| 刊名 | Asian Agricultural Research |
| 作者 | Jing WANG, Baoqiang LI, Lingguo KONG, Qingfeng FAN, Zongjun TAI, Zefeng WANG |
| 作者单位 | Linyi Academy of Agricultural Sciences; Qingyun Town Agricultural Comprehensive Service Center in Linshu County |
| DOI | 10.19601/j.cnki.issn1943-9903.2025.09.007 |
| 年份 | 2025 |
| 刊期 | 9 |
| 页码 | 44-48 |
| 关键词 | Germination stage, Drought resistance, PEG-6000 stress, Membership function method, Comprehensive evaluation |
| 摘要 | [Objective] To identify the drought resistance of main wheat varieties in Shandong Province and screen suitable cultivars for dryland cultivation. [Methods] Employing eight varieties including Jimai 60 as test materials, this study simulated drought stress using 20% PEG-6000 and measured changes in germination-stage indicators. A comprehensive evaluation was conducted using the membership function method, incorporating relative coleoptile length, relative germ length, relative radicle length, relative germination rate, relative germination potential, and stress germination index. [Results] Drought stress not only reduced wheat seed germination rate but also inhibited the growth of the germ, coleoptile, and radicle. The D values of the eight varieties were ranked as follows: Jimai 60 > Linmai 9 > Yannong 999 > Shannong 30 > Shannong 28 > Luyuan 502 > Yannong 1212 > Jimai 22. Based on D values, the eight dominant wheat varieties were classified into three categories: highly drought-resistant varieties (Linmai 9 and Jimai 60), moderately drought-resistant varieties (Yannong 999 and Shannong 30), and sensitive varieties (the others). Linmai 9 and Jimai 60 are recommended as suitable wheat varieties for dryland cultivation in Shandong Province. [Conclusions] Drought stress induced by 20% PEG-6000 reduced germination rate, germination potential, and germination index of wheat varieties while inhibiting the growth of coleoptiles and radicles. These indicators can provide a preliminary assessment of drought resistance in wheat cultivars. However, since filter paper was selected as the growth medium, root length measurement errors were introduced during root washing, leading to variations in final experimental results. Futuer studies could attempt using sterilized sand as an alternative growth medium. |
