<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Step-wise selection for early canopy traits followed by stress tolerance indices as an approach for improving\r\ndrought tolerance in groundnut (Arachis hypogaea L.)"^^ . "Rationale:\r\nDrought stress at the pod filling stage of groundnut is a major yield constraint in the semi-arid tropics of Africa and\r\nAsia.\r\nMethods:\r\nA population of 600 MAGIC lines (MLs) (F8/9generation) is studied in Leasyscan, a high throughput phenotyping\r\nplatform (HTPP) that assessed canopy growth up to 45 days after planting (DAP), and under managed stress\r\nenvironment that uses drip lines for application of uniform and measured quantity of water in well-watered (WW)\r\nand water-stress (WS) plots. Intermittent drought was imposed from 60 DAP coinciding with pod-filling stage, and\r\ntime domain reflectometry (TDR) probes measured soil moisture.\r\nResults:\r\nDuring 2018-19, the Mean Score Index (MSI) of Productivity and Resilience indices selected 20 MLs (MSI=9-10)\r\nat par with the checks, ICGV 02266 (MSI=9.4) and ICGV 03043 (MSI=9.2). About 50% of the MLs (320) recorded a\r\nLeaf Area Index (LAI) of <0.30 from which 12 MLs recorded high MSI. From 122 MLs that recorded superior digital\r\nbiomass (11173 to 11297 m3) at 45 DAP than the drought tolerant check ICGV 02266 (10245 m3), eight MLs recorded\r\nhigh MSI. Extreme water stress of 100 mm imposed at pod filling stage in 2021-22 resulted in a yield reduction of\r\n>70% in 402 MLs, however, 29 MLs with <20% yield reduction were selected.\r\nConclusions & Perspectives:\r\nEarly generation selection using HTPP (LeasyScan) for early canopy traits followed by stress index-based selections\r\nin managed stress environment is proposed for drought tolerance breeding in groundnut. The MAGIC population is\r\na valuable source for improving drought tolerance."^^ . "2022-12-02" . . . . . . . . . . . . . . "P"^^ . "Ashutosh"^^ . "P Ashutosh"^^ . . "W"^^ . "Ankush"^^ . "W Ankush"^^ . . "P"^^ . "Janila"^^ . "P Janila"^^ . . . . "The 7th Congress on Plant Production In Water - Limited Environment"^^ . . . . . "King Fahd Hotel, Dakar, Senegal"^^ . . . . . . "Step-wise selection for early canopy traits followed by stress tolerance indices as an approach for improving\r\ndrought tolerance in groundnut (Arachis hypogaea L.) (PDF)"^^ . . . "7151_with cover.pdf"^^ . . "HTML Summary of #12044 \n\nStep-wise selection for early canopy traits followed by stress tolerance indices as an approach for improving \ndrought tolerance in groundnut (Arachis hypogaea L.)\n\n" . "text/html" . . . "Groundnut"@en . .