The study looked at 30 different types of rice to see how different traits affect grain yield. They found that traits like biological yield, harvest index, days to first flowering, panicle length, grains per panicle, and 1000 grain weight are all important for increasing grain yield in rice. Specifically, biological yield and harvest index have a big direct impact on grain yield. This means that focusing on these traits can help improve rice yield during the <italic>boro</italic> season.