Genetic Divergence Studies among Indigenous Accessions of Cassia auriculata (L.) Roxb., through Screening and Utilization for Chambal Ravine Rehabilitation

Abstract

Background: Cassia auriculata, L., is an imperative medicinal and traditional neutral colour leaf hair dye yielding in India. This is a multipurpose and indigenous, perennial leguminous shrub and widely used as traditional medicine to cure diabetics by the rural peoples. Tanner’s cassia is also used as neutral henna and its yields natural golden blonde colouring to hair through the dried leaf powder. Young buds are used for yellow colour dye extraction by textile industries. Screening of high tolerance and best performing genotypes is highly essential in this imperative woody legume shrub to rehabilitate the mass erosion prone gullied and ravine lands for productive purpose of the wasteland and degraded lands. Methods: Thirty different accessions of Cassia auriculata were assembled and numbered from CA-1 to CA-30 from arid and semi-arid regions of Rajasthan (India). The experimental trial was conducted at ICAR-IISWC, Research Centre, Kota-Rajasthan, India during 2019-2022. After evaluation, CA-4 genotype was selected as an elite genotype. The elite genotype was used for high density plantation development with resource conservation for green cover development in non-arable ravine lands. Result: Genetic variation studies of Cassia auriculata indicated that considerable and significant variability, abundant morphometric variations in assembled genotype progenies. Further, genetic divergence analysis was also revealed that nine clusters segregated from 30 genotypes. Thirty genotypes were grouped into nine clusters according overall performance with geographical identity. Finally, C. auriculata (CA-4) genotype was identified and selected as an elite genotype based on its overall superiority in terms of plant growth, higher green biomass, leaf litter biomass, more number branching behaviour and plant coppicing ability which are directly relevant and imperative in soil erosion control, resource conservation and potential rehabilitation effect in resource poor dry regions of non-arable lands.