This doesn't mean all the rice in the world would be one clone. It would be easier and cheaper to produce multiple high-yield/disease resistant hybrids and make them accessible to farmers. They would need different varieties for different regions and markets, anyway.
andyhfell OP t1_j52fd6a wrote
Reply to comment by TequillaShotz in The concentric ring pattern of flowering in sunflowers is controlled by a circadian clock. The pattern enhances visits by pollinators. by andyhfell
Which is also controlled by the circadian clock! https://www.ucdavis.edu/news/sunflowers-move-clock