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Increased pollen source area does not always enhance the risk of pollen dispersal and gene flow in Oryza sativa L

文献类型： 外文期刊

作者： Hu, Ning 1 ; Jiang, Xiaodong 2 ; Yuan, Qianhua 3 ; Liu, Wuge 4 ; Yao, Kemin 2 ; Long, Yan 5 ; Pei, Xinwu 5 ;

作者机构： 1.Nanjing Univ Informat Sci & Technol, Yale NUIST Ctr Atmospher Environm, Int Joint Lab Climate & Environm Change, Nanjing 210044, Peoples R China

2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Jiangsu Key Lab Agr Meteorol, Nanjing 210044, Peoples R China

3.Hainan Univ, Coll Trop Agr, Haikou 570228, Hainan, Peoples R China

4.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

5.Chinese Acad Agr Sci, Biotechnol Res Inst, Beijing 100081, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.379； 五年影响因子：5.133 ）

ISSN： 2045-2322

年卷期： 2020 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Pollen dispersal is one of the main ways of gene flow. In the past years, rice pollen dispersal and gene flow have been well studies. However, there is much dispute whether the risk of pollen dispersal and gene flow continuously increases with the source area. A Lagrangian stochastic model was used to simulate the pollen depositions at different distances from different pollen source areas. The field experiments showed a good fit in the pollen depositions. The larger the source area, the more the pollen grains were deposited at each distance, with the pollen dispersal distance increasing accordingly. However, this effect gradually leveled off as the source area increased. In the large-area of pollen source, we found a significantly higher saturation point for the amount of pollen deposition. Once the source area exceeded 1000 x 1000 m(2), the pollen deposition no longer increased, even if the source area continued to increase, indicating the "critical source area" of rice pollen dispersal. However, a 100 x 100 m(2) critical source area for conventional rice and hybrid rice was sufficient, while the critical source area for the sterile line was about 230 x 230 m(2).

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