| Analysis of alkali tolerance of Sea\|island cotton seedlings based on root characteristics |
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| DOI：10.7606/j.issn.1000-7601.2023.02.03 |
| Key Words: Sea\|island cotton Na2CO3 stress seedling root characteristics alkali tolerance |
| Author Name | Affiliation | | YANG Tao | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China | | LI Haochen | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China | | ZHAO Kang | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China | | WANG Honggang | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China | | CHENG Luyao | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China | | GAO Wenwei | College of Agriculture, Xinjiang Agricultural University, Engineering Research Centre of Cotton, Ministry of Education, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| In this study, the alkali resistance of Sea\|island cotton was studied at the seedling stage of Sea\|island cotton. Different Na2CO3 stress gradients of 0.00%, 0.07%, 0.09% and 0.11% were set. The optimal gradient of Na2CO3 was used to evaluate the tolerance of Sea\|island cotton. The results showed that 0.09% Na2CO3 stress was the most suitable for identifying alkali resistance of Sea\|island cotton. Under 0.09% Na2CO3 alkali stress, the root characteristics of Sea\|island cotton varieties were inhibited to varying degrees, and the pixel area variation was weak. The traits were divided into 3 components: the first principal component was root biomass and morphological factor; the second principal component was lateral root factor; the third principal component was principal root length factor. The fitting between the membership function value and the D value was good and significant. Therefore, a comprehensive evaluation of the two could be carried out. The alkali resistance of Sea\|island cotton was divided into four categories: sensitive, weak alkali resistance, alkali resistance, and strong resistance. The sensitive materials 4401 and S(L) and strong resistance materials JZ-1 were selected. Sea\|island cotton materials were mainly intermediate and less extreme materials. |
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