| Comprehensive evaluation of drought resistance of Tartary buckwheat (Fagopyrum tataricum) germplasm resources at germination stage |
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| DOI：10.7606/j.issn.1000-7601.2024.03.02 |
| Key Words: Tartary buckwheat germplasm PEG stress germination period drought resistance evaluation |
| Author Name | Affiliation | | ZHAO Shaodi | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China
College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi 030801, China | | HU Chuanwei | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China
College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi 030801, China | | ZHANG Yulian | Institute of Economic Crops, Shanxi Agricultural University, Taiyuan, Shanxi 030031, China | | LV Na | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China
College of Agriculture, Shanxi Agricultural University, Jinzhong, Shanxi 030801, China | | CAO Liping | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China | | MA Mingchuan | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China | | LIU Zhang | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China | | LIU Longlong | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China | | ZHANG Lijun | Agricultural Gene Resources Research Center of Shanxi Agricultural University, Taiyuan, Shanxi 030031, China |
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| Abstract: |
| 110 Tartary buckwheat germplasm resources were treated with PEG-6000 as an osmotic agent to simulate drought treatment. The germination of Tartary buckwheat seeds under 0, 5%, 10%, 15% and 20% PEG-6000 solution stress were studied. The changes of relative germination potential, relative germination rate, relative germination index, relative radicle length and relative radicle diameter and germination drought tolerance index of seeds were analyzed. The results showed that 15% PEG-6000 was the suitable concentration for the identification of drought tolerance of Tartary buckwheat seeds during germination. The relative germination potential, relative germination rate and relative germination index were determined as the key indexes by principal component analysis. The comprehensive evaluation value D of drought tolerance of Tartary buckwheat germplasm resources at germination stage was obtained by membership function combined with weight analysis. According to the D value, 5 drought\|tolerant types, 28 drought\|tolerant types, 48 intermediate types and 29 sensitive types were screened and identified. 110 Tartary buckwheat germplasm resources were divided into 5 subgroups by cluster analysis. Subgroup I was a subgroup with strong drought tolerance, subgroup II and subgroup III were moderate drought tolerance subgroups, and subgroup IV and subgroup V were typical drought sensitive subgroups. |
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