Direct seeding rice is one of the main ways of light and simplified cultivation, but the seedling formation process of direct seeding seeds is affected by the germination environment. When rice seeds are submerged for a long time, it will generally lead to difficulties in rice germination, germination, emergence, and seedling leveling, and more seriously lead to rotten seeds, rotten buds, and rotten seedlings, affecting the growth, development, and yield of rice. Different studies have shown that submergence and hypoxia stress have the same effect on the germination and growth of rice. Submergence conditions would cause oxygen deficit in rice seeds, and then promote the seeds to show a unique response. This paper summarized the development status of direct seeding rice, the growth of seedling coleoptile under submergence and the impact of oxygen deficiency on rice root growth, compared and analyzed the advantages and disadvantages of direct seeding rice and traditional rice planting, and discussed the key problems faced by direct seeding rice and the physiological and biochemical activities of roots in the growth process. On this basis, this paper prospects for the development of direct seeding rice in the future, which can provide important reference for the large-scale production of direct seeding rice.
Cite this paper
Su, X. , Zhan, J. , Wang, J. , Li, X. , Wei, Y. , Wu, H. and Dai, H. (2022). Development Status of Direct Seeding Rice and Study on Response Mechanism of Submergence. Open Access Library Journal, 9, e8613. doi: http://dx.doi.org/10.4236/oalib.1108613.
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