Bulletin of Botanical Research ›› 2025, Vol. 45 ›› Issue (4): 614-626.doi: 10.7525/j.issn.1673-5102.2025.04.013
• Original Paper • Previous Articles Next Articles
Ying WANG1,2, Maojin ZHAO1, Xiuming LIU1, Yixuan WU1, Jiahao ZHU1, Chengzhong WANG1()
Received:
2024-08-25
Online:
2025-07-20
Published:
2025-07-25
Contact:
Chengzhong WANG
E-mail:754409736@qq.com
CLC Number:
Ying WANG, Maojin ZHAO, Xiuming LIU, Yixuan WU, Jiahao ZHU, Chengzhong WANG. Tolerance and Enrichment Characteristics of Agapanthus praecox ssp. orientalis ‘Big Blue’ under Cadmium Stress[J]. Bulletin of Botanical Research, 2025, 45(4): 614-626.
Fig.2
Effects of heavy metal cadmium stress on antioxidant enzyme activity and malondialdehyde mass fraction of Agapanthus praecox ssp. orientalis ‘Big Blue’Different capital or lowercase letters in case represented significant differences in root or leaf parameter between treatments (P<0.05), respectively.
Table 1
Effects of heavy metal cadmium stress on photosynthetic pigment mass fraction of Agapanthus praecox ssp. orientalis‘Big Blue’
镉质量分数 Cadmium mass fraction/ (mg·kg-1) | 叶绿素a Chla/(mg·g-1) | 叶绿素b Chlb/(mg·g-1) | 叶绿素a+b Chla+b/(mg·g-1) | 叶绿素a/b Chla/b | 类胡萝卜素 Carotenoid/(mg·g-1) |
---|---|---|---|---|---|
0 | 0.89±0.02a | 0.36±0.01a | 2.51±0.03a | 2.46±0.01a | 0.21±0.01a |
200 | 0.88±0.02a | 0.35±0.01a | 2.47±0.02a | 2.45±0.05a | 0.20±0.01a |
500 | 0.66±0.01b | 0.30±0.01b | 0.96±0.01b | 2.22±0.03b | 0.17±0.01b |
Table 2
Effects of heavy metal cadmium on the chlorophyll fluorescence parameters of Agapanthus praecox ssp. orientalis‘Big Blue’
镉质量分数 Cadmium mass fraction/ (mg·kg-1) | 最大光化学效率 Fv/Fm | PSⅡ潜在活性 Fv/Fo | 实际光化学效率 ΦPSⅡ | 光化学淬灭系数 qP | 非光化学淬灭系数 NPQ |
---|---|---|---|---|---|
0 | 0.83±0.01a | 4.38±0.01a | 0.36±0.01a | 0.63±0.01a | 0.60±0.01a |
200 | 0.81±0.01a | 4.21±0.30a | 0.34±0.03a | 0.58±0.01a | 0.62±0.01a |
500 | 0.69±0.02b | 3.66±0.01b | 0.29±0.01b | 0.42±0.01b | 0.43±0.01b |
Table 3
Effects of cadmium stress on the heavy metal enrichment characteristics of Agapanthus praecox ssp. orientalis ‘Big Blue’
镉质量分数 Cd mass fraction/ (mg·kg-1) | 叶片镉质量分数 Leaf Cd mass fraction/ (mg·kg-1) | 根部镉质量分数 Root Cd mass fraction/ (mg·kg-1) | 叶片富集系数 Leaf enrichment coefficient | 根部富集系数 Root enrichment coefficient | 转运系数 Transport coefficient |
---|---|---|---|---|---|
0 | — | — | — | — | — |
200 | 172.45±1.05b | 164.93±1.58b | 0.86±0.01a | 0.82±0.01a | 1.05±0.01b |
500 | 422.37±1.12a | 318.03±1.39a | 0.84±0.01a | 0.64±0.01b | 1.33±0.01a |
Fig.5
Correlation analysis between various indices of Agapanthus praecox ssp. orientalis ‘Big Blue’ under Cd treatmentsCd. Cd mass fraction;LB. Leaf biomass;RB. Root biomass; LC. Leaf CAT;RC. Root CAT;LP. Leaf POD;RP. Root POD;LS. Leaf SOD; RS. Root SOD; LSP. Leaf soluble protein; RSP. Root soluble protein;LSS. Leaf soluble sugar; RSS. Root soluble sugar;LM. Leaf malondialdehyde; RM. Root malondialdehyde; LCd. Leaf Cd mass fraction;RCd. Root Cd mass fraction;LEC. Leaf enrichment coefficients; REC. Root enrichment coefficients; TC. Transport coefficients;Chla. Chlorophyll a; Chlb. Chlorophyll b; a+b. Chlorophyll a+b;a/b. Chlorophyll a/b;Car. Carotenoid;Tr. Transpiration rate;Pn. Photosynthetic rate;Gs. Stomatal conductance;Ci. Intercellular CO2 mole fraction;Fv/Fm. PSⅡ maximum photochemistry efficiency;Fv/Fo. PSⅡ potential activity;ΦPSⅡ. PSⅡ actual photochemical quantum efficiency;qP Chemical quenching coefficient;NPQ Non-photochemical quenching coefficient.
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