Rice Genomics and Genetics 2025, Vol.16, No.4, 180-198 http://cropscipublisher.com/index.php/rgg 182 By combining the display and screening of the small area with the demonstration and promotion of the large area, it is ensured that the characteristics of many new varieties can be compared, and the selected varieties can be verified on a large scale, so as to play the demonstration and driving role of new varieties. Figure 1 Planting base 2.3 Brief description of selected variety characteristics The main new rice varieties displayed in the demonstration base have their own characteristics (Figure 2). "Yongyou 33" (indica-japonica hybrid rice) is a late japonica hybrid rice bred by Ningbo Seed Industry. It has a plant height of about 130 cm, medium to high, moderate plant shape, and medium to strong tillering ability. The sword leaves are straight, the leaf color is medium green, the panicle is large, the grains are dense, and the fruiting rate is high. The grains are round and the rice has excellent appearance quality. It matures in a medium to early period, and has outstanding high temperature resistance. It can still maintain high yield and high-quality rice quality under continuous high temperature conditions. The lodging resistance is stronger than other varieties in the same series, and no lodging is seen in the field. However, it is susceptible to rice planthoppers and borers, and pest control needs to be strengthened. "Yongyou 33" is a high-yield and stable variety with great potential for yield increase. It has been widely demonstrated and applied in Zhejiang and other places. Figure 2 Rice grown at the planting base "Jiangliangyou 7901" (indica-japonica hybrid rice) is the first international two-line indica japonica hybrid rice variety, jointly developed by Zhejiang University, Zhejiang Jiaxing Agricultural Science Research Institute and
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