Document Detail
Assumptions of Plastochron Index: Evaluation With Soya Bean Under Field Drought Conditions
Abstract/OtherAbstract :
Erickson and Michelini (1957) derived the plastochron index (PI) and a term sometimes referred to as the plastochron ratio (PR), as quantitative expressions of the vegetative development of plants. With the stable plant growth in environmental chambers and glasshouses, the assumptions used to derive these terms have been validated. However, more recently these expressions are being used to characterize growth under the unstable conditions resulting from the imposition of stress. This study examines the validity of the assumptions used to derive PI and PR for field-grown soya beans [<it>Glycine max</it> (L.) Merrill] subjected to drought stress. Under stress conditions, the assumptions were not satisfied. In fact, observing change in PR appeared to be a good method for detecting drought stress in these plants. An alternate method for calculating PI based on a single, young leaf was developed. This alternate method appeared to be a more sensitive indicator of changes in leaf emergence rate under unstable conditions.
Authors :
Related Documents :
1120247 - Periodic drought stress effect on evapotranspiration, root hydraulic conductance and fr...
36628627 - Influence of fines content and initial shear stress on dynamic properties of hydraulic ...
32479937 - Desiccation tolerance in bryophytes: a reflection of the primitive strategy for plant s...
1133077 - Growth, gas exchange, chlorophyll a fluorescence, biomass accumulation and partitioning...
29982857 - Catalog of marine benthic algae from new caledonia
32568177 - Startup of an anaerobic single stage digester with a fixed wheat straw bed
Contributors :
Publication Detail :
Publisher :  Oxford University Press     Type :  TEXT     Format :  text/html    
Date Detail :
1982-11-01 00:00:00.0
Subject :
Coverage :
Relation :
Source :
Copyright Information :
Copyright (C) 1982, Oxford University Press
Other Details :
Languages :  en    
Export Citation :
APA/MLA Format     Download EndNote     Download BibTex

Previous Document:  Stereological Analysis of Floral Development and Quantitative Histochemistry of Nucleic Acids in Fer...
Next Document:  The Effect of Desiccation on the Longevity of Seeds of Araucaria hunsteinii and A. cunninghamii