| Analysis of photosynthetic physiology and genetic diversity in spring wheat varieties from Xinjiang over the past 40 years |
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| DOI：10.7606/j.issn.1000-7601.2025.02.02 |
| Key Words: spring wheat variety photosynthetic physiology genetic diversity dry matter accumulation yield Xinjiang |
| Author Name | Affiliation | | ZHANG Jingcan | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | XU Qijiang | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | ZHANG Yongqiang | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | ZENG Chaowu | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | BI Haiyan | Rural Energy Workstation in Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang 830001, China | | LEI Junjie | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | CHEN Chuanxin | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | NIE Shihui | Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi, Xinjiang 830091, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | XU Wenxiu | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LI Jie | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China | | CHEN hui | College of Agronomy, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
Key Laboratory of Desert － Oasis Crop Physiology, Ecology and Cultivation, MOARA, Urumqi, Xinjiang 830091, China |
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| Abstract: |
| Using 65 spring wheat varieties of different ages approved from 1985 to 2024 as materials, the proportion of dry matter allocation during the grain filling stage was analyzed. Genetic variation, correlation, clustering, and principal component analysis were performed on the main photosynthetic physiological indicators of wheat, and a comprehensive evaluation was conducted. The results showed that there was rich genetic diversity in agronomic traits among different varieties. The diversity index of 65 wheat materials ranged from 1.81 to 2.03, with the highest intercellular CO2 concentration at 2.03 and the lowest Fo/Fm at 1.81. The principal component analysis transformed the eight traits into three principal components, with a cumulative contribution rate of 73.429%. Among them, Fv/Fm had the greatest impact on yield, with a contribution value of 0.923. With the advancement of the approval year, the proportion of dry matter in leaves and ears showed an upward trend, while the proportion of dry matter in stems showed a downward trend. The yield showed an upward trend with the advancement of the approval year, and the yield varied between 4 443.3~8 582.4 kg·hm-2 among different varieties. Based on the contribution rate weights of the three principal component factors and the yield performance of wheat varieties from different years, the following 10 varieties were selected: ‘Xinchun 41’, ‘Xinchun 31’, ‘Xinchun 47’, ‘Xinchun 40’, ‘Xinchun 46’, ‘Liangchun 1354’, ‘Xinchun 37’, ‘Xinchun 30’, ‘Liangchun 1758’, and ‘Xinchun 34’. Among them, ‘Xinchun 47’ had the highest yield (8 143.20 kg·hm-2) and can be used as a high photosynthetic efficiency variety for breeding, utilization and promotion in Xinjiang region. |
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