Photosynthetica, 2007 (vol. 45), issue 4

Photosynthetica 2007, 45(4):527-532 | DOI: 10.1007/s11099-007-0090-5

Leaf shape and its relationship with Leaf Area Index in a sugar beet (Beta vulgaris L.) cultivar

J. T. Tsialtas2,1,*, N. Maslaris3,1
1 Hellenic Sugar Industry SA, Greece
2 Department of Experimentation, Larissa factory, Larissa, Hellas
3 Agronomic Research Service, Sindos, Hellas

Heteroblasty of sugar beet cultivar Rizor was studied under field conditions for three growing seasons (2003, 2005, 2006) in a Randomized Complete Block (RCB) design experiment. Eleven leaf samplings, from early June till the end of October, were conducted each year and leaf shape parameters [leaf area (LA), centroid X or Y (CX or CY), length (L), width (W), average radial (AR), elongation (EL), shape factor (SF)] were determined by an image analysis system. During samplings, Leaf Area Index (LAI) was measured non-destructively. Significant year and sampling effects were found for all traits determined. With the progress of the growing season, leaves became smaller (LA, L, W, and AR were decreased) and rounded. The largest leaves were sampled in 2006 when LAI was highest. LA was strongly correlated with L and W with simple functions (y = 0.1933 x2.2238, r 2 = 0.96, p<0.001, and y = 28.693 x - 192.33, r 2 = 0.97, p< 0.001, respectively), which could be used for non-destructive LA determination. Also, LAI was significantly related with LA and leaf dimensions (L, W) suggesting that an easy, non-destructive determination of LAI under field conditions is feasible for sugar beet cv. Rizor.

Keywords: leaf area; leaf length; leaf width; morphology; non-destructive methods

Received: January 15, 2007; Accepted: May 2, 2007; Published: December 1, 2007Show citation

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Tsialtas, J.T., & Maslaris, N. (2007). Leaf shape and its relationship with Leaf Area Index in a sugar beet (Beta vulgaris L.) cultivar. Photosynthetica, 45(4), 527-532. doi: 10.1007/s11099-007-0090-5.
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