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- W2374198486 abstract "【Objective】Through analyzing the changes of photosynthesis and chlorophyll fluorescence parameters at one year old stage in black mulberry transplanted seedlings under Na Cl treatment,the project aims to study its the salt tolerance in the hope providing a theoretical basis for the application of black mulberry in saline alkali soil.【Method】The one year old transplanted seedlings of black mulberry were treated with dif-ferent concentration of Na Cl,the concentration of Na Cl was 0,50,100,150,200,250,300 mmol / L,the photosynthesis and chlorophyll fluorescence parameters of physiological indicators of black mulberry leaves were measured after being treated with Na Cl for 12 days. One year old transplanted black mulberry seedlings were chosen and then listed and then the fourth full leaves( also listed and marked) of the plants were measured and five in each treatment. 【Result】The results showed that,under low Na Cl concentration treatment( 50 mmol/L),there was no significant effect on ΦPSⅡ,q P,ETR and Fv'/Fm'of annual transplanted black mulberry seedlings; Under high Na Cl treatment( Na Cl≥100 mmol / L),Pn,Gs,ETR,Fv'/ Fm',ΦPSⅡand q P were reduced,while Ci increased.【Conclusion】Annual transplanted seedlings of black mulberry grew well under 50 mmol / L Na Cl treatment and its photosynthetic fluorescence characteristics were not affected.Under 100,150 mmol / L Na Cl treatment,although its photosynthetic fluorescence characteristics were restrained,but still a high photosynthetic net accumulation maintained. One- year- old transplanted seedlings of black mulberry suffered minor injuries and still survived. Under 200,250,300 mmol / L Na Cl treatment,the seedling suffered more serious damage,especially under 250,300 mmol / L Na Cl treatment,their leaves became dry and withered,and a little while later began to fall. The decrease of net photosynthetic rate was considered as a result of no- stomatal restriction turning stomatal restriction along with Na Cl concentration increase. Changes of photosynthetic and chlorophyll fluorescence parameters were highly correlated with salt tolerance of black mulberry and salt concentration." @default.
- W2374198486 created "2016-06-24" @default.
- W2374198486 creator A5022148508 @default.
- W2374198486 date "2014-01-01" @default.
- W2374198486 modified "2023-09-23" @default.
- W2374198486 title "Effects of Na Cl Stress on the Characteristics of Photosynthesis and Chlorophyll Fluorescence at One Year Old Stage in Black Mulberry Transplanted Seedlings" @default.
- W2374198486 hasPublicationYear "2014" @default.
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