Abstract
Background: Potato is a starchy and tuberous crop from the perennial Solanum tuberosum of
the Solanaceae family. The annually consumed diet of an average global citizen in the first
decade of the 21st century included about 33 kg (73 lbs) of potato. Potato has become an
important strategic vegetable crop of Pakistan. Therefore, potato health management has
assumed new proportions which require continuous monitoring and mapping of the disease
problems in the country.
Methodology: In this study thirty genotypes of potato were evaluated for resistance/tolerance
against foliar and tuber diseases. The trial was conducted in accordance with randomized
complete block design (RCBD) with three replications and the results were statistically
analyzed. Different normal agronomic and plant protection measures were carried out in the
crop. Data regarding disease incidence was recorded.
Results: Results indicated soil and seed borne diseases are most widespread and are likely to
become major threat to potato production in Pakistan. Among these stem canker (Rhizoctonia
solani) and black scurf, fusarium wilt and common scab (Streptomyces scabies) are major
diseases and present in almost all production zones. Among viral diseases, potato leaf roll
virus (PLRV) was the major disease. Mop top virus has been also found on some genotypes.
Significant correlation was reported among emergence percentage, potato leaf roll virus, early
blight of potato, black leg, potato virus Y (PVY), fusarium wilt, rhizocotonia and potato
yield.
Conclusion: It was found that emergence percentage was significantly correlated with PLRV,
PVY, fusarium wilt, rhizocotonia and potato yield while negative and significant correlation
was reported for black leg and cracking. The significant correlations indicated that emergence
was greatly affected by attack of different pathogens and potato yield also decreased due to
loss of emergence.
Sher Muhammad, Muhammad Shahbaz, Muhammad Iqbal, Arfan Sarwar Wahla, Qurban Ali, Muhammad Tasdiq Hussain Shahid, Muhammad Shafiq Tariq. (2013) Prevalence of different foliar and tuber diseases on different varieties of potato, Advancements in Life Sciences, Volume 1 , Issue 1.
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