Characterization of the Occurrence and Abundance of the Common Ragweed (Ambrosia artemisiifolia L.) with Regard to Assessment of Its Expansion Potential in European Russia

2019 ◽  
Vol 10 (3) ◽  
pp. 220-226 ◽  
Author(s):  
A. N. Afonin ◽  
Y. A. Fedorova ◽  
Yu. S. Li
2005 ◽  
Vol 19 (3) ◽  
pp. 737-743 ◽  
Author(s):  
Sophie Saint-Louis ◽  
Antonio DiTommaso ◽  
Alan K. Watson

The degree of resistance to linuron of a common ragweed biotype was investigated. Suspected linuron-resistant plants collected from a carrot field near Sherrington, Québec, were subjected to increasing rates of linuron under glasshouse conditions. Resistance to linuron of the common ragweed biotype was suspected because 33% of plants survived to reproduction after they were sprayed at a rate of 4.5 kg ai/ha, two times the dose rate recommended for linuron in carrots, and also because 3% of plants survived to reproduction after they were sprayed at a rate of 22.5 kg ai/ ha, 10 times the recommended dose. Susceptible plants collected from a field with no prior history of linuron use were all killed when sprayed at the lowest dose rate recommended, 1.125 kg ai/ha. The herbicide-resistance ratio was 29.0 for linuron, and for cross-resistance to atrazine, the ratio was 1.3, indicating that these plants exhibit greater resistance to linuron than to atrazine.


1959 ◽  
Vol 120 (4) ◽  
pp. 235-243 ◽  
Author(s):  
D. E. Bianchi ◽  
D. J. Schwemmin ◽  
W. H. Wagner,

2013 ◽  
Vol 93 (8) ◽  
pp. 962-973 ◽  
Author(s):  
O. V. Kovalev ◽  
Yu. V. Tyutyunov ◽  
L. P. Iljina ◽  
S. V. Berdnikov

Weed Science ◽  
1988 ◽  
Vol 36 (5) ◽  
pp. 574-576 ◽  
Author(s):  
Gilles Vincent ◽  
Denis Lauzer ◽  
Mario Cappadocia

Common ragweed (2n=36), giant ragweed (2n = 24), and their reciprocal F1hybrids (2n = 30) were analyzed for a number of traits. Hybrids of the type giant ragweed♀ × common ragweed♂ were obtained via immature embryo culture. The analyses revealed a surprising contribution of the pollen parent for features such as biomass, leaf area, and specific leaf area. Leaf morphology, however, was similar to the maternal parent. One plant, originating from crosses of the type common ragweed♀ × giant ragweed♂, developed abnormally and cytological analysis revealed the presence of 24 chromosomes in its somatic cells. Probably this plant had an androgenetic origin.


Author(s):  
Madhubhushan M ◽  
Seshaiah S ◽  
Chandrudu J ◽  
Sagar R ◽  
Akila CR

The common watermelon item (Citrullus lanatus) seeds were gained from castoffs verdant nourishments for use by decorating, sun ventilation and pulverizing. Light yellow-toned oil was gotten by dissolvable withdrawal using oil atmosphere and the going with traits were gotten using oil ether: pH, refractive rundown, thickness, dissolvable miscibility, coagulating temperature, fire nature, express gravity, streak point and warmth of consuming. With a shallow level of unsaturation, stepped level of smoothness, and proximity of raised degree of the sensible proportion of free unsaturated fats. The low assessment of the solidifying temperature of the oil offered a hint that the oil can be managed in various areas paying little heed to the qualification in temperature. The following level of linoleic destructive of the oil offers a hint of natural gradation of solidarity. Fatty esters are increasing expanding significance as a biodegradable swap for mineral oils. In some request regions, for example, cutting tool oil, gearbox, pressure-driven oils, and greases for raw petroleum creation, the oleochemical items are set up. Nonetheless, certain particular wellsprings of fatty esters are hitherto to be abused for this comparative reason. This exploration subsequently tests into one of the less used wellsprings of fatty esters in watermelon. The oil from the kernels demonstrations a top-notch yield presents significant utilitarian gatherings for change and thus was utilized to set up an assortment of oleochemicals which demonstrated excellence materials in contrast with the routinely utilized oils feed frameworks for oleochemicals after portrayal. The photopolymers acquired indicated piercing vinyl protons for consistent polymerize.


Author(s):  
Michael LeBuffe

Spinoza’s characterization of ideas of reason in Ethics 2 makes reason distinctive both psychologically and epistemologically. Psychologically, ideas of reason are frequently present to mind and, as a result, powerful influences on human belief and action; a notable class of ideas of reason, the common notions, are always present to mind. Within such ideas we always regard certain properties to be present in the objects of our experience. Epistemologically, ideas of reason are a distinctively human kind of knowledge, where we cannot immediately know the essences of singular things, as on many views gods or angels might. Instead, in the first instance, rational knowledge is knowledge of properties of things in experience. From such knowledge, Spinoza argues, we can also come to further knowledge by means of processes, and it is these processes that closely resemble what many readers today will recognize as reasoning.


Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 89
Author(s):  
Jiayu Li ◽  
Fuxian Yang ◽  
Ruobing Liang ◽  
Sheng Guo ◽  
Yaqiong Guo ◽  
...  

Cryptosporidiumfelis is an important cause of feline and human cryptosporidiosis. However, the transmission of this pathogen between humans and cats remains controversial, partially due to a lack of genetic characterization of isolates from cats. The present study was conducted to examine the genetic diversity of C. felis in cats in China and to assess their potential zoonotic transmission. A newly developed subtyping tool based on a sequence analysis of the 60-kDa glycoprotein (gp60) gene was employed to identify the subtypes of 30 cat-derived C. felis isolates from Guangdong and Shanghai. Altogether, 20 C. felis isolates were successfully subtyped. The results of the sequence alignment showed a high genetic diversity, with 13 novel subtypes and 2 known subtypes of the XIXa subtype family being identified. The known subtypes were previously detected in humans, while some of the subtypes formed well-supported subclusters with human-derived subtypes from other countries in a phylogenetic analysis of the gp60 sequences. The results of this study confirmed the high genetic diversity of the XIXa subtype family of C. felis. The common occurrence of this subtype family in both humans and cats suggests that there could be cross-species transmission of C. felis.


Sign in / Sign up

Export Citation Format

Share Document