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RESEARCH ON THE BEHAVIOUR OFSOME AUTOCHTHONOUS VEGETATIVE ROOTSTOCKS IN THE NURSERY COMPARATIVE WITH COLT ROOTSROCK, IN INTERACTION WITH DIFFERENT CHERRY CULTIVARS

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Author(s): V.A. Maier | G.Ropan | Gh.Mladin

Journal: Scientific Papers of the Research Institute for Fruit Growing Pitesti, Romania
ISSN 1584-2231

Volume: XXVII;
Start page: 138;
Date: 2011;
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Keywords: nursery | budding – trees | Blumeriella Jaapii | anthocyanins | root system | compatibility

ABSTRACT
During 2007-2010, at the nursery Aiud had been conducted researches with goals to establish the performance of the autochthonous vegetative rootstocks: IP-C4, IP-C5, IP-C6, IP-C7, in grafting combinations with six cherry cultivars: Timpurii de Bistrita, Jubileu 30, Germersdorf, Dalia, Stella and Van, in the nursery phase, compared with colt rootstock. These researches were focused on the following aspects: the ability to rebuild rootstock root system after transplanting in the field, according to the method of vegetative propagation and growth of the budding trees, the compatibility of the budded union, the resistance of the rootstocks to Blumeriella jaapii and the yield of grafted trees. To better highlight certain characteristics in vegetative rootstocks have been made comparisons with generative rootstocks „Semavium” and „VG-1”. Of the recorded data it was found a better establishment to the vegetative rootstocks due to their ability to form adventitious roots and a constant and uniform growth rate until the beginning of October; witch led to a better percent of bud take comparisons with generative rootstocks.Vegetative rootstocks had a better genetic resistance to attack of Blumeriella Jaapii on leaves. It not needed to spray with fungicides for IP-C5 and IP-C7 rootstocks in the first field of nursery. The bud take and growth of the maiden trees were ascertained in the first place by rootstock and the second one by cultivar. The rootstocks types IP-C5 and IP-C7 had good grafting compatibility with all six cultivars studied, which leads to a grafted tree production rate of 73-80% STAS, with distinct and very significant positive differences versus colt rootstock.
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