Evaluation of groundnut mini core for resistance to iron deficiency chlorosis under calcareous soils

Abstract

The groundnut mini core set consisting of 184 accessions were evaluated under iron deficient calcareous soil. Genotypes were assessed for iron absorption efficiency related traits like VCR and SCMR at different stages of crop growth and also impact of iron chlorosis on yield and yield components. The maximum severity of iron deficiency chlorosis was recorded at 60 day after sowing coincided with high soil moisture due to receipt of rainfall during the period which made Fe unavailable to the plants. Out of 184 accessions evaluated, five accessions (ICG # 11322, 6888, 9961, 14475 and 4389) were found resistant to calcium induced iron deficiency chlorosis by recording significantly lower VCR and higher SCMR at severe stage (60 DAS) of iron chlorosis expression.