Results 31 to 40 of about 94,455 (294)

Extraction and discrimination of tobacco leaf shape based on landmark method

open access: yes浙江大学学报. 农业与生命科学版, 2022
The shape information of leaves from 39 tobacco varieties was extracted by using landmark method. The differences in leaf shapes were compared and analyzed among different varieties and different leaf positions at different growth stages.
ZHONG Peige   +6 more
doaj   +1 more source

ANOTHER APPROACH TO LEAF SHAPE COMPARISONS [PDF]

open access: yesTAXON, 1987
SummaryMethods for shape comparisons among groups originally developed in zoological studies are found to be useful in examining variation in leaf shape. These methods (sampling outlines by means of truss networks connecting landmarks or pseudolandmarks, and sheared principal components analysis) take advantage of electronic methods of data capture and
Dickinson, T. A.   +2 more
openaire   +2 more sources

Leaf shape influences the scaling of leaf dry mass vs. area: a test case using bamboos [PDF]

open access: yes, 2020
International audienceContext: The scaling of leaf dry mass vs. leaf area is important for understanding how plants effectively intercept sunlight and invest carbon to do so.
Lin, Shuyan   +6 more
core   +1 more source

Bioinformatic and Biometric Methods in Plant Morphology

open access: yesApplications in Plant Sciences, 2014
Recent advances in microscopy, imaging, and data analyses have permitted both the greater application of quantitative methods and the collection of large data sets that can be used to investigate plant morphology.
Surangi W. Punyasena, Selena Y. Smith
doaj   +1 more source

The Shape of the Edge of a Leaf

open access: yesFoundations of Physics, 2003
15 pages and 6 ...
openaire   +2 more sources

Morphological characteristic, growth behavior, and cultivation of Luffa acutangula in tropical urban ecosystem

open access: yesJournal of Tropical Life Science, 2022
Ridge gourd (Luffa acutangula) is a climbing vegetable that produces edible fruits. Young fruits are harvested when the cotyledons have not yet formed. This study covered morphological characteristics, growth behavior, and cultivation practices suitable ...
Benyamin Lakitan   +2 more
doaj   +1 more source

Leaf Shapes and Venation Patterns [PDF]

open access: yes, 2012
Plant life is fuelled by solar radiation through photosynthesis, by processes in which leaves act as power generators, main factories, and dispensers of organic substances. Leaves store energy in organic compounds (mainly carbohydrates) that are redistributed within the plant system, thus keeping all metabolic and transport processes active and ...
openaire   +2 more sources

Determining the Contribution of Epidermal Cell Shape to Petal Wettability Using Isogenic Antirrhinum Lines

open access: yes, 2011
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are ...
Heather M Whitney   +16 more
core   +1 more source

Investigation of the Static and Dynamic Performance of Leaf Springs under Different Shapes, Leaf Numbers, and Beam Widths

open access: yesJournal of Engineering
This study is related to a new geometrical design of automotive leaf springs that involves substituting the common trapezoidal base and circular shape with a circular base plate and parabolic shape.
Ibtehal Abdul Hussain Bani   +1 more
doaj   +1 more source

Comprehensive Methods for Leaf Geometric Morphometric Analyses

open access: yesBio-Protocol, 2017
Leaf morphometrics are used frequently by several disciplines, including taxonomists, systematists, developmental biologists, morphologists, agronomists, and plant breeders to name just a few. Leaf shape is highly variable and can be used for identifying
Laura Klein, Harlan Svoboda
doaj   +1 more source

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