Effect of the rootstock on the pear planting trees growth and functional state in a nursery
Effect of the rootstock on the pear (Pirus communis L.) planting trees growth and functional state in a nursery / Kryvoshapka V.A., Êhodakivs’ka YU.B. // Sadivnytstvo (Horticulture). – 2017. – 72. – P. 50-57. – Refs.: 21. – in Ukrainian.
The authors researched the cultivar-rootstock interaction effect on the pear planting trees growth and functional state in a nursery. The most intensive growth processes were displayed by the plants of all cvs on a seedling rootstock. Those planting trees concerning the growing energy exceeded those grafted on the quince VA-29 by 9-15%. The chlorophylls sum on the cultivars on the pear seedlings was greater by 27-64% than of those grafted on the quince VA-29. The planting stock quality appeared to depend not only on cvs and rootstock but also on the weather conditions of the year. Under the non-sufficient water supply the seedling rootstock was more efficient as compared to the vegetatively propagated VA-29 and enabled to form high quality branched planting trees of the investigated crop. That accelerated the beginning of the fruit-bearing.
Key words: pear, rootstock, nursery, growth, chlorophyll, functional state.