SCION/ROOTSTOCK INFLUENCE ON GRAFTING SUCCESS, EARLY PERFORMANCE, TREE SURVIVAL AND EFFICIENCY OF NUTRIENT UPTAKE OF SOME ASIAN PEAR (PYRUS SEROTINA REHD.) CULTIVARS

This experiment was conducted in order to evaluate performance of some Asian (Japanese) pear cultivars (Pyrus serotina Rehd.) on European pear (Pyrus communis L.) seedling rootstock under Tehran environmental conditions during 2000 and 2001 growing seasons.
The experiment was started in 2000 with budding of nine Asian pear cultivars named ‘KS’₆, ‘KS’₇, ‘KS’₈, ‘KS’₉, ‘KS’₁₀, ‘KS’₁₁, ‘KS’₁₂, ‘KS’₁₃, ‘KS’₁₄ and the local ‘Shahmiveh’ (‘Sh’) cultivar (European pear) on European pear seedling rootstocks.
The performance of budded trees was evaluated with some growth and physiological measurements during two complete growing seasons (2000 and 2001) at the Department of Horticultural Science, Tarbiat Modarres University (TMU), Tehran, Iran.
Results showed more than 80% grafting success in the first season.
Microscopic examination in the grafting site of all cultivars 2 to 4 weeks after budding showed a good callus formation.
In the second season after budding 10% of grafted trees failed to grow, but differences between cultivars were not statistically significant.
There were significant differences between cultivars in leaf mineral concentrations such as N, P and K. The highest N, P and K were observed in ‘KS’₉, ‘KS’₁₂ and ‘KS’₆ respectively, and the lowest concentrations in ‘Sh’, ‘KS’₆ and ‘Sh’ respectively.

IX International Pear Symposium

K. Arzani, H. Khoshghalb, G. Karimzadeh

Asian pear, European pear, rootstock, propagation, tree survival, nutrient uptake, growth, compatibility

https://doi.org/10.17660/ActaHortic.2005.671.67