Relations between graft success and structural hormones on walnut (Juglans regia l.)

In this study, in walnuts (Juglans regia L.) grafted at one month intervals during one year, the relations between the graft success and the levels of structural hormones in the scions were evaluated. As for the months, the graft success was the highest in February (100 %), while it was lowest in June (54 %). As a consequence of the biological, it was determined that the structural hormones in the scions changed by months, but they generally became dense in the 4th, 7th, 9th and 10th bands. The effective inhibitions were not significantly recorded in none of the months. Finally, any relation between the graft success and the levels of the structural hormones was not considered

The effects on seed germination and seedling growth of the tissue extracts obtained from different organs of walnut (Juglans regia l.)

The effects on germination and hypocotyl and primary developments of cucumber seeds of the tissue extracts, which were added to germination mediums as 2 ml, 4 ml, 6 ml and 8 ml, belonging to phloem, bark with and without buds, bark of shoot tip, root bark and tip buds were evaluated. While no germination in the mediums of 6 ml and 8 ml extracts was not seen, germinations were observed in the mediums of 2ml and 4 ml extracts and control treatments. Tissue extracts were recorded to have shown an inhibiting effect. In addition, total flavan contents of different parts changed between 4.32 mg/g and 8.27 mg/g

Changing of flavan contents at some organs of walnut seedlings (Juglans regia l.) exposed to the controlled grafting conditions

In this study, changing of the flavans, which are one of the phenolic compounds, in the shoot tips, the roots and the bases of lateral branches was followed. The flavan changes after 1, 15, 30 and 45 days in the organs of two years old seedlings of walnut (Juglans regia L.) under controlled grafting conditions with 26+2 °C temperature and 60-70 % humidity were determined by TLC (Thin Layer Chromatography). The observations in the first 30 days were evaluated in relation to the anatomical structure of the graft union, and the changes of 50 days were considered connected with changing of the phenolic compounds in case of exposing to the controlled conditions. Consequently, the flavans decreased 35.95 % in the shoot tips, 32.68 % in the bases of lateral branches and 19.38 % in the roots in first 30 days. But, they increased 48.86 % in the shoot tips and 34.29 % at the roots while reducing 68.81 % in the bases of lateral branches from 30th day to 50th day. In addition, from the 1st day to 50th day they showed a decrease of 4.66 % in the shoot tips and of 79.00 % in the base of lateral branches, but an increase of 8.27 % in the root