Researchers studied 23 types of rice to understand their genetic differences and how they relate to yield. They found that some varieties, like BPT-3291, had higher grain yield than others. Traits like number of spikelets per panicle and tillers per hill showed the most variability. Plant height, tillers per hill, and panicles per hill were positively correlated with grain yield. Traits like biological yield and harvest index had a direct impact on grain yield. This information can help breeders choose the best traits to improve rice productivity.