[Jiang, Yonglei; Jiang, YL; Gu, Kaiyuan] Yunnan Acad Tobacco Agr Sci, Kunming 650021, Peoples R China.
[Gu, Kaiyuan] Southwest Univ, Coll Agron & Biotechnol, Chongqing 400715, Peoples R China.
[Yang, Xiongwei; Yan, Xing] Southwest Forestry Univ, Coll Landscape Architecture & Hort Sci, Kunming 650224, Peoples R China.
[He, Chenggang] Yunnan Agr Univ, Coll Tobacco Sci, Kunming 650201, Peoples R China.
[Mao, Wanchong] Sichuan Management & Monitoring Ctr, Stn Radioact Environm, Chengdu 611139, Peoples R China.