Grafting "Pioneer" plum cultivar on two different rootstocks 1-Effect of different rootstock and grafting technique on "Pioneer" plum cultivar seedlings

Document Type : Original Article

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Horticultural Research Institute Agricultural Research Center

Abstract

The present investigation has been conducted during the two seasons of 2018-2019 in the experimental farm of El-Qanater Horticultural Research station, Kalubeia governorate, Egypt, on one years old seedling of "Pioneer" plum budded on Nemaguard with shield budding, Mariana with shield budding, Nemaguard with cleft grafting, Mariana with cleft grafting to study the effect of different method of grafting and reciprocal relationship between rootstock and sections and their effect on vegetative growth, flowering on Pioneer cultivar to select the best rootstock suitable for grafting. Results indicated that pioneer grafting on Nemaguard by shield budding had effectively on scion diameter, shoot and leaves numbers and leaf area compared with other treatments. Although, pioneer grafting on Mariana rootstock by shield budding had effectively on stock and scion diameter, leaves number and leaf area compared with cleft in the both seasons. Moreover, Mariana rootstock had effectively on Shoot length in both seasons and on shoot diameter in the second season compared to Nemaguard rootstock. This study observed that, teething in pioneer leaf on Mariana rootstock is fine saw and the leaf neck with red in shield budding grafting. Nemaguard stock by shield budding was effectively on nutritional status of grafting zone compared to Mariana stock except Cu. Anatomical study by longitudinal section in the grafting union of the plum plants without any incompatibility symptoms. Rerated to the previous study we recommended that grafting by shield budding between pioneer cultivar on Nemaguard rootstock gave the best result.

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