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Abstract

Proline level in leaves and yield of cuttings and flowers of chrysanthemum as influenced by different root zone conditions.

Chrysanthemum stock plants and cut flowers were grown in the greenhouse under different root zone conditions. Proline levels in the leaves were measured as an indicator of the relative stress and related to the yields of cuttings and flowers. The plants were grown in pear-based substrates or in the cultivation system plant plane hydroponic (PPH), using different fleeces as substrate. PPH plants contained higher proline levels with higher temporal variation and had lower yields as compared with the non-hydroponic systems. Proline levels and the corresponding yields indicated similiar proline threshold ranges for the yield reduction of both stock plants and cut flowers.



Drüge, U. 1997. Proline level in leaves and yield of cuttings and flowers of chrysanthemum as influenced by different root zone conditions. Scientia Horticulturae 68 (1997) 171-180.