Evaluation of yield and some physiochemical traits in four cultivars of potatoes (Solanum tuberosum L.)

Abstract

The study was carried out to evaluate the physical, chemical, and quality properties of four potato cultivars (Jelly, Donata, Hermes, and Caruso), cultivated in an open field during the spring season of 2022. A completely randomized block design RCBD with three replications was used in this experiment. The obtained results could be summarized as follows: the cultivar of Jelly obtained the maximum values of plant yield 1.025 kg, tuber weight 162.50 g, total yield 34.14 t ha-1, tuber equatorial diameter 57.80 mm, TSS 6.20%, maturity index 13.14, and pH 7.13. While the Donata cultivar gave a higher value of a tuber polar diameter of 94.72 mm, shape index of 1.82 and moisture 81.17%, wherase the Hermes cultivar gave the maximum values of parameters such as dry matter 30.79%, starch 23.44% and protein content in tubers 7.17%. Caruso cultivar recorded the maximum values of the number of tubers 4.67 tuber plant-1, hardness 12.83 kg cm2, total acidity 0.62%, and carotene content 0.64 μg g-1 FW. Amongst the four tested potato cultivars, the Jelly variety revealed the best performance due to it gives high values of plant yield, tuber weight, total yield, tuber equatorial diameter, TSS%, TSS/TA, and pH, content in tubers. While the Hermes variety recorded the highest value in TA%, moisture% and carotenoid content in tubers.