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Physiological and metabolic indices for heat tolerance in maize

 

   

 

 

Short duration and drought tolerant varieties in Western & Central India

The frequency and intensity of high night temperatures is increasing under changing climatic conditions. Day temperatures in their optimal limits help the photosynthesis process in the presence of sunlight while higher night temperatures (HNT) support respiration which is the reverse process of the photosynthesis.


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Productivity of rainfed maize under enhanced carbon dioxide and its interaction with water deficit and elevated temperature

Maize hybrid DHM-117 was sown in Free Air Temperature Elevation (FATE) facility to assess the impact of high temperature on phenology, growth and yield. The FATE facility consisted of three 8 m diameter rings fitted with 24 arrays of ceramic infrared heaters of 2000 W capacity to elevate the canopy temperature by 3°C ± 0.5°C above the ambient canopy temperature (ET) and three FATE rings without any heating system as ambient (AT) control.

 

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Short duration, drought tolerant crop varieties were demonstrated for delayed sowing and deficit rainfall conditions to improve the resilience of farming in the drought prone areas. Farmers adopted short duration varieties when faced with delayed onset of monsoon.


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Short duration and drought tolerant varieties in Southern India

S. Raghuttahalli village of Chikkballpur district, short duration and early maturing finger millet variety ML-365 against GPU-28 in seven farmers’ fields were demonstrated. ML-65 variety gave yield 21.78 q/ha as compared to 15.65 q/ha by GPU-28. Further, it was found to be resistant to blast and ideal for both rainfed and irrigated conditions.


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