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The results showed that low concentrations of cadmium stress have a strong stimulating effect on corn growth, high concentrations inhibit the growth of maize seedlings. With increasing Cd concentration, the chlorophyll content of maize leaves a downward trend, and 200um deal with the decline most significantly, down to what percentage of the control. Decreased the most significant black corn and white corn in the cadmium concentration of 50μmol / l to 100μmol / l, 100μmol / L to 150μmol / l, respectively, compared with the control ck down 49.63%, 41.94%. Induced by fluorescence and jip and fm (fv / fv / fo, ψo 更多：https://www.bmcx.com/ , φeo, φpo, etc.) were significantly lower,Rapid chlorophyll fluorescence induction kinetics are major differences between the decline phase in the j phase, i and p. The analysis of these parameters show that the different concentrations of Cd have varying degrees of impact on corn ps II function, resulting in the decline of photosynthetic capacity of maize leaves, the chlorophyll decomposition. Cd treatment also capture energy (tro / cso) per unit area, the electron transfer energy (eto / cso) gradually decreased, the dissipation of energy (dio / cso) gradually increased, which suggests that the energy increase of the reaction centers .

Results show that low concentrations of cadmium stress on growth of maize with strong stimulating effect, inhibits the growth of maize seedlings of high concentration. Cadmium concentrations increase leaf chlorophyll content in maize have declined and 200um fell significantly, down to control what percentage of. Black and white corn maize separately in a concentration of 50 µg mol/L to 100 µg of cadmium mol/L, 100 µg mol/L to 150 µg mol/L dropped most significantly when, respectively, than the control CK down, 49.63%. Cadmium-induced fluorescence and JIP (Fv/Fm, and Fv/Fo 更多：https://www.bmcx.com/ , and ψ o, PHI Eo, PHI Po etc) are significantly reduced,Fast chlorophyll fluorescence induction kinetic differences mainly in the j curve of phase-phase and I-phase and p declined. Through the analysis of these parameters indicate that PS ⅱ functions of different concentrations of cadmium on maize has a different degree of influence, led to decline in corn leaf photosynthetic capacity and chlorophyll decomposition. Cadmium can also capture energy per unit area (TRo/CSo), electron transfer of energy (ETo/CSo) gradually declined, and dissipation of energy (DIo/CSo) gradually increased, this also indicates that the activity of the reaction centers of energy increase.

The results showed that low cadmium stress concentration on maize growth strong stimulation, inhibit the growth of high concentration corn seedling. With the increasing of the concentration of cadmium processing, corn the leaves of the chlorophyll content has a descending trend, and with the 200 um processing decline the most obvious, reduced to control what percentage.Black and white corn corn respectively in cadmium concentration of 50 µ mol/L to 100 µ mol/L, 100 µ mol/L to 150 µ mol/L falls the most significant, and were down 49.63% compared with CK, 41.94%. Cadmium stress caused by fluorescence and JIP (Fv/Fm, Fv/Fo, ψ o, φ Eo 更多：https://www.bmcx.com/ , φ Po, etc) were significantly lower,Chlorophyll fluorescence dynamic curve fast induced mainly displays in J phase difference, I and P in the fall. Through the analysis of these parameters different concentration, cadmium treatment on the PS Ⅱ function corn are of different influences, lead to corn leaves reduced ability to photosynthesis, chlorophyll breaks down.Cadmium treatment can also capture energy per unit area (TRo/CSo, electron transfer energy (ETo/CSo gradually declined, dissipative energy (DIo/CSo is increasing gradually, it also shows that the response of the active center of energy consumption improved.

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