Abstract
Grape production in Kenya is low and the country imports approximately 4,000 metric tons of wine every year. Three Chinese table grape cultivars (Jingyan, Jingxiangyu and Jingcui) and two Chinese wine grape cultivars (Beihong and Beifeng) as well as three French hybrid wine grape cultivars (Chenin Blanc, Sauvignon Blanc and Cabernet Sauvignon) were evaluated for fruit morphology (berries and bunches) and quality characteristics (Total Soluble Solids, Titratable Acidity, pH and sensory parameters) in 2018/2019 using International Organization for Vine and Wine descriptors and Economic Co-operation and Development procedure for fruit and vegetables respectively. All vines within the row were planted at a spacing of 0.9 and 1.6 m between the rows in a completely randomized design with three vines per replication and four replications for each cultivar. Collected data were subjected to ANOVA. Jingyan and Jingxiangyu had significantly bigger berries and higher bunch weight than all the other cultivars. The TSS of the grapes cultivars ranged from 16.3 to 25.2 °Brix. Beihong and Beifeng had higher TTA levels of 25.7 and 21.2 g/L respectively. Sensory data showed that Jingyan and Jingxiangyu were the most preferred cultivars. All the cultivars had ideal TSS and pH for winemaking and elaboration. Key words: Grapes, cultivar, morphology, quality, greenhouse.
Highlights
Grapes belongs to the genus Vitis and family Vitaceae and they are believed to have originated from the Caucasian and Caspian regions (FAO, 2017)
All the cultivars were conical in shape and their berries were uniform in size
This study revealed that Jingyan, Jingxiangyu, Beifeng, Beihong, Chenin Blanc and Sauvignon Blanc had adapted well to greenhouse conditions in Kenya
Summary
Grapes belongs to the genus Vitis and family Vitaceae and they are believed to have originated from the Caucasian and Caspian regions (FAO, 2017). The genus Vitis is widely used wine and dessert due to their health benefits (Ivanova-Petropulos et al, 2015). Grapes have resveratrol (stilbenes belonging to a non- flavonoid group of phenolic compounds) which has antiviral, anticancer, antiaging, life-prolonging, antiinflammatory and neuroprotective effects (Kundu and Surh, 2008; Stojanović et al, 2001). Grape is a rich source of potassium and fibre which improves cardiovascular health and blood pressure.
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