Vol. 10, Issue 2 (2021)

Author(s):
Vinay P Singh, JP Srivastava, Ruchi Bansal and Dhirendra K Singh

Abstract:
Ten genotypes of pigeonpea were investigated for their response to short term root zone waterlogging stress imposed at an early stage of growth. Waterlogging caused significant reduction in plant dry weight. Number of leaf-lets/plant, leaf area/plant, photosynthetic rate and chlorophyll content decreased under the influence of waterlogging. Genotype ICPL-84023 and PTH-1 were recorded lesser reduction in plant dry weight, maintained higher leaf area and photosynthetic rate among the studied genotypes. The reduction in all the observed parameters was higher in genotype MAL-18. It is observed that the product of leaf area/plant × photosynthetic rate is a better parameter to identify waterlogging resistant genotypes in pigeonpea instead of reduction in leaflet number/plant, leaf area/plant or photosynthetic rate individually.