Comparison Betwen the Effect of Two Rootstocks on African Rose CV. Plum Trees Growth, Flowering, Yield and Fruit Quality.

This research was carried out at a private orchard at South Tahreer city, EL-Beheira Governorate, Egypt, during two successive seasons (2022/2023- 2023/2024). The experiment was conducted on 5-year-old trees, which planted with uniform growth on sandy soil spaced at 3×4 m of African rose cv. plum grafted on two rootstocks (Nemaguard and Marianna 2624). The aim of work is to evaluate the effect of the two rootstocks on vegetative growth, flowering, yield and fruit properties. Results of this investigation proved that African rose cultivar trees grafted on Marianna rootstock had an earlier flowering date, less days to reach full bloom, greatest yield, and fruit quality. Generally, African rose on Marianna showed a good response to all growth characters (shoot length, shoot diameter, tree height, tree diameter, leaf area and chlorophyll content). Also, leaf mineral content and endogenous hormones were affected by the rootstock. So, we can nominate Marianna as a suitable rootstock to African rose cv.