CHARACTERISING THE DIVERSITY OF RICE LANDRACES FOR EFFECTIVE CROP MANAGEMENT AT A REGIONAL SCALE WITH FARMERS’ PARTICIPATION

Bhagya Laxmi ¹, Uday K. Nagubandi ² and N. Sivaraj*³

^1,2 Program Officer, Watershed Support Services and Activities Network (WASSAN), Hyderabad 500 068 Telangana and ³ Principal Scientist, ICAR- National Bureau of Plant Genetic Resources, Regional Station, Hyderabad 500 030

Received-07.11.2022, Revised-18.11.2022, Accepted-29.11.2022

Abstract:  Two hundred and two accessions of traditional landraces/varieties augmented from Andhra Pradesh, Odisha, Karnataka and Tamil Nadu states were characterized for 12 qualitative and 7 quantitative traits under natural farming/organic farming environment through a NGO network. The study revealed high degree of variation in agro-morphological traits of rice landraces with a Shannon diversity index ranging from 0.0136 to 0.5080.  The coefficient of variation was more than 10% for majority of the quantitative traits studied, highest being total number of tillers (38.2%) followed by panicle length (22.8%). Promising accessions suiting to organic/natural farming ecosystems, effective crop management at regional level and donors for various economic traits that would fit into a sustainable cropping system model are discussed.

Keywords: Rice, landrace, characterization, germplasm, organic farming, natural farming

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