ali Nihat’ and ‘Macit 55’ cultivars were tested as scion and rootstock, and A41 genotype was tested only as rootstock. Grafting studies were carried out on generative rootstocks in 2014 and mother plants in 2015 using the chip budding method. Graft success (%) was determined 30 days after grafting and survival ratio (%) at the end of the vegetation period. Also rootstock, graft area and scion diameter were measured at the end of the vegetation period by digital caliper. As a result of the study, graft success and survival ratio were low in combinations created with ‘Ali Nihat’ and A41 generative rootstocks. Among the plants, the best generative rootstock was the ‘Macit 55’ cultivar in terms of graft success and survival ratio. ‘Macit 55’ rootstock had good graft compatibility with both itself (‘Macit 55’), ‘Akyüz’ and ‘Ali Nihat’ cultivars. ‘Marigoule’ cultivar has generally shown severe graft incompatibility with complex hybrids tested in the study. In the grafts made on clone plants, the ‘Ali Nihat’ rootstock was determined as a good rootstock for itself (‘Ali Nihat’), ‘Akyüz’ and ‘Macit 55’ cultivars.