THE IDENTITY OF A SEED-BORNE MOSAIC VIRUS OF CHENOPODIUM AMARANTICOLOR AND C. QUINOA

1967 ◽  
Vol 45 (8) ◽  
pp. 1285-1295 ◽  
Author(s):  
Humberto F. Dias ◽  
Howard E. Waterworth
Keyword(s):  
Mosaic Virus ◽  
Environmental Conditions ◽  
Chemical Properties ◽  
Latent Virus ◽  
Mottle Virus ◽  
Chenopodium Amaranticolor ◽  
Physico Chemical ◽  
The Usa ◽  
Systemic Symptoms ◽  
Erratic Behavior

Seedlings of Chenopodium amaranticolor and C. quinoa were found to contain a highly infectious, seed-borne virus that may remain latent. Under certain environmental conditions and following abrasion of the leaves with carborundum and water, infected, symptomless young plants develop visible systemic symptoms. The presence and erratic behavior of the virus in these species can lead to erroneous identification of the causal agent of diseases of other crops. The virus is restricted to the Chenopodiaceae and is similar to Chenopodium mosaic virus (= sowbane mosaic virus) in morphology and in physico-chemical properties. It is serologically related to Chenopodium star mottle virus, to a latent virus isolated from apple in the USA and, by inference, to Chenopodium mosaic virus.

Effect of Aging on the Physico Chemical Properties of Glass Fiber under Different Environmental Conditions

2008 ◽  
Vol 55 (2) ◽  
pp. 307-310 ◽  
Author(s):  
Muzzaffar Khan ◽  
Gul Akhtar ◽  
Arshad Saeed ◽  
Najeeb Ullah ◽  
Imtiaz Ahmad
Keyword(s):  
Glass Fiber ◽  
Environmental Conditions ◽  
Chemical Properties ◽  
Physico Chemical

scholarly journals Purification, serology and physico-chemical properties of a peanut mottle virus isolate from India

1983 ◽  
Vol 32 (2) ◽  
pp. 197-205 ◽  
Author(s):  
R. RAJESHWARI ◽  
N. IIZUKA ◽  
B. L. NOLT ◽  
D. V. R. REDDY
Keyword(s):  
Virus Isolate ◽  
Chemical Properties ◽  
Mottle Virus ◽  
Physico Chemical

scholarly journals First Report on Pea Seed-borne Mosaic Virus in Hungary

2021 ◽  
Vol 55 (2) ◽  
pp. 161-166
Author(s):  
A. Almási ◽  
R. Boros ◽  
K. Salánki ◽  
B. Barna
Keyword(s):  
Phylogenetic Analysis ◽  
Mosaic Virus ◽  
Universal Primers ◽  
Chenopodium Amaranticolor ◽  
Virus Sequence ◽  
Pea Seeds ◽  
Systemic Symptoms ◽  
Cluster 2 ◽  
Pea Seed

One of the most important diseases of pea is caused by Pea seed-borne mosaic virus (PSbMV), which has a relatively wide host range. Since there are few varieties with resistance against the virus, and spraying insecticides is not very effective, the determination of the disease and the pathogen in the seeds is very important. Inoculum prepared from pea seeds showing typical virus symptoms caused very mild symptoms on Chenopodium amaranticolor and C. quinoa, but several chlorotic/necrotic lesions on bean (Phaseolus vulgaris) cv. Scarlet, and systemic symptoms with mosaic and curling of top leaves on bean cv. Maxidor. The detection of the virus was carried out by PCR using universal primers and virus sequence analysis. According to the phylogenetic analysis the PSbMV isolate identified in Hungary belongs to the pathotype P1 and associated with the cluster 2 isolates.

scholarly journals Organic and non-organic mulches – impact on environmental conditions, yield, and quality of Cucurbitaceae

2019 ◽  
Vol 31 (1) ◽  
pp. 129-145 ◽  
Author(s):  
Piotr Bucki ◽  
Piotr Siwek
Keyword(s):  
Environmental Conditions ◽  
Large Scale ◽  
Chemical Properties ◽  
Scale Production ◽  
Current State ◽  
Large Scale Production ◽  
Organic Mineral ◽  
Physico Chemical ◽  
Weed Infestation ◽  
Physical And Chemical

AbstractThe publication presents the current state of knowledge regarding the importance of mulching in the cultivation of Cucurbitaceae (cucurbit, or gourd family) vegetables. The intensifying climate change – mainly decreasing rainfall – combined with large-scale production of cucurbit vegetables worldwide prompt the application of methods that reduce evaporation and weed infestation. One of the widespread methods is mulching of the soil. The most important advantages of this treatment include the efficient use of water, the reduction in soil erosion and in the leaching of nutrients to the deeper layers. In addition, mulching improves the physical and chemical properties of the soil, and positively affects the surrounding microclimate of the plant. The report includes descriptions of the characteristics of various types of organic, mineral and synthetic mulches used. The results of studies on the environmental conditions forming in mulched soil are presented. Also, the results of research into the physico-chemical properties of mulch-covered soil are collated. The effect of mulching on cucurbit vegetables was evaluated in terms of plant growth and development as well as fruit yield and its biological value. The monograph also deals with the effect of mulching on weed infestation, as well as the occurrence of harmful and beneficial organisms.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

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