Leaf shape and its relationship with Leaf Area Index in a sugar beet (<Emphasis Type="Italic">Beta vulgaris</Emphasis> L.) cultivar |
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Authors: | J T Tsialtas N Maslaris |
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Institution: | (1) Hellenic Sugar Industry SA, Greece;(2) Department of Experimentation, Larissa factory, 411 10 Larissa, Hellas;(3) Agronomic Research Service, 547 00 Sindos, Hellas;(4) Present address: Cotton and Industrial Plants Institute, NAGREF, 574 00 Sindos, Hellas |
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Abstract: | 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.
An erratum to this article is available at . |
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Keywords: | leaf area leaf length leaf width morphology non-destructive methods |
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