A New Hybrid Cross, Notropis atherinoides × Notropis volucellus (Pisces: Cyprinidae), from the Lower Monongahela River, Western Pennsylvania

Copeia ◽  
1983 ◽  
Vol 1983 (4) ◽  
pp. 1077 ◽  
Author(s):  
David A. Mayhew
Keyword(s):  
Notropis Volucellus ◽  
Western Pennsylvania ◽  
Notropis Atherinoides ◽  
Monongahela River ◽  
Hybrid Cross

289. Respirator Use Among Western Pennsylvania Surface Miners

1999 ◽  
Author(s):  
S. Franco ◽  
J. Cocalis ◽  
E. Mauger ◽  
K. Stricklin
Keyword(s):  
Western Pennsylvania

Bagworm Survival and Feeding Preferences as Indicators of Resistance among Maples

2002 ◽  
Vol 20 (3) ◽  
pp. 138-142
Author(s):  
William E. Klingeman
Keyword(s):  
Host Plant ◽  
Ornamental Plants ◽  
Larval Feeding ◽  
Eastern United States ◽  
Feeding Preferences ◽  
Survival And Development ◽  
Early Instar ◽  
Moderate Resistance ◽  
Hybrid Cross ◽  
Plant Susceptibility

Abstract The bagworm (Thyridopteryx ephemeraeformis (Haworth)) is a polyphagous, native pest of numerous deciduous and evergreen ornamental plants. Bagworm larvae were used to investigate host plant susceptibility among ten species and cultivars of maples that are economically important and commonly encountered in landscapes in the eastern United States. Data analyses from 48-hour choice assays, conducted in the laboratory during 2000 and 2001, indicated that differences existed among maples for bagworm feeding preferences and host plant susceptibility. Results from the 48-hour trials were not as accurate as seasonal no-choice assays, however. No-choice assays during both seasons quantified resistance among maples that limited larval bagworm survival and development. Measurements of larval feeding injury demonstrated resistance in paperbark maple (Acer griseum (Franch.) Pax) and trident maple (A. buergerianum Miq.) when compared with other maples. Laboratory results were corroborated during 2001 by a no-choice field assay, in which early instar bagworm larvae performed well on the majority of maples. In contrast, paperbark maple and trident maple were resistant to bagworm feeding, while ‘Autumn Blaze’ Freeman maple (A. x freemanii E. Murray), a hybrid cross obtained by breeding A. rubrum with A. saccharinum, showed moderate resistance.

Contextual Essays on the Monongahela River Navigation System. Locks and Dams 2, 3 and 4 Monongahela River Project

2012 ◽  
Author(s):  
Judith A. Heberling ◽  
John J. Kudlik ◽  
Ronald C. Carlisle ◽  
Scott D. Heberling
Keyword(s):  
Navigation System ◽  
Monongahela River

VEGETATIVE AND BUNCH COMPONENTS OF FIRST PSEUDOBACKCROSS OF Elaeis oleifera BRAZIL AND SURINAME ORIGIN IN NORTH SUMATRA, INDONESIA

2018 ◽  
Vol 26 (1) ◽  
pp. 23-28
Author(s):  
Heri Adriwan Siregar ◽  
Hernawan Yuli Rahmadi ◽  
Retno Diah Setiowati ◽  
Edy Suprianto
Keyword(s):  
Interspecific Hybrid ◽  
Plant Architecture ◽  
Elaeis Guineensis ◽  
Morphological Properties ◽  
Height Increment ◽  
Elaeis Oleifera ◽  
Almost All ◽  
North Sumatra ◽  
Two Populations ◽  
Hybrid Cross

An Attempt to combine the superior traits of Elaeis oleifera and Elaeis guineensis have been done through an interspecific hybrid cross and followed by pseudo-backcross 1 (pBC1). Observation of vegetative morphology and bunch components are presented in this paper. Two populations of pBC1 E. oleifera from the Suriname and Brazil origin were planted in 1990, 1993, 1995, and 2005, and were intensively observed for vegetative morphological properties and bunch components in November 2016 to February 2018. The results showed that almost all the individuals of pBC1 grew upright such as E. guineensis, no longer growing horizontally like the wild E. oleifera and the interspecific hybrid populations. The datas showed that the Suriname population plant architecture are compact or smaller than the Brazilian origin including the height increment and the size of the stem, the frond architecture and its components. Similarly, the bunch components show that the pBC1 Brazil is slightly superior to Suriname pBC1.

scholarly journals Changing trends of tobacco use in a teenage population in western Pennsylvania.

1986 ◽  
Vol 76 (2) ◽  
pp. 196-197 ◽  
Author(s):  
J Guggenheimer ◽  
T G Zullo ◽  
D C Kruper ◽  
R S Verbin
Keyword(s):  
Tobacco Use ◽  
Changing Trends ◽  
Western Pennsylvania
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