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Growth and maintenance respiration of shoot and roots in scotch pine pinus sylvestris seedlings

Szaniawski, R.K.

Zeitschrift fuer Pflanzenphysiologie 101(5): 391-398

1981


Accession: 005538230

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Continuous daily measurements of CO2-evolution were carried out separately for shoots and roots of intact Scotch pine seedlings grown in a water culture under laboratory controlled conditions, during the 1st vegetation season. The rates of root respiration at constant temperature during the night were lower than those during the day when plants were photosynthesizing. The obtained results were used for estimation of growth (constructive)- and maintenance-respiratory coefficients. Maintenance and growth respiration were greater in the roots than in the shoot.

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