Indian Scientists have identified that high-temperature drought conditions and low soil moisture content are favorable conditions for dry root rot (DRR), a disease that damages the roots or girdles the trunk in chickpea.
This work will be useful for the development of resistant lines and better management strategies.
About Dry root rot disease
- Dry root rot disease causes reduced vigour, dull green leaf colour, poor new growth, and twig dieback.
- If extensive root damage occurs, the leaves suddenly wilt and dry on the tree.
- The increasing global average temperature is leading to appearance of many new plant disease-causing pathogens at a rate hitherto unheard of, one of them being Macrophomina phaseolina, a soil-borne necrotrophic that causes root rot in chickpea.
- Currently, the central and southern states of India have been identified as the prime chickpea DRR hotspots with an overall 5 – 35% disease incidence.
- Macrophomina survives in a wide range of environmental conditions, even at extremes of temperature, soil pH, and moistures.
- In chickpea, DRR is highly prevalent during the flowering and podding stages coinciding with high temperature and drought conditions.
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