ISSN:
1573-5095
Keywords:
water stress
;
transpiration
;
chlorophyll
;
ethylene
;
Eucalyptus grandis
;
E. camaldulensis
;
E. robusta
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract A study was conducted with seven-month-old plantlets, of the clone 2814 of Eucalyptus grandis × E. camaldulensis Dehnh. hybrid and of the clone 2798 of E. grandis × E. robusta Sm., subjected to sublethal water stress. During the imposed drought, leaf water potentials and transpiration rates decreased, while ethylene production and leaf chlorophyll concentration increased to a maximum during the onset of water stress, and then declined. Stomatal closure coincided with or preceded maximum ethylene production. A saturation type relationship between ethylene production and chlorophyll concentration was observed. Genotypic differences in the response to water stress occurred between clones with clone 2814 appearing to be a drought avoider and clone 2798 a drought tolerator.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00035487
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