| Analysis of saline\|alkaline tolerance in seedling stage and screening of identification indexes of different oat genotypes |
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| DOI：10.7606/j.issn.1000-7601.2019.03.03 |
| Key Words: oat seedling stage saline\|alkaline tolerance multiple analysis identification index |
| Author Name | Affiliation | | FU Luan-hong | College of Agriculture, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, Heilongjiang 163319, China | | YU Song | College of Agriculture, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, Heilongjiang 163319, China | | YU Li-he | College of Agriculture, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, Heilongjiang 163319, China | | XUE Ying-wen | College of Agriculture, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, Heilongjiang 163319, China | | GUO Wei | College of Agriculture, Heilongjiang Bayi Agricultural University, Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing, Heilongjiang 163319, China |
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| Abstract: |
| In order to explore the salt alkaline bearing capacity of different oat cultivars in seedling stage and screen the oat cultivars, which are well suited for Songnen Plain to grow. This research used Hoagland hydroponics with high concentrations of 250 mmol·L-1 NaHCO3 stress to simulate the saline conditions of Songnen Plain, and carried out a study on 49 major oat cultivars, which came from China and abroad. Nine indexes including plant height (X1), root length (X2), aboveground fresh weight (X3), underground fresh weight (X4), aboveground dry weight (X5), underground dry weight (X6), aboveground water content (X7), underground water content (X8), and root shoot ratio (X9) were measured under 250 mmol·L-1 NaHCO3 stress. Based on the saline\|alkaline tolerance coefficient (SATC) of each individual indicator, different oat cultivars were evaluated by principal components analysis, subordinate function analysis, and clustering analysis. The results showed that three comprehensive indexes including X4, X7 and X8 were obtained by principle component analysis of saline\|alkaline tolerance coefficients of all indexes. The comprehensive indexes described 86.155% information of all data. The 49 oat cultivars were divided into three groups through subordinate function analysis and clustering analysis. Among them, Caoyou 1, Zhangyan 7 and T7 were salt\|tolerant cultivars, 41 cultivars such as HLJ 1, Baiyan 2 were moderate tolerant to saline\|alkaline, 5 cultivars such as Sanfensan, Bayou 13 were sensitive to saline\|alkaline tolerance. |
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