Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (8): 1579-1588.doi: 10.16420/j.issn.0513-353x.2020-0502
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ZHONG Zaofa1, ZHANG Lijuan1, GAO Sisi1, PENG Ting1,2,*()
Received:
2021-04-15
Revised:
2021-07-15
Online:
2021-08-25
Published:
2021-09-06
Contact:
PENG Ting
E-mail:pengting@gnnu.edu.cn
CLC Number:
ZHONG Zaofa, ZHANG Lijuan, GAO Sisi, PENG Ting. Leaf Cytological Characteristics and Resistance Comparison of Four Citrus Rootstocks Under Drought Stress[J]. Acta Horticulturae Sinica, 2021, 48(8): 1579-1588.
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URL: https://www.ahs.ac.cn/EN/10.16420/j.issn.0513-353x.2020-0502
Fig. 2 Relative water loss(A)and electrolyte leakage(B)of detached leaves from different Citrus rootstocks under dehydration Different lowercase letters indicate significant difference among the four varieties at the same time point(P < 0.05). The same below.
品种 Cultivar | 栅栏组织层数 No. of palisade parenchyma | PPT 栅栏组织厚度/μm Palisade parenchyma thickness | SPT 海绵组织厚度/μm Sponge parenchyma thickness | PPT/SPT |
---|---|---|---|---|
三湖红橘 Sanhu Red Tangerine | 2 | 46.42 ± 1.23 B | 82.77 ± 4.63 B | 0.57 ± 0.045 A |
枳 Poncirus trifoliata | 1 ~ 2 | 46.60 ± 1.02 B | 154.30 ± 3.61 A | 0.30 ± 0.012 B |
枳橙 Carrizo citrange | 1 ~ 2 | 47.24 ± 1.17 B | 150.96 ± 3.00 A | 0.31 ± 0.013 B |
崇义野橘Chongyi wild mandarin | 1 ~ 2 | 54.10 ± 1.25 A | 153.70 ± 9.74 A | 0.36 ± 0.027 B |
Table 1 Indexes of leaf microstructures from Sanhu Red Tangerine,Poncirus trifoliata,Carrizo citrange and Chongyi wild mandarin
品种 Cultivar | 栅栏组织层数 No. of palisade parenchyma | PPT 栅栏组织厚度/μm Palisade parenchyma thickness | SPT 海绵组织厚度/μm Sponge parenchyma thickness | PPT/SPT |
---|---|---|---|---|
三湖红橘 Sanhu Red Tangerine | 2 | 46.42 ± 1.23 B | 82.77 ± 4.63 B | 0.57 ± 0.045 A |
枳 Poncirus trifoliata | 1 ~ 2 | 46.60 ± 1.02 B | 154.30 ± 3.61 A | 0.30 ± 0.012 B |
枳橙 Carrizo citrange | 1 ~ 2 | 47.24 ± 1.17 B | 150.96 ± 3.00 A | 0.31 ± 0.013 B |
崇义野橘Chongyi wild mandarin | 1 ~ 2 | 54.10 ± 1.25 A | 153.70 ± 9.74 A | 0.36 ± 0.027 B |
指标 Index | PC1 | PC2 | ||
---|---|---|---|---|
特征向量 Eigenvector | 载荷 Loading capacity | 特征向量 Eigenvector | 载荷 Loading capacity | |
相对失水率 Relative water loss | 0.836 | 0.316 | 0.432 | 0.358 |
电导率 Electrolyte leakage | 0.800 | 0.303 | 0.536 | 0.444 |
气孔密度 Stomatal density | 0.904 | 0.342 | -0.101 | -0.048 |
气孔开展长度Stomatal aperture length | -0.977 | -0.370 | -0.072 | -0.060 |
气孔开展宽度 Stomatal aperture width | -0.962 | -0.364 | 0.237 | 0.196 |
气孔开展面积 Stomatal aperture area | -0.911 | -0.345 | 0.403 | 0.334 |
栅栏组织厚度 Palisade parenchyma thickness(PPT) | -0.391 | -0.148 | 0.847 | 0.701 |
海绵组织厚度 Sponge parenchyma thickness(SPT) | 0.999 | 0.378 | -0.025 | -0.021 |
栅栏组织厚度/海绵组织厚度 PPT/SPT | 0.978 | 0.370 | 0.186 | 0.154 |
Table 2 Eigenvectors of each principal component
指标 Index | PC1 | PC2 | ||
---|---|---|---|---|
特征向量 Eigenvector | 载荷 Loading capacity | 特征向量 Eigenvector | 载荷 Loading capacity | |
相对失水率 Relative water loss | 0.836 | 0.316 | 0.432 | 0.358 |
电导率 Electrolyte leakage | 0.800 | 0.303 | 0.536 | 0.444 |
气孔密度 Stomatal density | 0.904 | 0.342 | -0.101 | -0.048 |
气孔开展长度Stomatal aperture length | -0.977 | -0.370 | -0.072 | -0.060 |
气孔开展宽度 Stomatal aperture width | -0.962 | -0.364 | 0.237 | 0.196 |
气孔开展面积 Stomatal aperture area | -0.911 | -0.345 | 0.403 | 0.334 |
栅栏组织厚度 Palisade parenchyma thickness(PPT) | -0.391 | -0.148 | 0.847 | 0.701 |
海绵组织厚度 Sponge parenchyma thickness(SPT) | 0.999 | 0.378 | -0.025 | -0.021 |
栅栏组织厚度/海绵组织厚度 PPT/SPT | 0.978 | 0.370 | 0.186 | 0.154 |
品种 Cultivar | PC1得分 Score of PC1 | PC2得分 Score of PC2 | 综合得分 Comprehensive score | 排序 Ranking |
---|---|---|---|---|
三湖红橘 Sanhu Red Tangerine | 3.96 | 2.37 | 3.69 | 1 |
枳 Poncirus trifoliata | -0.91 | -1.11 | -0.94 | 2 |
枳橙 Carrizo citrange | -1.32 | -1.07 | -1.28 | 4 |
崇义野橘 Chongyi wild mandarin | -1.18 | -0.01 | -0.98 | 3 |
Table 3 Comprehensive score and drought tolerance ranking of the four cultivars
品种 Cultivar | PC1得分 Score of PC1 | PC2得分 Score of PC2 | 综合得分 Comprehensive score | 排序 Ranking |
---|---|---|---|---|
三湖红橘 Sanhu Red Tangerine | 3.96 | 2.37 | 3.69 | 1 |
枳 Poncirus trifoliata | -0.91 | -1.11 | -0.94 | 2 |
枳橙 Carrizo citrange | -1.32 | -1.07 | -1.28 | 4 |
崇义野橘 Chongyi wild mandarin | -1.18 | -0.01 | -0.98 | 3 |
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