Abstract
A study has been undertaken on the growth, development, and yield potentials of 15 pearl millet cultivars showing a large genetic variability in growth parameters in different sowing environments. Sowing date had a significant effect on growth stages (GS1, GS2, GS3), thermal units accumulated in respective growth stages, days to flowering, and yield components of the pearl millet cultivars. Significant genotype x sowing date interactions were also observed for the majority of the variables mentioned. A decline in both temperature and length of photoperiod over successive sowing dates from July to September had a drastic effect on phenology and yield potentials of the pearl millet cultivars. Higher grain yield in the July sowing experiment, compared to those for other sowing dates, could be related to a longer photoperiod (> 13 h), higher temperatures, and a significant difference between day and night temperatures.
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