| Identification and comprehensive evaluation of spring rapeseed varieties in Aksu region of Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2024.06.03 |
| Key Words: spring rapeseed variety identification comprehensive evaluation Aksu region of Xinjiang |
| Author Name | Affiliation | | GUO Wenbo | nstitute of Turpan Academy of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan，Xinjiang 838000, China | | LI Haifeng | nstitute of Turpan Academy of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan，Xinjiang 838000, China | | WEN Yunmeng | nstitute of Turpan Academy of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan，Xinjiang 838000, China | | FU Yanbo | Baicheng Agricultural Experimental Station, Xinjiang Academy of Agricultural Sciences, Aksu, Xinjiang 842304, China | | BIAN Qingyong | Baicheng Agricultural Experimental Station, Xinjiang Academy of Agricultural Sciences, Aksu, Xinjiang 842304, China | | LIU Zhigang | nstitute of Turpan Academy of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan，Xinjiang 838000, China | | ZHU Jinquan | Baicheng Agricultural Experimental Station, Xinjiang Academy of Agricultural Sciences, Aksu, Xinjiang 842304, China | | WEI Yanhong | Baicheng Agricultural Experimental Station, Xinjiang Academy of Agricultural Sciences, Aksu, Xinjiang 842304, China | | LIU Guohong | nstitute of Turpan Academy of Agricultural Sciences, Xinjiang Academy of Agricultural Sciences, Turpan，Xinjiang 838000, China |
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| Abstract: |
| Xinjiang oilseed rape currently faces challenges such as mixed varieties and degradation, low yields, low oil content, low quality, and a lack of high\|yielding varieties. It is essential to establish a comprehensive evaluation index system for oilseed rape in Xinjiang to identify high\|yield oilseed rape varieties suitable for cultivation in the region. In this experiment, 67 high\|yielding and high\|resistant spring rapeseed varieties were selected as study materials. Eleven parameters were selected for evaluation based on the identification criteria, including the number of primary branches, the number of secondary branches, the total number of effective branches, plant height, the number of angular fruits in the main sequence, the length of the main sequence, the number of grains per angle, the number of angular fruits per plant, thousand\|grain weight, production and yield, and the lodging rate. Various methods, such as weighted subordinate functions, principal component analysis, correlation analysis, and cluster analysis, were used to conduct a thorough evaluation. The results showed that the yields of the tested varieties ranged from 1 857~5 314.5 kg·hm-2 with a coefficient of variation of 0.151. The total effective branches, plant height, stem thickness, number of angiosperms in the main sequence, number of kernels per angiosperm, number of angiosperms per plant, yield, and collapse rate of spring rape were used as the main traits to measure the comprehensive score of spring rape. Among these factors, the total number of productive branches and the number of grains per spike showed the highest correlation coefficients with the comprehensive evaluation (D value), reaching 0.82 and 0.81 (P<0.01), respectively. The regression equation was constructed using stepwise regression analysis. The estimation accuracy for each variety exceeded 90%, suggesting that the 14 agronomic parameters in the equation significantly influenced the yield of rapeseed. Moreover, the equation was also used to assess high yield of rapeseed. Finally, based on the comprehensive performance of the varieties, ‘Qingza 12’ and ‘Longyou 19’ were identified as suitable for planting in the Aksu region of Xinjiang. |
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