sodininkystė ir daržininkystė 25(4)

a. Fruit trees on rootstock GF8/1 were of the same growth vigour as control ones.
Our observations in most cases are in consistence with the results obtained in other
countries (Hrotkó et al., 1998; Sosna, 2002).
The highest yield and yield efficiency of plum trees in our experiments was on
P. cerasifera seedlings. In most foreign experiments clonal rootstocks improve plum
tree productivity (Grzyb et al., 1998a; Hrotkó et al., 2002), but there are cases when
trees on P. cerasifera seedlings were the most prolific (Grzyb et al., 1998b). Growth
and yield of different scion-rootstock combinations depends on soil and climate
conditions and the results may vary (Sitarek et al., 2004).
The most suckering rootstock was GF655/2. Similar information on it is presented
by the other researches (Kosina et al., 2000; Sosna, 2002). St. Julien A and
GF8/1 practically did not sucker. Trees on P. cerasifera seedlings produced few
suckers, mostly from rootstock stem part, when trees planted to shallow.
According to the data of our experiment none of the tested plum rootstocks
was better than standard P. cerasifera. In recent years scientists from neighbouring
Poland revealed advantages of ‘Wangenheim Prune’ seedling rootstocks. Scion cultivars
on this rootstock often are of superior characteristics in comparison with P.
cerasifera seedlings or clonal rootstocks (Grzyb et al., 1998a; Rozpara, Grzyb, 1998;
Sitarek et al., 2004). In the nearest future ‘Wangenheim Prune’ seedlings should be
introduced into rootstock tests in Lithuania.
Gauta 2006-11-15
Parengta spausdinti 2006-12-11
References
1. Callesen O. Recent developments in cherry rootstock research // Acta Hort. 1998.
Vol. 468. P. 219–228.
2. Cmelik Z., Druzic J., Duralija B., Bencic D. Influence of clonal rootstocks on growth
and cropping of ‘Lapins’ sweet cherry // Acta Hort. 2004. Vol. 658. P. 125–128.
3. Ercisli S., Esitken A., Orhan E., Ozdemir O. Rootstocks used for temperate fruit trees
in Turkey: an overview // Sodininkystë ir darþininkystë. Babtai, 2006. T. 25(3). P. 27–33.
4. Franken-Bembenek S., Gruppe W. Genetic differences in suckering of cherry hybrids
(Prunus x spp.) // Acta Hort. 1985. Vol. 169. P. 263–268.
5. Grzyb Z. S., Sitarek M., Kolodziejczak P. Growth and yield of three plum cultivars
grafted on four rootstocks in piedmont area // Acta Hort. 1998 a. Vol. 478. P. 87–90.
6. Grzyb Z. S., Sitarek M., Kozinski B. Effect of different rootstocks on growth, yield
and fruit quality of four plum cultivars (in centre of Poland) // Acta Hort. 1998b. Vol. 478.
P. 239–242.
7. Hrotkó K., Magyar L., Klenyãn T., Simon G. Effect of rootstocks on growth and
yield efficiency of plum cultivars // Acta Hort. 2002. Vol. 577. P. 105–110.
8. Hrotkó K., Magyar L. Mahaleb rootstocks from the department of fruit science,
Budapest // Acta Hort. 2004. Vol. 658. P. 497–499.
9. Hrotkó K., Magyar L., Simon G. Growth and productivity of sweet cherry interstem
trees // Acta Hort. 1998. Vol. 468. P. 353–362.
10. Kolesnikova A. F., Ossipov Y. V., Kolesnikov A I. New hybrid rootstock for
cherries. Acta Hort. 1985. Vol. 169. P. 159–162.
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