Variation for Photoperiod and Temperature Sensitivity in the Global Mini Core Collection of Sorghum

Information on photoperiod and temperature sensitivity of sorghum germplasm is important to identify appropriate sources for developing cultivars with a broad adaptation. The mini core collection consisting 242 accessions along three control were evaluated days 50% flowering (DFL) plant height in two long-day rainy short-day post-rainy seasons, grain yield 100-seed weight the seasons. Differences DFL cumulative growing degree (CGDD) seasons used classify sensitivity. Results revealed 18 landraces as insensitive (PTINS), 205 sensitive (PSTINS), 19 temperature-sensitive (PTS) sources. PTS 80 PSTINS took less than season indicating their adaptation possible different mechanism that trigger sorghums. In all groups, several desirable combinations agronomic traits identified use breeding programs develop climate-resilient genomic studies genes responsible responses.