A reply to Kozlov

Article Abstract:

Relative growth rates and size-adjusted fluctuating asymmetry are not, as has been asserted, appropriate ways to examine birch tree leaf growth. Researchers assuming exponentiality of leaf growth curve and seeing close positive correlations between physiological stage and leaf length tend to ignore the crucial data from detailed chemical and physiological analyses.

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Current measures of nutrient resorption efficiency lead to a substantial underestimation of real resorption efficiency: facts and solutions

Article Abstract:

The authors present a formula describing change in leaf growth based on the difference between the measured resporption efficiency and real resorption efficiency. Data subjected to this formula shows leaf mass loss can be as high as 21% and leaf shrinkage as much as 11% during senescence.

Netherlands, Plant nutrition

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Are fast growing birch leaves more asymmetrical?

Article Abstract:

Recent assertions about rapid leaf growth in birch tree leaves have not offered incontrovertible support for the cause of asymmetry. Further study has disclosed no correlation between relative or absolute leaf growth and fluctuating asymmetry.

Finland

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