in order to study the genetic diversity as well as the relationships between seed yield and some morphological traits in common white bean, 500 accessions were evaluated in the experimental field of national plant gene bank of iran in 2004 in an augment design of three control varieties. traits were evaluated according to the instruction of ipgri. results of descriptive statistics indicated tha...

In this paper, a novel shape description and matching method based on multi-level curve segment measures (MLCSM) is proposed for plant leaf image retrieval. MLCSM extracts the statistical features of shape contour via measuring the curve bending, convexity and concavity of the curve segments with different length of shape contour to describe the shape. This method not only finely captures the g...

Understanding the assembly rules of mycorrhizal fungi is crucial, given their tremendous importance in plant nutrition and health. Differentiation plant-associated arbuscular (AMF) likely driven by a host-preference effect. Coexisting species may then affect focal microbiota through fungal dispersal among plants, preferential recruitment AMF. Both mechanisms are shaped plant's phylogenetic func...

We investigated the potential use of real-time kinematic (RTK) global positioning system (GPS) to determine seedling distribution and plant growing area mapping by evaluating the obtained level of accuracy. High-accuracy seed and plant growing area mapping can potentially be used in the evaluations of seeding machine performance, weed control, and plant-specific crop management. Actual plant lo...

Recognizing plants is a vital problem especially for biologists, chemists, and environmentalists. Plant recognition can be performed by human experts manually but it is a time consuming and low-efficiency process. Automation of plant recognition is an important process for the fields working with plants. This paper presents an approach for plant recognition using leaf images. Shape and color fe...

The spirally arranged stems of the spikemoss Selaginella lepidophylla, an ancient resurrection plant, compactly curl into a nest-ball shape upon dehydration. Due to its spiral phyllotaxy, older outer stems on the plant interlace and envelope the younger inner stems forming the plant centre. Stem curling is a morphological mechanism that limits photoinhibitory and thermal damages the plant might...

During last two decades studies on endozoochorous seed dispersal indicated that a large numbers of plant seeds are potentially dispersed and suceefully germinated via animal dung. However, very little is known about the relative importance of endozoochory in germination success of plant species in semi-steppe rangelands. In this paper we examined dung germinating seed content, seed deposition p...

During last two decades studies on endozoochorous seed dispersal indicated that a large numbers of plant seeds are potentially dispersed and suceefully germinated via animal dung. However, very little is known about the relative importance of endozoochory in germination success of plant species in semi-steppe rangelands. In this paper we examined dung germinating seed content, seed deposition p...

Plant surfaces showing hierarchical structuring are frequently found in plant organs such as leaves, petals, fruits and stems. In our study we focus on the level of cell shape and on the level of superimposed microstructuring, leading to hierarchical surfaces if both levels are present. While it has been shown that epicuticular wax crystals and cuticular folds strongly reduce insect attachment,...