THE EFFECT OF MANGANESE ON ROOT EXTENSION OF GEUM RIVALE L., G. URBANUM L. AND THEIR HYBRIDS

• DOI: 10.1111/j.1469-8137.1987.tb00168.x
• Publication Date: 2006-04-29T21:21:51Z
• Authors: S. WALDREN; M. S. DAVIES; J. R. ETHERINGTON
• Keywords: Elongation; Membrane permeability

S ummary Root elongation of Geum rivale and G. urbanum grown in nutrient solution decreased as manganese concentration was increased above 25 mg dm −3 , especially urbanum. Prior exposure roots to Mn their capacity for subsequent solutions, the effect such pretreatment being most pronounced rivale. significantly more tolerant 50 than Efflux potassium from root segments, used a measure membrane permeability, higher at this concentration. Tolerance by progeny hybrid individuals generally related morphological intermediacy, although there were some noticeable exceptions. Manganese tolerance hybrids could not be consistently known waterlogging.