A HOMOTHALLIC, SHORT-CYCLE STRAIN OF UROMYCES POLYGONI (PERS.) FUCKEL

1948 ◽  
Vol 26c (2) ◽  
pp. 140-142
Author(s):  
A. M. Brown
Keyword(s):  
Short Cycle ◽  
Polygonum Aviculare

A strain of Uromyces Polygoni (Pers.) Fuckel collected on Polygonum aviculare L. at Winnipeg was found to be homothallic. Attempts to infect P. erectum L. and P. neglectum Besser with sporidia, aeciospores, and urediospores of this rust were unsuccessful. Of the sporidial infections on P. aviculare, whether originating from a single sporidium or from two or more sporidia, most produced aecia only, but some produced uredia only, and a few produced aecia and uredia in association. Pycnia were not visible in any of the sporidial infections when examined with a hand lens but, in microtome sections cut from infections that had developed aecia, a few pycnia containing pycniospores were observed. No flexuous hyphae and periphyses were seen in these pycnia.

scholarly journals Postemergence Polygonum aviculare control in Cynodon dactylon turf

itsrj ◽  
2021 ◽  
Author(s):  
Whitnee L. B. Askew ◽  
John B. Willis ◽  
Josh B. Beam ◽  
Katelyn A. Venner ◽  
Clebson G. Gonçalves ◽  
...  
Keyword(s):  
Cynodon Dactylon ◽  
Polygonum Aviculare

Technology of secondary purification by means of short-cycle unheated adsorption

1995 ◽  
Vol 31 (2) ◽  
pp. 123-124
Author(s):  
S. A. Sirotin ◽  
B. G. Berto
Keyword(s):  
Short Cycle

Short-cycle higher education and the pitfalls of collective action

Minerva ◽  
1976 ◽  
Vol 14 (1) ◽  
pp. 33-60 ◽  
Author(s):  
Raymond Boudon ◽  
Philippe Cibois ◽  
Janina Lagneau
Keyword(s):  
Higher Education ◽  
Collective Action ◽  
Short Cycle

Phenological development and seasonal distribution of the rutherglen bug, Nnysius vinitor Bergroth (Hemiptera: Lygaeidae), on various hosts in Victoria, south-eastern Australia

1988 ◽  
Vol 78 (4) ◽  
pp. 673-682 ◽  
Author(s):  
Garrick McDonald ◽  
A. Mark Smith
Keyword(s):  
Rapid Development ◽  
Early Spring ◽  
Common Source ◽  
Body Temperatures ◽  
Ambient Temperatures ◽  
Polygonum Aviculare ◽  
Developmental Thresholds ◽  
Eastern Australia ◽  
Weed Hosts ◽  
Maximum Temperatures

AbstractPopulations of Nysius vinitor Bergroth were studied from 1979 to 1982 in two weed hosts, Arctotheca calendula and Polygonum aviculare, and eight irrigated sunflower crops in a summer cropping area of northern Victoria, Australia. The spring generation began with the adults colonizing flowering A.calendula plants in September and concluded with the rapid development of late stage nymphs and an exodus of adults from these plants from mid-November to December. Gradual invasion of sunflowers occurred mostly in late December and reached a peak at flowering, after which nymphs appeared. P. aviculare attracted adults from February and hosted a number of overlapping generations until winter. The weed sustained diminishing numbers of adults through the winter, except in 1982, when a further generation produced an early spring peak. Immigrant populations were regarded as a common source of adults for initiating the spring and summer generations. The rate of development of N. vinitor in spring was more rapid than that predicted by phenological simulation based on ambient temperatures and laboratory-derived day-degree estimates. This was attributed to increased body temperatures through absorption of solar radiation, and the simulation model was adjusted by increasing daily minimum and maximum temperatures by 1·3 and 5·5°C for young and older instars, respectively. This suggested that older nymphs have lower developmental thresholds or are better able to optimize body temperatures.

ChemInform Abstract: The Flavonoids from Polygonum aviculare.

ChemInform ◽  
2010 ◽  
Vol 33 (41) ◽  
pp. no-no
Author(s):  
Liping Sun ◽  
Shangzhen Zheng ◽  
Jinxin Wang ◽  
Xuwei Shen ◽  
Xudong Zheng
Keyword(s):  
Polygonum Aviculare

Genetic diversity and morphological variability in Polygonum aviculare s.l. (Polygonaceae) of Iran

Phytotaxa ◽  
2015 ◽  
Vol 233 (2) ◽  
pp. 166 ◽  
Author(s):  
Samaneh Mosaferi ◽  
Masoud Sheidai ◽  
Maryam Keshavarzi ◽  
Zahra Noormohammdai
Keyword(s):  
Morphological Variability ◽  
Genetic Data ◽  
Mantel Test ◽  
Gene Exchange ◽  
Consensus Tree ◽  
Polygonum Aviculare ◽  
Molecular Investigation ◽  
Variable Species ◽  
Issr Molecular Markers ◽  
Positive Significant Correlation

A molecular investigation was carried out on the variable species Polygonum aviculare using 109 plants from 12 Iranian populations. ISSR molecular markers were used for genetic study. AMOVA and Gst analyses revealed a high genetic variability both within and among populations. Mantel test showed positive significant correlation between genetic and geographical distance of populations. Structure and K-Means clustering revealed stratification ingenetic characteristics of accessions. Networking and reticulation analyses showed some degree of gene exchange among populations. Consensus tree based on morphological and genetic data separated some of these populations from the others suggesting the existence of new taxa within this species.

Core-shell structured S@CuO/δ-MnO2 composites as cathodes for lithium-sulfur batteries

CrystEngComm ◽  
2021 ◽  
Author(s):  
Guiying Xu ◽  
Yongying Li ◽  
Hui Cheng ◽  
Guan Liu ◽  
Ziyang Yang ◽  
...  
Keyword(s):  
Coulombic Efficiency ◽  
Cycle Life ◽  
Core Shell ◽  
Practical Application ◽  
Short Cycle ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
Capacity Decay

The dissolution of polysulfides (LiPSs) always leads to low Coulombic efficiency, dramatic capacity decay, and short cycle life, which hinders the practical application of lithium-sulfur (Li-S) batteries. In this study,...

Parametric Study on Separation Performance of Air Drying PSA and Application of Short Cycle Time Approximation.

2000 ◽  
Vol 33 (2) ◽  
pp. 205-210 ◽  
Author(s):  
Hongmei Lou ◽  
Fei Dong ◽  
Yoshiro Tominaga ◽  
Akio Kodama ◽  
Motonobu Goto ◽  
...  
Keyword(s):  
Cycle Time ◽  
Parametric Study ◽  
Separation Performance ◽  
Air Drying ◽  
Short Cycle ◽  
Time Approximation ◽  
Short Cycle Time
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