Investigation of raspberry cultivars and hybrids in Latvia
2008
Strautina, S., Latvia State Inst. of Fruit-Growing, Dobele (Latvia) | Kampuss, K., Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Agriculture. Inst. of Agrobiotechnology | Krasnova, I., Latvia State Inst. of Fruit-Growing, Dobele (Latvia)
Raspberry in Latvia is the third most important berry crop after strawberry and black currant. The area of raspberry in 2006 was 250 ha. On the other hand, the average yield of raspberry is only 3 t per ha. There are several reasons of low yield: adverse conditions of wintering, poor adaptation and low productivity of cultivars, bad cultivation conditions. To improve the assortment of raspberry cultivars, we investigated 9 cultivars and hybrids from several sources during the years 2003-2007. Yield, average weight of 100 berries and biochemical content of berries were investigated. Big difference of climatic conditions was observed between the years of the investigations. Cultivar ‘Lina’ had the highest yield per bush – 1.2 kg. The highest average weight of 100 berries had cultivars ‘Ina’ – 386 g and ‘Tulameen’ – 352 g. Cultivar ‘Lina’ had the highest content of total phenolics 245 mg/100g. The cultivars ‘Tulameen’, ‘Meeker’, and ‘Schőnemann’ were the least winter-hardy and had low yields.
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