DIVERSITY OF RESISTANCE TO MONILINIA LAXA AND SPRING FROST OF SOUR CHERRY GERMPLASM

D. Gelvonauskienė, B. Frercks, I. Stepulaitiene, V. Stanys
Sour cherry (Prunus cerasus L.) is one of the most widely grown stone fruits in Lithuania. Blossom blight (Monilinia laxa (Aderhold et Ruhand) Honey) and spring frost are the major factors influencing yield of sour cherry. Sour cherry accessions from different origins were investigated in the genetic resources collection of the Institute of Horticulture, LRCAF during 2001-2011. It was established that blossom blight injured all investigated accessions of sour cherry, although cultivar resistance to blossom blight and dynamics of infection were different, for example the cultivars ‘Vielein’, ‘Vietine rugscioji’, ‘Griot maskovskyj’ and No. 1974-79 are very resistant to blossom blight. Sour cherry flower buds at the first white stage are the most sensitive to spring frosts. Flowers and fruit ovaries of ‘Note’, ‘Sirpotreb ciornaya’, ‘Biruliovskaya’ and ‘Maliga emplore’ were the most resistant to frosts. A medium negative correlation exists between flower damage caused by frosts and resistance to blossom blight. These accessions can be introduced into the sour cherry breeding programme as donors of resistance to blossom blight, sources of resistance to frosts or as donors of both, as is the case for ‘Rovesnica’ which is tolerant to blossom blight and frosts, and consequently it can become an important cultivar for breeding and ecological farming.
Gelvonauskienė, D., Frercks, B., Stepulaitiene, I. and Stanys, V. (2013). DIVERSITY OF RESISTANCE TO MONILINIA LAXA AND SPRING FROST OF SOUR CHERRY GERMPLASM . Acta Hortic. 976, 537-542
DOI: 10.17660/ActaHortic.2013.976.76
https://doi.org/10.17660/ActaHortic.2013.976.76
blossom blight, sensitivity, injury, flower buds
English

Acta Horticulturae