scholarly journals Characterization of Root-Knot Nematode Populations Associated with Vegetables in New York State

Plant Disease ◽  
2002 ◽  
Vol 86 (8) ◽  
pp. 840-847 ◽  
Author(s):  
N. A. Mitkowski ◽  
J. G. Van der Beek ◽  
G. S. Abawi
Keyword(s):  
New York ◽  
Host Range ◽  
New York State ◽  
Nematode Species ◽  
Meloidogyne Hapla ◽  
Root Knot Nematode ◽  
Internal Transcribed Spacer Region ◽  
York State ◽  
The North ◽  
Significant Damage

The northern root-knot nematode (Meloidogyne hapla) causes significant damage on vegetables in New York State. This study was conducted to determine if other species of Meloidogyne are also present in New York vegetable fields and to better characterize the root-knot populations in order to facilitate the development of effective rotations for nematode management. Populations of Meloidogyne were collected from 18 vegetable fields across New York and maintained in the greenhouse on tomato cv. Rutgers as both field populations and single-female populations. For the purposes of species identification, nematodes from each population were examined using perineal pattern analysis, scanning electron microscopy, and cytological analysis. All techniques identified the presence of only Meloidogyne hapla in the collected samples. The host range of the populations of Meloidogyne that were collected was investigated using a modified form of the North Carolina Differential Host Test. While host ranges were variable among the collected populations, the host range of all populations closely corresponded to that of M. hapla. The internal transcribed spacer region (ITS1) of the collected populations was amplified and sequenced. All sequences from the collected populations corresponded to the published sequence of M. hapla. Based on these results, it was concluded that M. hapla is the only root-knot nematode species present in New York vegetable fields. Crop rotational strategies for management of the root-knot nematode on vegetables in New York should be devised to reflect this fact.

A study in the tornoceratidae: the succession of tornoceras and related genera in the North American devonian

1965 ◽  
Vol 250 (763) ◽  
pp. 79-130 ◽  
Keyword(s):  
New York ◽  
New Species ◽  
New York State ◽  
Lateral Lobe ◽  
Evolutionary Trends ◽  
York State ◽  
The North ◽  
New Subgenus ◽  
Lower Frasnian ◽  
Shed Light

The species of Tornoceras , Parodiceras , Epitornoceras and Aulatornoceras in North America are described. The study provides an independent stratigraphical goniatite zonation, particularly for the New York State Devonian, and it also provides an analysis of allomorphis in Tornoceras . A discussion on the protoconch apparatus and the significance of the metamorphosis at the nepionic constriction in Tornoceras is given. For the Tornoceras stock descriptions are provided where possible of the ontogeny from protoconch to adult of species at eleven successive stratigraphical levels, and faunas at other levels are also described. Thus the successional ontogenies shed light on the phylogeny of the stock. Faunas at each level may be morphologically defined, but few consistently maintained evolutionary trends have been observed. Shell form seems particularly subject to independent, and probably phenotypic variation. Through the equivalents of the Middle Devonian to the lower Frasnian, protoconch width appears to increase progressively. Similarly the suture becomes more undulating, particularly with regard to the steepness of the ventrad face of the lateral lobe. Later species show reversion to early characters in these respects. The origin of Tornoceras from Parodiceras is argued, and it is considered that Tornoceras gave rise to all later members of the Tornoceratidae. A new subgenus, Linguatornoceras , is erected for Frasnian and lower Famennian tornoceratids with small lingulate lateral lobes. Seven new species and subspecies are described.

scholarly journals Age and origin of the Cannon Point syenite, Essex County, New York: southernmost expression of Monteregian Hills magmatism?

2017 ◽  
Vol 54 (4) ◽  
pp. 379-392
Author(s):  
David G. Bailey ◽  
Marian Lupulescu ◽  
Jeffrey Chiarenzelli ◽  
Jonathan P. Traylor
Keyword(s):  
New York ◽  
New York State ◽  
Alkali Feldspar ◽  
Crustal Material ◽  
Lake Champlain ◽  
Essex County ◽  
York State ◽  
Fine Grained ◽  
The North ◽  
Basement Faults

Two syenite sills intrude the local Paleozoic strata of eastern New York State and are exposed along the western shore of Lake Champlain. The sills are fine-grained, alkali feldspar syenites and quartz syenites, with phenocrysts of sanidine and albite. The two sills are compositionally distinct, with crossing rare earth element profiles and different incompatible element ratios, which eliminates the possibility of a simple petrogenetic relationship. Zircon extracted from the upper sill yields a U–Pb age of 131.1 ± 1.7 Ma, making the sills the youngest known igneous rocks in New York State. This age is similar to that of the earliest intrusions in the Monteregian Hills of Quebec, >100 km to the north. Sr and Nd radiogenic isotope ratios are also similar to those observed in some of the syenitic rocks of the eastern Monteregian Hills. The Cannon Point syenites have compositions typical of A-type, within-plate granitoids. They exhibit unusually high Ta and Nb concentrations, resulting in distinct trace element signatures that are similar to those of the silicic rocks of the Valles Caldera, a large, rift-related magmatic system. We suggest that the Cannon Point syenites were melts derived primarily by anatexis of old, primitive, lower crustal material in response to Mesozoic rifting and to the intrusion of mantle-derived magmas. The sills indicate that the effects of continental rifting were spatially and temporally extensive, resulting in the reactivation of basement faults in the Lake Champlain Valley hundreds of kilometers west of the active rift boundary, and crustal melting >50 Ma after the initiation of rifting.

scholarly journals Host Status of Lisianthus `Mariachi Lime Green' for Three Species of Root-knot Nematodes

HortScience ◽  
2004 ◽  
Vol 39 (1) ◽  
pp. 120-123 ◽  
Author(s):  
Martin Schochow ◽  
Steven A. Tjosvold ◽  
Antoon T. Ploeg
Keyword(s):  
Nematode Species ◽  
Meloidogyne Hapla ◽  
Cut Flower ◽  
Root Knot Nematode ◽  
Eustoma Grandiflorum ◽  
Root Knot Nematodes ◽  
Tomato Plants ◽  
Flower Production ◽  
Significant Damage ◽  
Host Status

Lisianthus [Eustoma grandiflorum (Raf.) Shinn.] plants were grown in soil infested with increasing densities of Meloidogyne hapla Chitwood, M. incognita (Kofoid & White) Chitwood, or M. javanica (Treub) Chitwood, root-knot nematodes. Compared to tomato plants grown in soil with the same nematode numbers and species, lisianthus had less severe root symptoms, suffered less damage, and resulted in lower nematode multiplication rates. Lisianthus was a better host for M. javanica than for M. incognita, and a poor host for M. hapla. Lisianthus shoot weights were significantly reduced after inoculation with M. javanica or M. hapla, but not after M. incognita inoculation. The number of flowers produced per lisianthus plant was reduced by all three nematode species. The results show that the root-knot nematode species that are most common in California may cause significant damage in the cut-flower production of lisianthus.

Introduction

2021 ◽  
pp. 1-9
Author(s):  
Laura Warren Hill
Keyword(s):  
New York ◽  
Political Economy ◽  
Civil Rights ◽  
Civil Rights Movement ◽  
Jim Crow ◽  
New York State ◽  
Political Mobilization ◽  
York State ◽  
The North ◽  
North And South

This chapter provides a background to the story of transformations brought by the rebellion of the Black community that happened first in Harlem, New York and then in Rochester on July 4, 1964. It points out that the rebellions in Rochester and Harlem shared a common spark: police brutality and misconduct. It also explains how the twin rebellions in New York State in 1964 were a foretaste of the Southern-based civil rights movement, which gave way to a different kind of Black political mobilization that centered largely in the urban North. The chapter reviews the consequences of the civil rights movement that dismantled Jim Crow as a system of legalized racism in the North and South. It emphasizes that the new Black political mobilization, which built on the energy arising from the rebellions and fashioning theories of a Black political economy, sought to address the structures of socioeconomic marginalization and impoverishment that survived the legal dismantling of Jim Crow.

Connecting the North Country: An Information Infrastructure for Manufacturing in Rural New York State

2013 ◽  
Author(s):  
Jonathan R. Slater
Keyword(s):  
New York ◽  
New York State ◽  
Information Infrastructure ◽  
Information Industry ◽  
York State ◽  
The North ◽  
Mcgill University

From the 1994 CAIS Conference: The Information Industry in Transition McGill University, Montreal, Quebec. May 25 - 27, 1994.No abstract available

THE THREE RANATRAS OF THE NORTH-EASTERN UNITED STATES

1905 ◽  
Vol 37 (5) ◽  
pp. 187-188
Author(s):  
J. R. De La Torre Bueno
Keyword(s):  
United States ◽  
New York ◽  
New York State ◽  
Eastern United States ◽  
York State ◽  
The North ◽  
North Eastern ◽  
First Time

Several entomologists have discussed with me the question of the distinguishing characters of Ranatra quadridentata, Stal, and Ranatra fusca, Pal. Beauv., and in consequence I venture to set forth here briefly and plainly the differences between these two and Ranatra kirkaldyi, n. sp, which I took for the first time in New York State.

Reproductive fitness on lettuce of populations of Meloidogyne hapla from New York State vegetable fields

Nematology ◽  
2003 ◽  
Vol 5 (1) ◽  
pp. 77-83 ◽  
Author(s):  
Nathaniel Mitkowski ◽  
George Abawi
Keyword(s):  
New York ◽  
Genetic Factors ◽  
New York State ◽  
Reproductive Fitness ◽  
Screening Tests ◽  
Egg Mass ◽  
Breeding Line ◽  
Meloidogyne Hapla ◽  
York State ◽  
Germplasm Screening

AbstractSix New York State populations of Meloidogyne hapla differed in their reproductive fitness and severity of galling induced on lettuce (Lactuca sativa) cvs Ithaca, Salinas, and Montello and the breeding line 41-595. Both lettuce germplasm and nematode population had a significant effect on reproductive fitness and the interaction between germplasm and population was also significant. Differences in the number of nematodes recovered per g of root was attributable to differences in numbers of eggs per egg mass. Results suggested that there are separate genetic factors controlling reproduction and galling on lettuce. Based on this study, it would be prudent to include multiple, local populations of M. hapla in future resistance germplasm screening tests.

Uplift of the Tug Hill Plateau in northern New York State

2010 ◽  
Vol 47 (8) ◽  
pp. 1055-1077 ◽  
Author(s):  
J. L. Wallach ◽  
M. Rheault
Keyword(s):  
New York ◽  
Shear Zone ◽  
New York State ◽  
Upper Ordovician ◽  
Northern Limit ◽  
York State ◽  
The North ◽  
Plateau Uplift ◽  
Passive Response ◽  
Tectonic Boundary

The Tug Hill Plateau is a roughly elliptical-shaped area located in northern New York State that rises above the adjacent landscape and is underlain predominantly by Middle to Upper Ordovician strata. Its elevated character is interpreted as a passive response to the tectonic uplift of the adjacent Precambrian basement located to the east and northeast of the plateau. Uplift of the basement is also inferred to have resulted in the strata on the plateau and in the topographically lower terrain to the north dipping gently towards the southwest. Tilting of the plateau was probably facilitated by rotation along the newly recognized regionally extensive Black River fault, which separates the plateau from the uplifted basement and marks the plateau’s east-northeastern limit. The northern limit of the plateau, accentuated by a pronounced escarpment, is aligned with the northeast-trending Carthage–Colton shear zone, a major Precambrian tectonic boundary. Uplift of the Adirondack Highlands and Tug Hill Plateau, relative to their counterparts northwest of the shear zone, is believed to have been enabled by reactivation of the Carthage–Colton shear zone.

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