Results 31 to 40 of about 2,193 (173)

Performance and Variation of White Maize Inbred Lines Developed from Different Sources for Yield and Drought Tolerance [PDF]

open access: yesJournal of Plant Production, 2020
Fifty S1, S2 and S3 white maize lines were extracted and developed from five open different populations for searching of new maize inbreds that tolerate drought accompanied with distinct performance as heterotic groups.
A. Tantawy   +4 more
doaj   +1 more source

Genetic diversity and population structure of early and extra-early maturing maize germplasm adapted to sub-Saharan Africa

open access: yesBMC Plant Biology, 2021
Background Assessment and effective utilization of genetic diversity in breeding programs is crucial for sustainable genetic improvement and rapid adaptation to changing breeding objectives. During the past two decades, the commercialization of the early
Baffour Badu-Apraku   +5 more
doaj   +1 more source

Parental Expression Variation of Small RNAs Is Negatively Correlated with Grain Yield Heterosis in a Maize Breeding Population

open access: yesFrontiers in Plant Science, 2018
Heterosis refers to a quantitative phenomenon in which F1 hybrid trait values exceed the mean of the parental values in a positive direction. Generally, it is dependent on a high degree of heterozygosity, which is maintained in hybrid breeding by ...
Felix Seifert   +10 more
doaj   +1 more source

Selection of Sweetpotato Parental Genotypes Using Simple Sequence Repeat Markers

open access: yesPlants, 2022
Knowledge of the genetic diversity and genetic relationship is important in crop improvement. The objective of this study was to determine the genetic diversity of 31 sweetpotato genotypes and furthermore to select distantly related individuals for ...
Sonia I. M. Naidoo   +4 more
doaj   +1 more source

Duality symmetry group of two dimensional heterotic string theory [PDF]

open access: yesNuclear Physics B, 1995
The equations of motion of the massless sector of the two dimensional string theory, obtained by compactifying the heterotic string theory on an eight dimensional torus, is known to have an affine o(8,24) symmetry algebra generating an O(8,24) loop group.
openaire   +3 more sources

Nongeometric heterotic strings and dual F-theory with enhanced gauge groups

open access: yesJournal of High Energy Physics, 2019
Eight-dimensional nongeometric heterotic strings were constructed as duals of F-theory on Λ1,1 ⊕ E 8 ⊕ E 7 lattice polarized K3 surfaces by Malmendier and Morrison. We study the structure of the moduli space of this construction. There are special points
Yusuke Kimura
doaj   +1 more source

Compact, singular G 2-holonomy manifolds and M/heterotic/F-theory duality

open access: yesJournal of High Energy Physics, 2018
We study the duality between M-theory on compact holonomy G 2-manifolds and the heterotic string on Calabi-Yau three-folds. The duality is studied for K3-fibered G 2-manifolds, called twisted connected sums, which lend themselves to an application of ...
Andreas P. Braun, Sakura Schäfer-Nameki
doaj   +1 more source

Prediction of additive, epistatic, and dominance effects using models accounting for incomplete inbreeding in parental lines of hybrid rye and sugar beet

open access: yesFrontiers in Plant Science, 2023
Genomic models for prediction of additive and non-additive effects within and across different heterotic groups are lacking for breeding of hybrid crops. In this study, genomic prediction models accounting for incomplete inbreeding in parental lines from
Peter Skov Kristensen   +12 more
doaj   +1 more source

Twisting toroidally compactified heterotic strings with enlarged symmetry groups

open access: yesPhysics Letters B, 1986
In toroidal compactification of string theory, enlarged symmetry groups arise at special radii of the compactified dimensions. Here an orbifold-like construction is considered in which the degrees of freedom describing the compact spatial dimensions are twisted by symmetries which exist only for special values of the radius. Constraints on the possible
Mark MUELLER, Edward WITTEN
openaire   +1 more source

Heterotic Patterns of Temperate and Tropical Maize by Ear Photometry

open access: yesFrontiers in Plant Science, 2021
As the plant variety protection (PVP) of commercial inbred lines expire, public breeding programs gain a wealth of genetic materials that have undergone many years of intense selection; however, the value of these inbred lines is only fully realized when
Seth A. Tolley   +3 more
doaj   +1 more source

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