Effects of the seedling tray overlapping for seed emergence mode on emergence characteristics and growth of rice seedlings
文献类型: 外文期刊
第一作者: Gao, Yizhuo
作者: Gao, Yizhuo;Zhang, Yuping;Zhang, Yikai;Wang, Yaliang;Wang, Zhigang;Zhu, Defeng;Xiang, Jing;Chen, Huizhe;Gao, Yizhuo;Zhang, Yunbo;Shao, Meihong
作者机构: China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou, Peoples R China;Yangtze Univ, Coll Agr, MARA Key Lab Sustainable Crop Prod Middle Reaches, Jingzhou, Peoples R China;Jiande Agr Tech Extens Ctr, Hangzhou, Peoples R China
关键词: rice; seedling raising mode; seed plumpness; seedling emergence characteristics; seedling quality; nutrient uptake
期刊名称:FRONTIERS IN PLANT SCIENCE ( 2022影响因子:5.6; 五年影响因子:6.8 )
ISSN: 1664-462X
年卷期: 2024 年 15 卷
收录情况: SCI
摘要: Seedling mode plays a crucial role in the rice production process, as it significantly affects the growth and development of seedlings. Among the various seedling modes, the seedling tray overlapping for seed emergence mode (STOSE mode) has been demonstrated to be effective in enhancing seedling quality. However, the impact of this mode on the germination and growth of seeds with varying plumpness remains uncertain. To investigate the effect of the STOSE mode on seedling emergence characteristics, growth uniformity, and nutrient uptake of seeds with varying plumpness levels, we conducted a study using super early rice Zhongzao 39 (ZZ39) as the test material. The seeds were categorized into three groups: plumped, mixed, and unplumped. The results indicated that the STOSE mode significantly improved the seedling rate for all types of seeds in comparison to the seedling tray nonoverlapping for seed emergence mode (TSR mode). Notably, the unplumped seeds exhibited the most pronounced enhancement effect. The soluble sugar content of the seeds increased significantly after 2 days of sowing under the STOSE mode, whereas the starch content exhibited a significant decrease. Furthermore, the STOSE mode outperformed the TSR mode in several aspects including seedling growth uniformity, aboveground dry matter mass, root traits, and nutrient uptake. Overall, the STOSE mode not only promoted the germination and growth of plumped and mixed seeds but also had a more pronounced impact on unplumped seeds.
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