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Evaluation of Apple Chlorotic Leaf Spot Virus Impact on Fruit Yield and Vegetative Growth in Apple Cultivars ‘Antonovka’ and ‘Gita’ Cover

Evaluation of Apple Chlorotic Leaf Spot Virus Impact on Fruit Yield and Vegetative Growth in Apple Cultivars ‘Antonovka’ and ‘Gita’

Open Access
|Oct 2022

Abstract

The negative influence of pathogens on plant development is well known. However, the negative impact depends on various factors: cultivar and rootstock resistance, nutrition, the environment, the virulence, and concentration of pathogens in the plant tissue. The evaluation of apple chlorotic leaf spot virus (ACLSV) influence on apple tree growth and production was performed at Institute of Horticulture (LatHort) from 2012 to 2020. Virus-free and ACLSV-infected trees from the traditional cultivar ‘Antonovka’ and new scab resistant cultivar ‘Gita’ were evaluated on dwarfing rootstock B.396. The presence of four common apple viruses (apple mosaic virus (ApMV), ACLSV, apple stem grooving virus (ASGV), apple stem pitting virus (ASPV)) was assayed in the planting year and repeated at the end of the study period. The vigour of planting material, growth, yield, and yield efficiency were compared between virus negative and ACLSV-infected trees. During eight growing seasons (2013–2020), no statistically significant negative impact of ACLSV infection on tree growth or yield was observed for the cultivars. A larger canopy volume was observed for ACLSV-infected trees (p = 0.01), but the cumulative yield per canopy volume was equivalent between virus-negative trees and ACLSV-infected trees (p = 0.07).

DOI: https://doi.org/10.2478/prolas-2022-0076 | Journal eISSN: 2255-890X | Journal ISSN: 1407-009X
Language: English
Page range: 495 - 499
Submitted on: Aug 26, 2021
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Accepted on: Jul 15, 2022
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Published on: Oct 14, 2022
In partnership with: Paradigm Publishing Services
Publication frequency: 6 issues per year

© 2022 Neda Zuļģe, Edgars Rubauskis, Imants Missa, Daina Reveliòa, Indra Borisova, published by Latvian Academy of Sciences
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.