CHAPTER-2 VARIABILITY AMONG THE ALTERNARIA BRASSICAE ISOLATES INTRODUCTION The chapter is mainly concerned with examining the variability among Alternaria brassicae isolates from the oilseed brassicas. Since, the oilseed brassicas are more prone to the fungal attack and thereby, resulting in reduced productivity of the oilseed. Therefore, the present investigation focuses on the studying the features such as morphological, pathological and molecular variability of Alternaria brassicae. The…