Correlation of Agronomic Characters in Potato Accessions Grown Organically

Abstract

Twenty potato accessions grown organically were characterized morphologically. Correlation analysis was done to determine the relationship among agronomic characters and to identify characters associated with marketable yield and harvest index.

Number of secondary stems, haulm weight, canopy cover at 75 DAP, diameter of stem and length of roots had significant positive correlation with marketable yield. Likewise, dry matter content of tubers and leaf area showed significant positive correlation with harvest index. Characters sig-nificantly correlated with marketable yield and harvest index could be used as selection indices for potato accessions grown under organic produc-tion.