Intercellular pH of Peach and Apricot Mesocarp

1988 ◽  
Vol 15 (4) ◽  
pp. 505 ◽  
Author(s):  
TD Ugalde ◽  
PH Jerie ◽  
DJ Chalmers
Keyword(s):  
Growth Rate ◽  
Prunus Persica ◽  
Prunus Armeniaca ◽  
Ph Change ◽  
Ph Values ◽  
Rate Of Growth ◽  
Prunus Armeniaca L

Intercellular pH of developing peach (Prunus persica (L.) Batsch) and apricot (Prunus armeniaca L.) mesocarp was estimated from the pH of small volumes of water in contact with washed cut surfaces. In both fruits, the pH changed from neutral to acidic as the rate of growth changed from slow and declining to rapid. In peaches, the changes in intercellular pH and growth rate occurred gradually over a 4-week period, while in apricots these changes were more rapid. Studies on the mechanism of the pH change showed the measured pH values to be a reasonable and adequate estimate of intercellular pH in vivo. We propose that intercellular acidity influences mesocarp development in at least two ways. It allows high rates of assimilate utilisation by inducing activity in existing intercellular invertase, and it predisposes the tissue to ripening.

Accelerated solvent extraction of carotenoids from: Tunisian Kaki (Diospyros kaki L.), peach (Prunus persica L.) and apricot (Prunus armeniaca L.)

2015 ◽  
Vol 184 ◽  
pp. 131-139 ◽  
Author(s):  
Khalil Zaghdoudi ◽  
Steve Pontvianne ◽  
Xavier Framboisier ◽  
Mathilde Achard ◽  
Rabiga Kudaibergenova ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Prunus Persica ◽  
Prunus Armeniaca ◽  
Accelerated Solvent Extraction ◽  
Diospyros Kaki ◽  
Prunus Armeniaca L

scholarly journals Characterization of Pseudomonas syringae pv. syringae from Diseased Stone Fruits in Kyrgyzstan and Testing of Biological Agents against Pathogen

2020 ◽  
Vol 9 (2) ◽  
pp. 71-91
Author(s):  
Tinatin Doolotkeldieva ◽  
Saikal Bobusheva
Keyword(s):  
Pseudomonas Syringae ◽  
Prunus Persica ◽  
Control Agent ◽  
Prunus Armeniaca ◽  
Plant Diseases ◽  
Rrna Gene ◽  
Stone Fruits ◽  
Initial Manifestation

The plant diseases caused by the Pseudomonas syringae сomplex bacteria are economically important and occur worldwide on various plants, and it is as a pathogen that has not been the object of studies and little is known about its epidemiology in Kyrgyzstan. The conventional phenotypic (LOPAT, API tests) and PCR-assisted isolation were used for the identificationof Pseudomonas syringae pv. syringaе isolates from the affected organs of local stone fruits, such as peach (Prunus persica), cherry (Prunus subgen), apricot (Prunus armeniaca), and plum (Prunus salicina) samples taken from the Chy, Issuk-Kul, and Batken regions of the country. 16S rRNA gene amplification was performed with primers 27F (5'-AGA GTT TGA TCC TGG CTC AG -3') and 907R (5 '–CCG TCA ATT CCT TTG AGT TT-3') for the identification of obtained P.syringae pv. syringaе isolates. From 40 primary isolates of Gram-negative rod-shaped bacteria, 12 were identified as Pseudomonas syringae pv. syringae, while the remaining isolates were identified as bacteria from Stenotrophomonas, Xanthomonas, Erwinia genera. The antagonist bio control agent—Streptomyces bacteria strains were screened and selected against the bacterial canker pathogen in in vitro experiments and on apricot seedlings in vivo conditions. Obtained results could encourage to develop a local bio-product based on this bioagent for spraying stone fruits with the initial manifestation of disease symptoms and to conduct preventive treatments in the fall and spring to increase the plant's resistance to pathogens.

Freezing injuries to flower buds and their influence on yield of apricot (Prunus armeniaca L.) and peach (Prunus persica L.)

2013 ◽  
Vol 93 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Marek Szymajda ◽  
Kris Pruski ◽  
Edward Żurawicz ◽  
Mirosław Sitarek
Keyword(s):  
Prunus Persica ◽  
Temperature Fluctuations ◽  
Prunus Armeniaca ◽  
Climatic Conditions ◽  
Winter Hardiness ◽  
Freezing Injury ◽  
Late Winter ◽  
Flower Buds ◽  
Prunus Armeniaca L ◽  
Freezing Injuries

Szymajda M., Pruski, K., Żurawicz, E. and Sitarek, M. 2013. Freezing injuries to flower buds and their influence on yield of apricot ( Prunus armeniaca L.) and peach ( Prunus persica L.). Can. J. Plant Sci. 93: 191–198. Each spring, for 3 consecutive years, 2009–2011, the degree of freezing injury to overwintering flower buds of selected cultivars and clones of apricot and peach was evaluated at the Dąbrowice Research Institute of the Horticulture E$xperimental Orchard (District of Skierniewice, Poland). Apricot flower buds were damaged less severely than those of peach during the winter of 2009/2010 when the lowest temperatures (maximum drop in temperature) coincided with the full dormancy stage of the trees. Conversely, peach flower buds were less damaged than buds of apricot when the maximum drop in temperature occurred after the late winter thaw in both 2008/2009 and 2010/2011. Under Polish climatic conditions, peach proved to be more reliable than apricot in consistency to produce fruit. Results have shown that the most hardy apricot and peach cultivars can develop very strong winter hardiness allowing the trees to survive temperatures as low as −28°C, as long as there are no severe temperature fluctuations during late winter.

scholarly journals Growth, phenology and fruit set of Prunus armeniaca L. (cv. Ninfa) grafted on two rootstocks in organic and conventional management

2014 ◽  
Vol 41 (No. 3) ◽  
pp. 101-106
Author(s):  
L.F. Pérez-Romero ◽  
F.T. Arroyo ◽  
C. Santamaría ◽  
J.F. Herencia ◽  
A. Daza
Keyword(s):  
Prunus Persica ◽  
Prunus Armeniaca ◽  
Solid Concentration ◽  
Cross Sectional ◽  
Organic System ◽  
Conventional Management ◽  
Soluble Solid ◽  
Prunus Armeniaca L ◽  
Better Than

Tree growth, flowering, yield and fruit quality of Prunus armeniaca L. cv. Ninfa grafted on peach cv. Nemaguard [Prunus persica (L.) Batsch] and cv. Real Fino apricot (Prunus armeniaca L.) as rootstocks were analysed in experimental orchard under organic and conventional management systems. The study was performed during 2012–2013 in the province of Seville (SW Spain). Cv. Nemaguard rootstock had larger cross-sectional areas of the trunk (TCSA), higher yields, began flowering earlier and lasted 2–4 days more. The organic management resulted in lower values of TCSA and yield, and flowering was delayed and shortened. Overall, cv. Nemaguard rootstock produced slightly larger fruit in size and heavier weight. In contrast, apricots from cv. Real Fino had slightly higher soluble solid concentration. Acidity and maturity index were similar, while colour and firmness showed high variability. In general, the organic system produced fruit with soluble solid concentration somewhat higher. In summary, in both types of management cv. Nemaguard worked better than cv. Real Fino in terms of tree vigour, fruit yield and bloom period.    

scholarly journals SSR based characterization of peach (Prunus persica L.) and apricot (Prunus armeniaca L.) varieties cultivated in Hungary

2018 ◽  
pp. 17-24
Author(s):  
Janka Bedő ◽  
Eren Baris ◽  
Zsolt Szani ◽  
Dezső Surányi ◽  
Erzsébet Kiss ◽  
...  
Keyword(s):  
Simple Sequence Repeat ◽  
Prunus Persica ◽  
Prunus Armeniaca ◽  
Dna Fingerprints ◽  
Informative Marker ◽  
Simple Sequence Repeat Markers ◽  
Ssr Primers ◽  
Prunus Armeniaca L ◽  
Simple Sequence

The SSR (Simple Sequence Repeat) markers allow the discrimination of the cultivars and determination its specific DNA fingerprints. The aim of this research was to evaluate fifteen apricot (Prunus armeniaca L.) and fifty-one peach (Prunus persica L.) genotypes cultivated in Hungary to obtain their DNA fingerprints in 6 SSR (Simple Sequence Repeats) loci by allele numbers and sizes. DNAs were extracted from leaves. PCR was carried out with CY-5 fluorescent labeled Prunus microsatellite markers and the products were separated on polyacrylamide gel with ALF (Automated Laser Flourometer)-Express II. According to our results, in the case of peach genotypes, all 6 SSRs were able to amplify alleles. UDP 96 005 was the most informative marker and UCDCH 17 was the least due to its monomorphic pattern. Regarding the apricot samples BPPCT 041 did not amplify any allele. In the case of P. armeniaca UDP 96 005 had the highest heterozygosity index as well and the highest number of alleles. The least informative marker was the UCDCH 17. Since the 6 SSR were not enough to discriminate the apricot and peach genotypes, it is suggested to use more SSR primers.

Rumination in sheep. IV. The investigation of some possible control mechanisms

1965 ◽  
Vol 16 (5) ◽  
pp. 837 ◽  
Author(s):  
GR Pearce
Keyword(s):  
Volatile Fatty Acids ◽  
Control Mechanisms ◽  
Apparent Effect ◽  
Ph Change ◽  
Once Daily ◽  
Ph Values ◽  
Rumen Ph ◽  
Per Se ◽  
Saliva Flow

Rumination of caged sheep was recorded under conditions of: (a) variable rumen pH, (b) rumen infusions of volatile fatty acids and urea, (c) variable saliva flow to the rumen, (d) mixing of the rumen contents in vivo, and (e) teasing with food. The circadian (24-hr) pattern of rumination after once daily feeding was similar to the pattern of rumen pH change, but no consistent effect of pH per se upon the initiation of rumination was found when rumen contents were replaced with buffered mixtures at pH values ranging from c. 5.10 to 6.95. Rumination, however, tended to be irregular at the lower pH levels. The addition of sodium carbonate to the rumen to prevent a fall in pH after feeding had no apparent effect upon the initiation of rumination. The infusion of volatile fatty acid or urea solutions into the rumen apparently did not affect rumination. Removal of part of the saliva by aspiration during eating, or adding previously aspirated saliva had no effect. The manual mixing of rumen contents by means of a large rumen fistula did not affect initiation of rumination. After teasing with food, one sheep did not recommence ruminating for several hours; another showed practically no reaction; and the remaining two intermediate responses. The initiation of rumination is discussed in relation to these and some other aspects.

scholarly journals Phytochemical Screening, Chemical Constituents, Traditional Medicine Usage, Pharmacological Effect, Metabolism and Pharmacokinetics of Semen armeniacae

2021 ◽  
Vol 12 (3) ◽  
pp. 3186-3197
Keyword(s):  
Skin Diseases ◽  
Chemical Constituents ◽  
Oral Intake ◽  
The United States ◽  
Prunus Armeniaca ◽  
Pharmacological Effect ◽  
Experimental Pharmacology ◽  
Prunus Armeniaca L

Semen armeniacae refers to the seeds of Prunus armeniaca L. (Rosaceae). The Prunus armeniaca L. plant is spreading in the Korean peninsula, China, India, Japan, North Africa, and the United States of America. The Prunus armeniaca contains 3% amygdalin, titratable acidity, sugars (saccharose, fructose, and glucose), and organic acids (citric and malic acids) in addition to prunasin and mandelonitrile. Semen armeniacae is used for the treatment of asthma and cough (with expectoration and fever). It is used in constipation therapy. It is also used as eardrops for inflammation and tinnitus and the treatment of skin diseases. The pharmacological effect of Semen armeniacae includes experimental and clinical pharmacology. Experimental pharmacology includes anti-cholinesterase, neuroprotective, analgesic, antipyretic, antitumor, antibacterial, antimicrobial, antifungal, and antitussive activities. Decoction of Semen armeniacae to 2275 patients with COVID-19 improves clinical parameters such as lung state, clinical cure rate, number of cough reduction cases, symptom score of cough, viral nucleic acid testing, and inflammatory biomarkers. Oral intake of Semen armeniacae extract for 28 days did not cause any hematological, biochemical, or histological changes in rats. The Prunus armeniaca plant declines oxidative stress, inflammation, fat degeneration, and necrosis in alcohol-induced in-vivo and in-vitro liver injury models. There is no effect on fertility in rats after eating Semen armeniacae for 5 weeks. The average daily dose= 3-9 g of Semen armeniacae rinsing in boiling water then adding to a decoction. In conclusion, Semen armeniacae has anti-cholinesterase, neuroprotective, analgesic, antipyretic, antitumor, antibacterial, antimicrobial, antifungal, and antitussive activities.

Sign in / Sign up

Export Citation Format

Share Document