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S1 Fig. Growth stage-specific low temperature response associated with physiological and morphological impairment during seedling to flowering stage in rice. S2 Fig. Seeding of pregerminated seeds in seedling trays for cold screening at the seedling stage. S3 Fig. Seedlings at three-leaf stage prepared for placing in the cold water tank for artificial cold screening at the seedling stage. S4 Fig. Seedlings in the cold water tank adjusted at 13℃ for artificial cold screening at the seedling stage. S5 Fig. Temperature profile of batch 1, 2 and 3 in cold water tank. S6 Fig. (A) Onset of cold stress symptoms in seedlings; (B) Seedlings at the scoring stage (8th day), when the susceptible check died. S7 Fig. (A) Leaf discoloration (LD) scoring based on SES score, (B) Cold water treated trays after 7 days of cold stress. S8 Fig. Dot plot showing flowering window of the diverse panel under A) early sown cold stress plot (CS) and B) regular Boro season (NS) plot in field. S9 Fig. Maximum and minimum temperature of field conditions under A) cold stress, B) Non stress conditions. S10 Fig. Temperature profile of air and water in artificial cold screening facilities (CSF) of A) cold stress, and B) ambient air temperature. S11 Fig. Cold treated plants at PI to booting stage in phytotron for reproductive stage cold screening. S12 Fig. Tiller which was at meiotic stage was labeled and treated under cold stress condition. S13 Fig. Dendrogram showing the hierarchical clustering of rice genotypes based on phenotypic traits under (A) field and (B) phytotron conditions with cold stress at the reproductive stage. S1 Table. Phenotypic performance in term of LD score and survival rate (%) of 38 rice genotypes after cold stress (13°C) at seedling stage. S2 Table. Cluster mean of different cold traits in the clusters formed at different cold levels using Euclidian distance matrix. S3 Table. Ranking of diverse rice germplasm for their relative cold related traits at reproductive stage in a cluster analysis using Euclidian distance matrix. (RAR)