Assessing impact of thermal units on growth and development of mustard varieties grown under optimum sown conditions

Thermal unit indices have a strong correlation with the phenology, growth and yield of crops can be effectively used to select suitable crop cultivars for specific environmental conditions especially temperature. In this study, four mustard varieties (viz., 'BARI Sharisha-14', Sharisha-15', Sharisha-16' 'Tori-7') were grown in two consecutive growing assess impact thermal on development, variety better under optimum sowing condition. viz., degree-day (GDD), helio-thermal units (HTU), phenothermal index (PTI) heat use efficiency (HUE) estimated from daily temperature sunshine hours. Role GDD different indicators seed (SY) through association dependence traits. Significant variations studied genotypes observed Among varieties, produced higher dry matter yields (1.82 t ha-1) while accumulated maximum at stages. A positive was obtained between had influence attaining phenophases other indicators. Therefore, results suggest that those could prediction; further is expected energy more efficiently increasing which indicated perform global warming scenarios.