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- W2361678403 abstract "Taking one-year-old pot seedlings of cultivar ‘Powderblue'of rabbiteye blueberry( Vaccinium ashei Reade) and superior strain A47 of cultivar ‘Southmoon ' of southern highbush blueberry( V.corymbosum hybrids) as tested materials,effects of successive drought and flooding treatments on their growth and photosynthetic characteristics were researched. The results show that with prolonging of drought and flooding treatment times,damage symptoms of wilting or withering of stems and leaves,and leaf abscission of ‘Powderblue ' and A47 seedlings are aggravated, and their growth indexes and photosynthetic parameters decrease obviously. In drought and flooding treatments for 35 d,their branch length,increment of branch length,dry weight of root,dry weight of stem and leaf,increment of plant growth and relative growth rate all are significantly lower than those of the control,while root / shoot ratio has no significant difference with that of the control; in drought and flooding treatments for 14 d,their net photosynthetic rate,stomatal conductance and transpiration rate of leaf all are significantly lower than those of the control,while generally difference in intercellar CO2 concentration is not significant with that of the control. With prolonging of drought and flooding stress times(0- 35 d),chlorophyll content index in leaf of ‘Powderblue'and A47 seedlings decreases gradually and are generally lower than that of the control,while the maximal photochemical efficiency of PSⅡ and effective quantum yield of PSⅡ totally appear the trend of firstly increasing and then decreasing and all are lower than those of the control at the middle and late periods of drought and flooding treatments. It is suggested that drought and flooding treatments have an obvious inhibition on growth and photosynthetic characteristics of ‘Powderblue'and A47 seedlings,but there are a certain difference in change range of their growth and photosynthetic characteristics under conditions of drought and flooding stresses,and their sensitivity to drought stress is stronger." @default.
- W2361678403 created "2016-06-24" @default.
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- W2361678403 date "2015-01-01" @default.
- W2361678403 modified "2023-09-27" @default.
- W2361678403 title "Influence of drought and flooding treatments on growth and photosynthetic characteristics of blueberry( Vaccinium spp.)" @default.
- W2361678403 hasPublicationYear "2015" @default.
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