Morphological Responses of Geraldton Wax to Transient Soil-Water Deficit

Akilan, K, Considine, JA, Joyce, DC and Marshall, JK (1994) Morphological Responses of Geraldton Wax to Transient Soil-Water Deficit. Australian Journal of Botany, 42 2: 205-217. doi:10.1071/BT9940205


Author Akilan, K
Considine, JA
Joyce, DC
Marshall, JK
Title Morphological Responses of Geraldton Wax to Transient Soil-Water Deficit
Journal name Australian Journal of Botany   Check publisher's open access policy
ISSN 0067-1924
Publication date 1994-01-01
Year available 1994
Sub-type Article (original research)
DOI 10.1071/BT9940205
Open Access Status Not yet assessed
Volume 42
Issue 2
Start page 205
End page 217
Total pages 13
Place of publication COLLINGWOOD
Publisher C S I R O PUBLICATIONS
Language eng
Abstract Changes in leaf angle and flower diameter of Geraldton wax (Chamelaucium uncinatum) in response to declining shoot water potential (Psi(shoot)) were assessed as indicators of plant water status. Leaves and petals in Geraldton wax moved vertically as Psi(shoot) decreased. In cv. Purple Pride, the leaf angle of recently-matured, fully-expanded leaves and the diameter of fully developed flowers showed strong linear correlations with declining Psi(shoot) (r(2) = 0.90 and 0.94 respectively). The relationships were less strong when applied to almost fully expanded leaves (r(2) = 0.51) and young flowers (r(2) = 0.64). Older leaves showed no consistent correlation between leaf angle and Psi(shoot) (r(2) = 0.01). Similar results were observed in cvv. Alba and Lady Stephanie, but the change in orientation for a given change in Psi(shoot) was smaller in cv. Alba than those observed in cvv. Purple Pride and Lady Stephanie. Vertical orientation of leaves and flower petals in droughted plants could be used as indicators of level of water deficit.
Keyword Leaflet Movements
Drought
Orientation
Stress
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: ResearcherID Downloads - Archived
 
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