ⅡYou 1577(Authorized No.:Chuan authorized rice2002018) Hybridized with Ⅱ—32A and Yihui 1577 by Yibin Agriculture Rice Research Institute. Examined and approved by Sichuan Breed Committee in May,2002. Became the main spread product in 2003. Produced and marketed by the CNSGC-Mainyang Rice Seed Industry Co.,Ltd only