Results 11 to 20 of about 531,079 (302)
Generalized root systems [PDF]
Transactions of the American Mathematical Society, Series BWe generalize the notion of a root system by relaxing the conditions that ensure that it is invariant under reflections and study the resulting structures, which we call generalized root systems (GRSs). Since both Kostant root systems and root systems of Lie superalgebras are examples of GRSs, studying GRSs provides a uniform axiomatic approach to ...
Dimitrov I., Fioresi R.
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Embeddings of root systems I: Root systems over commutative rings
Journal of Algebra, 2009 The paper under review considers a class of reflection representations of Coxeter groups over commutative unital rings \(R\) and their corresponding root systems. For \(R=\mathbb{R}\), these include the standard (real, reduced) root systems. In general, they also include, for any (unital) subring \(Z\) of \(\mathbb{R}\), certain root systems over ...
Matthew J. Dyer, Dyer, Matthew J.
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Root Systems of Five Clonal Avocado Genotypes
HorticulturaeThe root system of clonal rootstocks has been poorly studied, despite its crucial importance. Roots not only provide support and nutrition to the plant but also contribute to tolerance to pests, diseases and environmental stresses, in addition to ...
Nancy Elena Gonzalez-Florez +4 more
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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
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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
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Modelling diverse root density dynamics and deep nitrogen uptake — a simple approach [PDF]
, 2009 We present a 2-D model for simulation of root density and plant nitrogen (N) uptake for crops grown in agricultural systems, based on a modification of the root density equation originally proposed by Gerwitz and Page in J Appl Ecol 11:773–781, (1974). A
Zhang, Kefeng +4 more
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Growth of ‘M9’ apple root in five Central Europe replanted soils [PDF]
, 2014 Soil sickness is a widespread problem in replanted apple orchards with a complex symptomatology and etiology influenced by soil and climate conditions. Consequently, a conclusive technical solution is still lacking for intensive apple orchards.
Neri, Davide +6 more
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Root photomorphogenesis in laboratory-maintained Arabidopsis seedlings [PDF]
, 2013 In nature, root systems of most terrestrial plants are underground in darkness. Nevertheless, several photoreceptors have been found in roots and light-responsive mechanisms allowing roots to escape from strong light conditions have been discovered.
Baluška, František +2 more
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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
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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
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