Vol. 10, Issue 12 (2021)

Author(s):
Deva Ram Meghawal, Mukesh Vyas, Hemlata Sharma, Jagdish Choudhary, RB Dubey, Ashok Kumar Malav and PP Sharma

Abstract:
The present investigation was done on mean performance often genetically dissimilar parents and their 45 F₁’s. The observations were recorded on twenty one characters viz., plant height (cm), flag leaf length (cm), flag leaf width (cm), flag leaf area (cm²), peduncle length (cm), total number of tillers plant^-1, total number of productive tillers plant^-1, spike length (cm), spikelet’s spike^-1, grains spike^-1, spike weight productive tiller^-1 (g), grain weight spike^-1 (g), biological yield plant^-1 (g), economic yield plant^-1 (g), harvest index (%), test weight (g), protein content (%), proline content (µg/100 mg fresh leaf tissue), chlorophyll content estimation (mg/g), chlorophyll stability index, heat injury (%),days to 50% heading, days to maturity, grain filling period and leaf canopy temperature (°C) which were recorded on plot basis. Present investigation concluded that the overall study on physiological and yield traits of the genotypes viz., parents HI-8737, HI-8498, NIDW-295, PDW-274, PDW-233, PDW-314 and PDW-291 and crosses NIDW-295 x PDW-274, HI-8737 x HI-8498, PDW-274 x PDW-291 and PDW-233 x PDW-314 were observed better for maximum number of characters indicating their high tolerance to heat stress under late sowing conditions.