Genotype X season interaction and stability parameters in black pepper (Piper nigrum L)

Abstract

Genotype x season interaction and stability parameters for five varieties of pepper for yield was studied at the Pepper Research Station, Panniyur, Jjy utilizing the data recorded over five seasons from 1979-80 to 1983-84. The genotype x season interaction was observed to be significant and a larger portion of it was through the non-linear component. The stability model proposed by Eberhart and Russell (1966) was resorted to in describing the stability parameters of varieties. In this study, the variety Kuthiravaly, was found to be the most stable variety. Panniyur 1 is a high yielding variety especially suited to favourable environments, but can also be considered as more stable variety than Arakkulam Munda, Kalluvally and Balankotta.