Leaf water relations and gas exchange in container-grown plants of two genotypes of Nerium oleander L. as affected by water deficiency

S. Mugnai; A. Pardossi; G. Serra; F. Tognoni

Leaf water relations and gas exchange in container-grown plants of two genotypes of Nerium oleander L. as affected by water deficiency

S. Mugnai^*
, A. Pardossi
, G. Serra
, F. Tognoni

^*Corresponding author for this work

Sant'Anna School of Advanced Studies

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

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Abstract

The influence of drought on leaf water relations and gas exchange was investigated in containergrown plants of standard (cv. Rosso Comune) and dwarf (cv. Petit Salmon) genotypes of Nerium oleander L.
Dwarf plants had more leaves of smaller size and higher chlorophyll content than standard cultivars. Under nonlimiting water conditions dwarf genotype showed lower stomatal conductance and net photosynthesis than
standard plants notwithstanding higher values of turgor pressure. In both genotypes water shortage caused
similar decline in leaf gas exchange. The analysis of the relationship of leaf photosynthesis or stomatal
conductance against turgor pressure indicates a greater responsiveness of standard genotypes to variation in leaf
water status. Results suggest also that stomatal factors may play a more important role than nonstomatal ones
in limiting photosynthesis of oleander subjected to rapidly-occurring water stress

Original language	English
Pages (from-to)	27-32
Number of pages	6
Journal	Advances in Horticultural Science
Volume	9
Issue number	1
Publication status	Published - 1995
Externally published	Yes

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title = "Leaf water relations and gas exchange in container-grown plants of two genotypes of Nerium oleander L. as affected by water deficiency",

abstract = "The influence of drought on leaf water relations and gas exchange was investigated in containergrown plants of standard (cv. Rosso Comune) and dwarf (cv. Petit Salmon) genotypes of Nerium oleander L. Dwarf plants had more leaves of smaller size and higher chlorophyll content than standard cultivars. Under nonlimiting water conditions dwarf genotype showed lower stomatal conductance and net photosynthesis than standard plants notwithstanding higher values of turgor pressure. In both genotypes water shortage caused similar decline in leaf gas exchange. The analysis of the relationship of leaf photosynthesis or stomatal conductance against turgor pressure indicates a greater responsiveness of standard genotypes to variation in leaf water status. Results suggest also that stomatal factors may play a more important role than nonstomatal ones in limiting photosynthesis of oleander subjected to rapidly-occurring water stress",

author = "S. Mugnai and A. Pardossi and G. Serra and F. Tognoni",

year = "1995",

language = "English",

volume = "9",

pages = "27--32",

journal = "Advances in Horticultural Science",

issn = "0394-6169",

publisher = "University of Florence",

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TY - JOUR

T1 - Leaf water relations and gas exchange in container-grown plants of two genotypes of Nerium oleander L. as affected by water deficiency

AU - Mugnai, S.

AU - Pardossi, A.

AU - Serra, G.

AU - Tognoni, F.

PY - 1995

Y1 - 1995

N2 - The influence of drought on leaf water relations and gas exchange was investigated in containergrown plants of standard (cv. Rosso Comune) and dwarf (cv. Petit Salmon) genotypes of Nerium oleander L. Dwarf plants had more leaves of smaller size and higher chlorophyll content than standard cultivars. Under nonlimiting water conditions dwarf genotype showed lower stomatal conductance and net photosynthesis than standard plants notwithstanding higher values of turgor pressure. In both genotypes water shortage caused similar decline in leaf gas exchange. The analysis of the relationship of leaf photosynthesis or stomatal conductance against turgor pressure indicates a greater responsiveness of standard genotypes to variation in leaf water status. Results suggest also that stomatal factors may play a more important role than nonstomatal ones in limiting photosynthesis of oleander subjected to rapidly-occurring water stress

AB - The influence of drought on leaf water relations and gas exchange was investigated in containergrown plants of standard (cv. Rosso Comune) and dwarf (cv. Petit Salmon) genotypes of Nerium oleander L. Dwarf plants had more leaves of smaller size and higher chlorophyll content than standard cultivars. Under nonlimiting water conditions dwarf genotype showed lower stomatal conductance and net photosynthesis than standard plants notwithstanding higher values of turgor pressure. In both genotypes water shortage caused similar decline in leaf gas exchange. The analysis of the relationship of leaf photosynthesis or stomatal conductance against turgor pressure indicates a greater responsiveness of standard genotypes to variation in leaf water status. Results suggest also that stomatal factors may play a more important role than nonstomatal ones in limiting photosynthesis of oleander subjected to rapidly-occurring water stress

UR - https://www.scopus.com/pages/publications/0028801576

M3 - Article

AN - SCOPUS:0028801576

SN - 0394-6169

VL - 9

SP - 27

EP - 32

JO - Advances in Horticultural Science

JF - Advances in Horticultural Science

IS - 1

ER -

Leaf water relations and gas exchange in container-grown plants of two genotypes of Nerium oleander L. as affected by water deficiency

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