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- W2398871508 abstract "Taking one-year old Elaeagnus oxycarpa seedlings as test matenals, this paper studied their root activity and leaf cell membrane permeability, relative water content, photosynthetic pigment contents, and photosynthetic parameters at different soil relative moisture contents under natural drought condition. When the soil relative moisture content decreased from 70% (CK) to 40%, the E. oxycarpa seedlings root activity and net photosynthetic rate increased gradually and reached their maximum (1178 microg x g(-1) x h(-1) and 21.9 micromol x m(-2) x s(-1), respectively), photosynthetic pigment contents increased stably, transpiration rate and water use efficiency did not show any significant difference, and cell membrane permeability kept at a low level. When the soil relative moisture content decreased from 40% to 20%, the leaf relative water content was still higher than 50% , cell membrane permeability maintained at a low level, root activity and photosynthetic pigment contents remained high, and other photosynthesis parameters decreased slowly. When the soil relative moisture content decreased from 10% to 5%, the cell membrane permeability increased acutely, but the leaf relative water content, total chlorophyll content, all photosynthesis parameters, and root activity had a significant decrease. The water use efficiency reached the peak when the soil relative moisture content was 10%. To sum up, the optimal soil relative moisture content for E. oxycarpa seedlings should be 40% -50% , and the permanent wilting coefficient of the seedlings was 4.3% (soil relative moisture content)." @default.
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- W2398871508 date "2011-07-01" @default.
- W2398871508 modified "2023-09-26" @default.
- W2398871508 title "[Root activity and photosynthetic characteristics of Elaeagnus oxycarpa seedlings under drought stress]." @default.
- W2398871508 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22007456" @default.
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