scholarly journals Effects of CO2 enrichment, leaf position and clone on stomatal index and epidermal cell density in poplar (Populus)

1995 ◽  
Vol 131 (1) ◽  
pp. 99-107 ◽  
Author(s):  
R. CEULEMANS ◽  
L. PRAET ◽  
X. N. JIANG
Keyword(s):  
Cell Density ◽  
Epidermal Cell ◽  
Co2 Enrichment ◽  
Leaf Position ◽  
Stomatal Index

scholarly journals Variation in Leaf Anatomical Traits of Pecan Cultivars

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 999E-1000
Author(s):  
Madhulika Sagaram ◽  
Leonardo Lombardini ◽  
Larry Grauke
Keyword(s):  
Geographic Variation ◽  
Cell Density ◽  
Epidermal Cell ◽  
Stomatal Density ◽  
Epidermal Cells ◽  
Stomatal Index ◽  
Natural Range

An assessment of anatomical traits of pecan cultivars (`Pawnee', `Mohawk', and `Starking hardy giant') collected from three locations (Tifton, Ga.; Chetopa, Kans.; and Stillwater, Okla.) was conducted at Texas A&M University. The objective of the study was to provide an understanding of patterns of geographic variation within the natural range for anatomical (stomatal density, stomatal index, and epidermal cell density) traits. Microscopy using acetate casts was used as the means to investigate the patterns of variation in the epidermal characteristics of pecan leaf. `Starking hardy giant' had the greatest number of stomates/cm2 (46,229, 47,807, and 45,990 at Tifton, Chetopa, and Stillwater, respectively) while `Mohawk' had the least (37,397, 36,217, and 35,305). `Pawnee' had the greatest number of epidermal cells/cm2 (251,806, 250,098 and 254,883 at Tifton, Chetopa, and Stillwater, respectively) while `Starking hardy giant' had the least (141,699, 138,405, and 142,155). Differences in stomatal index were observed between the three cultivars at Tifton and Stillwater. No differences in stomatal index were observed between `Pawnee' and `Mohawk' at Chetopa. The study showed that stomatal density as well as epidermal cell density of all the tested cultivars were significantly different (P < 0.05) at a particular location but no differences were observed in a given cultivar grown at different locations.

scholarly journals Variation in Leaf Anatomy of Pecan Cultivars from Three Ecogeographic Locations

2007 ◽  
Vol 132 (5) ◽  
pp. 592-596 ◽  
Author(s):  
Madhulika Sagaram ◽  
Leonardo Lombardini ◽  
L.J. Grauke
Keyword(s):  
Cell Density ◽  
Epidermal Cell ◽  
Stomatal Density ◽  
Carya Illinoinensis ◽  
Trichome Density ◽  
Stomatal Index ◽  
Cultivar Development ◽  
Natural Range ◽  
The Stability

An assessment of leaf anatomic traits of pecan [Carya illinoinensis (Wangenh.) C. Koch] cultivars (Pawnee, Mohawk, and Starking Hardy Giant) collected from three locations (Tifton, GA; Chetopa, KS; and Stillwater, OK) was conducted to provide an understanding of patterns of ecogeographical variation within the natural range. Acetate casts of representative leaves were prepared for microscopic characterization of epidermal traits (stomatal density, stomatal index, and epidermal cell density). There were differences among the three pecan cultivars at the same location, but there were no differences in stomatal density within the same cultivar grown at three distinct locations. The stomatal density of ‘Pawnee’ leaves (404 stomata/mm2) was intermediate between that of ‘Mohawk’ (363 stomata/mm2) and ‘Starking Hardy Giant’ (463 stomata/mm2). ‘Pawnee’ had the greatest epidermal cell density (2511 cells/mm2) whereas ‘Starking Hardy Giant’ showed the least (1414 cells/mm2). Within a location, stomatal index differed significantly among cultivars, with ‘Starking Hardy Giant’ having a greater stomatal index than the other two cultivars. There were no differences in stomatal index across locations. ‘Mohawk’ had the greatest trichome density (18.92 trichomes/mm2) whereas ‘Starking Hardy Giant’ had the lowest (9.6 trichomes/mm2). The study suggests that differences in stomatal density and epidermal cell density in pecans are cultivar specific rather than being determined by environmental factors. The stability of certain leaf anatomic characteristics, such as stomatal and epidermal cell density, for pecan cultivars grown at different locations confirms that these traits can be used for screening provenances with desirable leaf anatomic characteristics for breeding and cultivar development.

scholarly journals Epidermal Cell Density is Autoregulated via a Secretory Peptide, EPIDERMAL PATTERNING FACTOR 2 in Arabidopsis Leaves

2009 ◽  
Vol 50 (6) ◽  
pp. 1019-1031 ◽  
Author(s):  
Kenta Hara ◽  
Toshiya Yokoo ◽  
Ryoko Kajita ◽  
Takaaki Onishi ◽  
Saiko Yahata ◽  
...  
Keyword(s):  
Cell Density ◽  
Epidermal Cell ◽  
Epidermal Patterning

Temporal variations of starch and mass in greenhouse tomato leaves under CO2 enrichment

2011 ◽  
Vol 91 (1) ◽  
pp. 167-177 ◽  
Author(s):  
Diane Edwards ◽  
David Ehret ◽  
Peter Jolliffe
Keyword(s):  
Lycopersicon Esculentum ◽  
Temporal Dynamics ◽  
Unit Area ◽  
Co2 Enrichment ◽  
Temporal Variations ◽  
Plant Response ◽  
Leaf Position ◽  
Monitoring Period ◽  
Greenhouse Tomato ◽  
Diurnal Profile

Edwards, D., Ehret, D. and Jolliffe, P. 2011. Temporal variations of starch and mass in greenhouse tomato leaves under CO2enrichment. Can. J. Plant Sci. 91: 167–177. A plant-based method of guiding CO2 dosing may improve the effectiveness of CO2 enrichment in commercial greenhouse tomato (Lycopersicon esculentum Mill) production. The temporal dynamics of two plant response indicators, leaf starch and leaf mass per unit area (LMA) were investigated in commercial and research greenhouses throughout day/night periods, as well as after the onset of CO2 enrichment. Both leaf starch and LMA tended to follow the diurnal profile of light but with 3 to 4 h of lag. The magnitude of the response, especially for starch, was affected by leaf position, CO2 enrichment and light. The highest starch contents were measured between 1400 and 1600 and the lowest levels occurred in the morning between sunrise and 1100. In many cases plants carried over substantial starch in upper leaves from one day to the next, indicating a carbon-surplus state. In the onset experiment leaf starch and LMA increased with 4 d of exposure to CO2 enrichment for mid and upper canopy leaves and continued to increase to the end of the monitoring period (7 d). Leaf starch contents and LMA are indicators of plant carbon status that show potential for guiding CO2 dosing.

scholarly journals Between-clone, between-leaf and within-leaf variation in leaf epidermis traits in Iris pumila clones

Genetika ◽  
2013 ◽  
Vol 45 (2) ◽  
pp. 297-308
Author(s):  
Danijela Miljkovic ◽  
Stevan Avramov ◽  
Vukica Vujic ◽  
Luka Rubinjoni ◽  
Natasa Klisaric-Barisic ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Cell Density ◽  
Epidermal Cell ◽  
Position Effect ◽  
Leaf Epidermis ◽  
Stomata Density ◽  
Middle Leaf ◽  
Contrast Analysis ◽  
Leaf Variation ◽  
Iris Pumila

The goal of this study was to analyze variation and covariation in epidermal characteristics (epidermal cell density -ECD, stomata density - SD, and stomata index - SI) on Iris pumila clones on between-clone, between-leaf and within-leaf levels. ECD (similar to the pattern previously observed for SD) increased from the base to the top of leaf, while SI remained constant. Results of profile analyses indicated that clones, individual plants whitin clones (ramets), and three successive leaves on the same plant were not significantly different for examined characteristics, but genetic variation for position effect was detected (significant Zone x clone interaction). Results of the contrast analysis confirmed differences between the base and middle leaf positions for ECD (similar to those for SD) as well as between clone variation for those differences. Observed differences between leaf zones and correlations between analyzed traits were mostly consistent with the expansion hypothesis of stomata differentiation.

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