Molecular Plant Breeding 2025, Vol.16, No.4, 250-260 http://genbreedpublisher.com/index.php/mpb 250 Review and Progress Open Access Comparative Study on Yield and Quality Adaptability of Japonica Rice Varieties under Various Transplanting Methods Shaomin Yang, Xingzhu Feng, Zhen Li Hainan Institute of Biotechnology, Haikou, 570206, Hainan, China Corresponding email: zhen.li@hibio.org Molecular Plant Breeding, 2025, Vol.16, No.4 doi: 10.5376/mpb.2025.16.0025 Received: 19 Jul., 2025 Accepted: 21 Aug., 2025 Published: 31 Aug., 2025 Copyright © 2025 Yang et al., This is an open access article published under the terms of the creative commons attribution license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Preferred citation for this article: Yang S.M., Feng X.Z., and Li Z., Comparative study on yield and quality adaptability of japonica rice varieties under various transplanting methods, Molecular Plant Breeding, 16(4): 250-260 (doi: 10.5376/mpb.2025.16.0025) Abstract This study mainly discussed the yield and quality performance of japonica rice under different transplanting methods, compared several common cultivation methods, such as mechanical pot seedling transplanting, blanket seedling transplanting, mechanical direct seeding and manual transplanting, to see their effects on the growth, yield structure and quality of rice, analyzed which method is more stable, and also studied how japonica rice varieties respond under different planting conditions. Such as the changes in some agronomic traits and the patterns of quality formation, special attention was also paid to the interaction between varieties and the environment to see how much of a role this interaction plays when choosing transplanting methods. This study hopes to provide some ideas for the cultivation methods of high-yield and high-quality japonica rice in the future, and also offer references for promoting appropriate cultivation methods in different regions. Keywords Japonica rice; Transplanting methods; Varietal adaptability; Yield and quality; Genotype ×Environment interaction 1 Introduction Japonica rice (Oryza sativa L. ssp. japonica) is a very important food crop in the world. It plays a particularly important role in ensuring that people have enough to eat. Because it has a good taste and is relatively disease-resistant and stress-resistant, in countries like China, Japan and South Korea, the most widely grown type is japonica rice. Nowadays, with the increasing population and unstable climate, people are paying more and more attention to how to increase the yield and quality of japonica rice and make it more adaptable to the environment (Chen et al., 2025a; Zhang et al., 2025). There are many ways to grow rice, such as manual transplanting, mechanical transplanting, direct seeding, carpet seedling transplanting and pot seedling transplanting, etc. In recent years, mechanical transplanting and mixed sowing techniques have been increasingly used. They are more labor-saving and can also improve the quality of seedlings (Deng et al., 2023). Different planting methods have a significant impact on the growth, yield and quality of rice. Mechanical transplanting can shorten the growth period of rice and better utilize light and heat, while mixed sowing is conducive to stronger seedling growth and easier survival after planting (Gao et al., 2023; Zhang et al., 2025). “Adaptability” refers to whether a type of rice can perform well in different environments, such as whether the yield is stable and the quality remains unchanged. If a variety can not only achieve high yield but also withstand cold, heat, pests and diseases, then its adaptability is very strong (Farooq et al., 2021; Chen et al., 2025a; Wang et al., 2025). The performance of a variety is not only influenced by its own genes, but also closely related to where and how it is grown. This interaction of “variety × environment × management”, that is, G×E, is the key to determining adaptability. Understanding adaptability is helpful for breeding and selection of planting areas. This study compared the yield and quality changes of japonica rice varieties under different transplanting methods and explored how varieties and planting methods influence each other. This study aims to provide a theoretical basis and practical reference for high-yield and high-quality planting plans and variety breeding of japonica rice.
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