| Adaptability analysis of winter rapeseed (Brassica rapa L.) in drought\|cold regions of northern China based on GGE biplot |
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| DOI：10.7606/j.issn.1000-7601.2023.05.02 |
| Key Words: winter rapeseed (Brassica rapa L.) over wintering rate variety adaptability ecological suitable areas GGE biplot drought\|cold regions of northern China |
| Author Name | Affiliation | | SUN Rui | Gansu Research Center of Rapeseed Engineering and Technology, Lanzhou, Gansu 730070, China
School of Life Science, Lanzhou University, Lanzhou, Gansu 730000, China | | YANG Gang | Key Laboratory of Aird Land Crop Science in Gansu Province, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Lanzhou, Gansu 730070, China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Hua | School of Life Science, Lanzhou University, Lanzhou, Gansu 730000, China | | SUN Wancang | Gansu Research Center of Rapeseed Engineering and Technology, Lanzhou, Gansu 730070, China
Key Laboratory of Aird Land Crop Science in Gansu Province, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Lanzhou, Gansu 730070, China
College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| This research mainly evaluated the index of cold resistance including capability, stability and adaptability of winter turnip rape (Brassica rapa L.) in northern China by using GGE Biplot (genotype and genotype by environment interaction) analysis based on the data of over wintering rates of 43 tests in 25 environments of northern China’s 11 Provinces (Autonomous Regions, Cities) within two years continuously. The result showed that cultivar effect was 55.12%, which was 2.5 times of environment effect, cultivar\|environment interaction effect respectively. Therefore, it was concluded that selecting varieties of super cold resistance played the outstanding role in the production of winter rapeseeds (Brassica rapa L.) in drought\|cold regions of northern China. The cold\|resistant capability and adaptability of ‘Longyou 6’ and ‘Longyou 7’ indicated they were the best among 12 winter rapeseeds (Brassica rapa L.) cultivars. GGE double plotting analysis also showed that except Qixian and Tianshui, the other 25 pilot sites had good discrimination of cold resistance of cabbage winter rape varieties, which could be used as a pilot project for cold resistance identification of northern winter rape, with Jingyuan, Linhe and Jingbian as the best pilot sites. However, different sets (ecological regions) had various ecological conditions significantly, so these regions had specific requirements for their special cultivar’s adaptability. ‘Longyou 6’ and ‘Longyou 7’ adapt to all the pilot cultivation tested;‘07 Gaolan DQW-1-3’ and ‘07 Lanzhou MXW-1-3’ are suitable for cultivation in Lhasa, Jiuquan, Dingzhou, Shunyi, Yanbian and other places. ‘06468’ is suitable for cultivation in Tianshui.This study showed that the variety effect played a leading role in the winter rape overwintering rate, but the environmental effect and the interaction between variety and environment also account for a large proportion of the winter rape overwintering rate, so in the northern winter rapeseeds (Brassica rapa L.) production, it was necessary to comprehensively consider the variety, environment and the interaction between variety and environment, and select suitable areas and varieties in different areas according to local conditions in order to ensure safe winter. |
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