Articles
TESTING FIVE RASPBERRY CULTIVARS OF ESTONIAN ORIGIN
Article number
777_22
Pages
161 – 166
Language
English
Abstract
Insufficient winter hardiness is the most essential factor reducing the raspberry yield in Estonia.
The introduced cultivars from other regions often are not sufficiently winter hardy.
The main task of our raspberry breeding programme in Estonia is to breed cultivars which are winter hardy enough.
The breeding programme of raspberry cultivars at Polli is based on traditional breeding methods and has resulted in six cultivars (Aita, Alvi, Helkal, Tomo, Espe and Siveli), from which the newest two, Aita and Alvi, were released and registered in 2003. Aita pedigree contains the cultivars Superlative, Novost Kuzmina and Glen Clova. Alvi pedigree contains Golden Queen, Spirina Belaya and also Novost Kuzmina.
The purpose of this investigation was to compare Aita and Alvi with the other three Estonian cultivars (Helkal, Tomo and Espe) and with Novokitaivska (originated in the Ukraine), which is the most widely cultivated red raspberry cultivar in Estonia during the last two decades.
In this study we observed phenology, winter hardiness, resistance to anthracnose (Elsinoe veneta) and spur blight (Didymella applanata), and fruit quality characteristics.
The cultivar evaluation experiments with six cultivars revealed that Alvi, Helkal, and Novokitaivska had good winter hardiness in the years 20032005. Novokitaivska and Tomo had the best yield.
Aita (3.1 g), Helkal (2.9 g), and Alvi (2.8 g) had the biggest fruit. Helkal and Tomo had the highest total sugar content and Tomo also had the highest acidity.
Ascorbic acid content was highest in Alvi (34 mg/100g fresh fruit).
The newest cultivars Aita and Alvi are promising due to big fruits, reliable yield, and resistance to anthracnose.
However, susceptibility to spur blight is a shortcoming of the cultivars.
The introduced cultivars from other regions often are not sufficiently winter hardy.
The main task of our raspberry breeding programme in Estonia is to breed cultivars which are winter hardy enough.
The breeding programme of raspberry cultivars at Polli is based on traditional breeding methods and has resulted in six cultivars (Aita, Alvi, Helkal, Tomo, Espe and Siveli), from which the newest two, Aita and Alvi, were released and registered in 2003. Aita pedigree contains the cultivars Superlative, Novost Kuzmina and Glen Clova. Alvi pedigree contains Golden Queen, Spirina Belaya and also Novost Kuzmina.
The purpose of this investigation was to compare Aita and Alvi with the other three Estonian cultivars (Helkal, Tomo and Espe) and with Novokitaivska (originated in the Ukraine), which is the most widely cultivated red raspberry cultivar in Estonia during the last two decades.
In this study we observed phenology, winter hardiness, resistance to anthracnose (Elsinoe veneta) and spur blight (Didymella applanata), and fruit quality characteristics.
The cultivar evaluation experiments with six cultivars revealed that Alvi, Helkal, and Novokitaivska had good winter hardiness in the years 20032005. Novokitaivska and Tomo had the best yield.
Aita (3.1 g), Helkal (2.9 g), and Alvi (2.8 g) had the biggest fruit. Helkal and Tomo had the highest total sugar content and Tomo also had the highest acidity.
Ascorbic acid content was highest in Alvi (34 mg/100g fresh fruit).
The newest cultivars Aita and Alvi are promising due to big fruits, reliable yield, and resistance to anthracnose.
However, susceptibility to spur blight is a shortcoming of the cultivars.
Publication
Authors
L. Arus, A. Kikas, A. Libek, H. Kaldmäe
Keywords
cultivars, winter hardiness, yield, fruit quality, diseases, raspberry
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