منابع مشابه
Recurrent Novae , Classical Novae , Symbiotic Novae , and Population II
Light curve analysis of decay phase of nova outburst are summarized. Nova duration is determined by the strong wind mass-loss which depends only on the white dwarf mass. Fast novae correspond very massive white dwarfs and very slow novae correspond almost lower mass limit of white dwarfs. This relation is shown in both of classical novae and recurrent novae. Light curves are theoretically repro...
متن کاملArtificial and Natural Hybrids in the Gramineae, Tribe Hordeae. VII. Hybrids and Allopolyploids between Elymus Glaucus and Sitanion Spp.
N the first paper of this series (STEBBINS, VALENCIA and VALENCIA I 1946a) two different natural hybrids between Elymus glaucus and Sitanion jubatum were described. Both were intermediate between their parents and were completely sterile. They nevertheless had essentially normal meiosis, with the chromosomes forming 14 bivalents or occasionally 13 bivalents and 2 univalents at first metaphase. ...
متن کاملCompositional gradients in Gramineae genes.
In this study, we describe a property of Gramineae genes, and perhaps all monocot genes, that is not observed in eudicot genes. Along the direction of transcription, beginning at the junction of the 5'-UTR and the coding region, there are gradients in GC content, codon usage, and amino-acid usage. The magnitudes of these gradients are large enough to hinder the annotation of the rice genome and...
متن کاملFunctional-structural Modelling of Gramineae
The Gramineae have been a pioneer group among non-woody plants to be modelled with the approach of functional-structural plant modelling (FSPM). During the past decade, models have focussed on morphological aspects of plant development. They now provide crop scientists with general guidelines for building new cereal models. We present some of them here, considering the different aspects of cere...
متن کاملIsoenzymatic Variation in Zea (Gramineae)
An average of 14(7-34) plants each for 61 different collections of Zea (maize and its wild relatives, the teosintes) were studied for 12 enzyme systems coded for by 21 loci. Principal component and cluster analyses based on allele frequencies showed Zea can be divided into two major groups: 1) sect. Luxuriantes, including Z. perennis, Z. diploperennis, and Z. luxurians; and 2) sect. Zea (in par...
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ژورنال
عنوان ژورنال: Repertorium novarum specierum regni vegetabilis
سال: 1910
ISSN: 0375-121X
DOI: 10.1002/fedr.19100083205