نتایج جستجو برای: keywordselm leaf beetlenutritional indicesintermediary metabolismhost plant

تعداد نتایج: 451589  

2016
Fang Lan Li Xin Liu Wei kai Bao

Leaf life span and plant phenology are central elements in strategies for plant carbon gain and nutrient conservation. Although few studies have found that leaf life span correlate with the patterns of leaf dynamics and reproductive output, but there have not been sufficient conclusive tests for relationships between leaf life span and plant phenological traits, the forms and strengths of such ...

2011
Juan Humberto Sossa Azuela Alexander Gelbukh Sulema Torres Itzamá López

Plant recognition is an important and challenging task. Leaf recognition plays an important role in plant recognition and its key issue lies in whether selected features are stable and have good ability to discriminate different kinds of leaves. From the view of plant leaf morphology (such as shape, dent, margin, vein and so on), domain–related visual features of plant leaf are analyzed and ext...

This experiment was designed for easy and accurate estimation of corn plant leaf area with multilayer perceptron (MLP) neural network and conducted at Faculty of Agricultural Sciences, University of Guilan, Rasht, Iran in 2013. Three plant densities (75, 85 and 95 thousand plants/ha) and five genotypes (Persia 454, 484, 565, 626 and 647) were considered as treatments. Samplings were conducted a...

2017
Svata M. Louda

The impact of a native, leaf-feeding chrysomelid beetle (Phaedon sp. nr. oviformis) on bittercress (Cardamine cordifolia: Cruciferae), was evaluated in an exclusion experiment. Multivariate statistical analysis showed a significant increase in plant performance in the rotenone exclusion compared to performance in the paired control treatment. Plant response to the reduction of herbivory was a c...

2006
Francisco A. Brito Morgana L.F. Freire

We model a plant leaf by using two-dimensional domain walls with internal structures. Such domain walls can be found as soliton solutions in field theory describing magnetic materials. The radiation scattered by such domain walls behaves quite similar to the spectral reflectance of plant leaves. The model nicely simulates the spectral reflectance of a plant leaf as a function of the wavelength....

2017
Manisha M. Amlekar Ashok T. Gaikwad

Plant classification becomes very much demanding research area for the use of taxonomist and botanist as well as in agricultural requirement. Using computerized techniques for performing these task is more effective. This research paper presents the classification of plants by using Feed forward Back Propagation Neural Network designed.This method performed in three steps first is leaf image pr...

2006
Qingfeng Wu Changle Zhou Chaonan Wang

Plant recognition is an important and challenging task. Leaf recognition plays an important role in plant recognition and its key issue lies in whether selected features are stable and have good ability to discriminate different kinds of leaves. From the view of plant leaf morphology (such as shape, dent, margin, vein and so on), domain–related visual features of plant leaf are analyzed and ext...

2013
En-Rong Yan Xiao-Dong Yang Scott X. Chang Xi-Hua Wang

Understanding how plant trait-species abundance relationships change with a range of single and multivariate environmental properties is crucial for explaining species abundance and rarity. In this study, the abundance of 94 woody plant species was examined and related to 15 plant leaf and wood traits at both local and landscape scales involving 31 plots in subtropical forests in eastern China....

2003
Thomas Gerik Brent Bean Richard Vanderlip

rounded leaf tip. The leaf collar marks the junction of the leaf blade and sheath and appears when the leaf is fully developed. Each leaf sheath originates at its own node on the plant stalk. The sheath surrounds and strengthens the stalk (culm). The flag leaf is the last to emerge on the plant and is considerably smaller than the other leaves. The panicle (head) emerges from the flag leaf shea...

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