The main objective of this breeding program is to develop high yielding, disease resistance and good processing potato cultivar. Gui Valley is a clonal selection resulting from a cross between ND2471-8 and Cona . It has medium plant height and light green foliage. Gui Valley has medium flowering habit and light pink flowers. Gui Valley is a medium maturing potato cultivar and tubers are smooth, yellow skin, light yellow flesh, long-oval tuber shape, distinct red eyes with medium depth and medium dormancy. It has high level of tuber uniformity and good keeping quality. Gui Valley demonstrates resistance to potato virus Y (PVY), soft rot, but moderately susceptible to late blight and common scab. It is also resistant to most of the internal and external physiological disorders particularly dehiscence, hollow heart and internal brown spot. The specific gravity of Gui Valley is significantly higher (1.097) than that of Shepody (1.078). Gui Valley has suitable for processing mainly French fries and chips. This cultivar has high level of tuber uniformity and capable of yielding 37.6 t·ha^-1, which is 18.2% higher than the control potato cultivar Shepody under optimum agronomical practices.
INTRODUCTION
MATERIAL AND METHODS
RESULT AND DISCUSSION
LITERATURE CITED