Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by BRADFIELD, E. G.
Right arrow Articles by GUTTRIDGE, C. G.
Right arrow Search for Related Content
PubMed
Right arrow Articles by BRADFIELD, E. G.
Right arrow Articles by GUTTRIDGE, C. G.
Agricola
Right arrow Articles by BRADFIELD, E. G.
Right arrow Articles by GUTTRIDGE, C. G.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Annals of Botany 43: 363-372, 1979
© 1979 Annals of Botany Company

RESEARCH-ARTICLE

The Dependence of Calcium Transport and Leaf Tipburn in Strawberry on Relative Humidity and Nutrient Solution Concentration

E. G. BRADFIELD and C. G. GUTTRIDGE

Long Ashton Research Station, University of Bristol Long Ashton, Bristol BS18 9AF

Accepted: 3 April 1978   

Strawberry plants were grown in controlled-environment cabinets with different day-and-night relative humidities, in nutrient solutions of different osmotic potential and different calcium concentrations.

Leaf calcium (% d. wt.) depended strongly on leaf age and was lowest and very sensitive to environment when the leaf was emerging from the bud. Calcium in the emergent leaf was greatest and tipburn least when plants were grown in humid nights (VPD usually < 100 Pa) and weak nutrient solutions (osmotic potential about –25 kPa). Such plants guttated freely. In contrast plants grown in dry nights (VPD, c. 600 Pa) never guttated, had small concentrations of calcium in emergent leaves and suffered tipburn. The behaviour of plants transferred between humidity treatments rapidly reflected the new conditions. Increasing the osmotic potential of the nutrient increased tipburn and decreased calcium in emergent leaves even though the nutrient contained more calcium.

When the calcium concentration in the emergent leaf exceeded 0.07 per cent of d. wt, tipburn was never seen; below 0.05 per cent tipburn was usually severe.

These results suggest that pre-emerged, and therefore non-transpiring, leaves depend for their calcium on water flow arising from root pressure at night. After leaf emergence, calcium intake into leaves was promoted by dry days, indicating that calcium was then supplied by transpirational water flow. Humid nights, dry days and weak nutrient solutions minimize the risk of leaf tipburn in strawberry.

Fragaria ananassa Duch., strawberry, tipburn, calcium transport, relative humidity, nutrient supply, guttation


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.