摘要：Documenting qualitative and quantitative characteristics of landraces is important for maintaining genetic diversity. Sweet corn landraces are grown in Khyber Pakhtunkhwa, Pakistan for their consumption in local markets. A study was commenced to document characteristics of sweet corn under different planting conditions. Four landraces along with an approved corn variety were planted on five dates at almost one month interval at New Developmental Farm (NDF) of University of Agriculture Peshawar, Pakistan. Randomized complete block (RCB) design with split plots was used. Planting dates and landraces significantly affected physical properties of cobs and kernels. Sweet corn attained maximum cob diameter, kernel length, kernel width, kernel rows cob~(-1) and number of kernels row~(-1) when planted in July during both years. Landrace Swabi recorded maximum cob diameter, kernel length, kernel width, kernel rows cob~(-1) and number of kernels row~(-1) in both years. Further studies to reveal the underlying reasons for genotypic variations and their interaction with environmental conditions are imperative.
