Results 11 to 20 of about 471,634 (160)
The arithmetic Tutte polynomials of the classical root systems [PDF]
Discrete Mathematics & Theoretical Computer Science, 2014 Many combinatorial and topological invariants of a hyperplane arrangement can be computed in terms of its Tutte polynomial. Similarly, many invariants of a hypertoric arrangement can be computed in terms of its arithmetic Tutte polynomial. We compute the
Federico Ardila +2 more
doaj +1 more source
Frontiers in Plant Science, 2022 High-throughput, field-based characterization of root systems for hundreds of genotypes in thousands of plots is necessary for breeding and identifying loci underlying variation in root traits and their plasticity.
Patrick Woods +7 more
doaj +1 more source
A bijection between noncrossing and nonnesting partitions of types A and B [PDF]
Discrete Mathematics & Theoretical Computer Science, 2009 The total number of noncrossing partitions of type $\Psi$ is the $n$th Catalan number $\frac{1}{ n+1} \binom{2n}{n}$ when $\Psi =A_{n-1}$, and the binomial coefficient $\binom{2n}{n}$ when $\Psi =B_n$, and these numbers coincide with the correspondent ...
Ricardo Mamede
doaj +1 more source
Plant Protection Research Institute
Bothalia: African Biodiversity & Conservation, 1993 A survey of the mycorrhizal status of plants growing in the Cape Floristic Region of South Africa was undertaken to assess the range of mycorrhizal types and their dominance in species characteristic of this region.
N. Allsopp, W. D. Stock
doaj +1 more source
Pesquisa Agropecuária Brasileira, 2002 Dois experimentos em casa de vegetação foram conduzidos visando identificar parâmetros morfológicos ligados à tolerância ao alumínio (Al) e estabelecer a concentração de Al e o tempo de cultivo suficientes para a expressão da tolerância ao Al, em duas ...
Steel Silva Vasconcelos +2 more
doaj +1 more source
Seedling Characteristics of Three Oily Species before and after Root Pruning and Transplant
Plants, 2019 Moringa oleifera Lam. (Moringa), Jatropha curcas L. (Jatropha), and Ricinus communis L. (Ricinus) are oily species known by their capability to grow in tropical and subtropical lands.
Ofelia Andrea Valdés-Rodríguez +1 more
doaj +1 more source
Stability of Stretched Root Systems, Root Posets and Shards [PDF]
The Electronic Journal of Combinatorics, 2021 Inspired by the infinite families of finite and affine root systems, we define a "stretching" operation on general crystallographic root systems which, on the level of Coxeter diagrams, replaces a vertex with a path of unlabeled edges. We embed a root system into its stretched versions using a similar operation on individual roots. For a fixed root, we
openaire +3 more sources
Plants, 2021 Over the last decade, efforts to breed new Cannabis sativa L. cultivars with high Cannabidiol (CBD) and other non-psychoactive cannabinoids with low tetrahydrocannabinol (THC) levels have increased.
Hamza Rafiq +4 more
doaj +1 more source
Enhancing Sustainable Potato Production—A Case Study in Northern China
Agronomy, 2021 Potato is the fourth most important staple crop in China. To meet the increased demand and environmental objectives, potato production should be enhanced by sustainable practices that aim to maximize yield and resource use efficiencies and minimize ...
Na Wang +6 more
doaj +1 more source
Plants, 2015 The study, characterization, observation, and quantification of plant root growth and root systems (Rhizometrics) has been and remains an important area of research in all disciplines of plant science.
Lesley A. Judd +2 more
doaj +1 more source