Do Habitat and Geographic Distribution Influence Decreased Seed Viability in Remnant Populations of a Keystone Bunchgrass?

2014 ◽  
Vol 32 (3) ◽  
pp. 295-305
Author(s):  
H. E. Perez
Keyword(s):  
Geographic Distribution ◽  
Seed Viability

A new species of Contomastix (Squamata, Teiidae) supported by total evidence, with remarks on diagnostic characters defining the genus

2019 ◽  
pp. 23-36
Author(s):  
Mario. R. Cabrera
Keyword(s):  
New Species ◽  
Geographic Distribution ◽  
Phylogenetic Reconstruction ◽  
Total Evidence ◽  
Molecular Evidence ◽  
Proximal Margin ◽  
Diagnostic Characters ◽  
Morphological Differences ◽  
A New Species ◽  
Molecular Characters

Formerly Cnemidophorus was thought to be the most speciose genus of Teiidae. This genus comprised four morphological groups that were later defined as four different genera, Ameivula, Aurivela, Cnemidophorus and Contomastix. The last appears as paraphyletic in a recent phylogenetic reconstruction based on morphology, but monophyletic in a reconstruction using molecular characters. Six species are allocated to Contomastix. One of them, C. lacertoides, having an extensive and disjunct geographic distribution in Argentina, Uruguay and Brazil. Preliminary analyses revealed morphological differences among its populations, suggesting that it is actually a complex of species. Here, we describe a new species corresponding to the Argentinian populations hitherto regarded as C. lacertoides, by integrating morphological and molecular evidence. Furthermore, we demonstrate that the presence of notched proximal margin of the tongue is a character that defines the genus Contomastix.

Methods for rapid determination of pecan (Carya illinoensis) seed viability

2017 ◽  
Vol 45 (2) ◽  
pp. 455-464
Author(s):  
T.T. Xue ◽  
J. Liu ◽  
Y.B. Shen ◽  
G.Q. Liu
Keyword(s):  
Rapid Determination ◽  
Seed Viability ◽  
Carya Illinoensis

Effect of Electromagnetic Radiation and Temperature on Wheat Seed Viability

2002 ◽  
Vol 57 (2-3) ◽  
pp. 7
Author(s):  
N. I. Grigor'eva ◽  
L. M. Chepel ◽  
S. P. Sirenko ◽  
T. M. Cheshko ◽  
V. I. Kiyko
Keyword(s):  
Electromagnetic Radiation ◽  
Seed Viability ◽  
Wheat Seed
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