Results 41 to 50 of about 64,372 (201)
Frontiers in Plant Science, 2021 Petals, the inner organs in a differentiated perianth, generally play an important role in pollinator attraction. As such they exhibit an extraordinary diversity of shapes, sizes, and colors.
Pierre Galipot +5 more
doaj +1 more source
Petal diagram from simple braids [PDF]
arXiv, 2023 We construct petal diagrams from simple braids. This approach allows us to confirm a conjecture proposed by Kim, No and Yoo, which states that the petal number of the nontrivial torus knot $T_{r,s}$ ($r
arxiv
On Structural Parameterizations of Hitting Set: Hitting Paths in Graphs Using 2-SAT [PDF]
, 2015 Hitting Set is a classic problem in combinatorial optimization. Its input consists of a set system F over a finite universe U and an integer t; the question is whether there is a set of t elements that intersects every set in F.
B Aspvall +12 more
core +3 more sources
How to Evolve a Perianth: A Review of Cadastral Mechanisms for Perianth Identity
Frontiers in Plant Science, 2018 The flower of angiosperms is considered to be a major evolutionary innovation that impacted the whole biome. In particular, two properties of the flower are classically linked to its ecological success: bisexuality and a differentiated perianth with ...
Marie Monniaux, Michiel Vandenbussche
doaj +1 more source
Mechanical Faraday effect for orbital angular momentum-carrying beams [PDF]
, 2014 When linearly polarised light is transmitted through a spinning window, the plane of polarisation is rotated. This rotation arises through a phase change that is applied to the circularly polarised states corresponding to the spin angular momentum (SAM).
Aleksandrov +27 more
core +1 more source
Turkish Journal of Agriculture: Food Science and Technology, 2020 In this study which was carried out during the 2015 summer season in Eskişehir, the flower, pod and seed characters attributed to yield components were investigated in 12 forage pea genotypes. They showed significant differences in terms of agronomic and
Süleyman Avcı, Onur İleri, Ali Koç
doaj +1 more source
Evolution of petal identity [PDF]
Journal of Experimental Botany, 2009 Petals appear in many angiosperm taxa, yet when and how these attractive organs originated remains unclear. Phylogenetic reconstructions based on morphological data suggest that petals have evolved multiple times during the radiation of the angiosperms.
openaire +3 more sources
Programmed Cell Death and Postharvest Deterioration of Horticultural Produce [PDF]
, 2010 Programmed cell death (PCD) is a process where cells or tissues are broken down in an orderly and predictable manner, whereby nutrients are re-used by other cells, tissues or plant parts.
Iakimova, E.T., Woltering, E.J.
core +1 more source
Plants, 2021 The lotus (Nelumbo Adans.) is an important aquatic plant with ornamental, medicinal and edible values and cultural connotations. It has single-, semi-double-, double- and thousand-petalled types of flower shape and is an ideal material for developmental ...
Zhuoxing Liu +9 more
doaj +1 more source
Speeds of Convergence for Petals of Semigroups of Holomorphic Functions [PDF]
arXiv, 2023 We study the backward dynamics of one-parameter semigroups of holomorphic self-maps of the unit disk. More specifically, we introduce the speeds of convergence for petals of the semigroup, namely the total, orthogonal, and tangential speeds. These are analogous to speeds of convergence introduced by Bracci, yet profoundly different due to the nature of
arxiv