Histopathology of canker development on peach trees after inoculation with Cytospora leucostoma

1984 ◽  
Vol 62 (12) ◽  
pp. 2804-2813 ◽  
Author(s):  
M. Wisniewski ◽  
A. Linn Bogle ◽  
C. L. Wilson
Keyword(s):  
Callus Tissue ◽  
Anatomical Changes ◽  
Peach Trees ◽  
Canker Development ◽  
Barrier Zone

Anatomical changes in response to wounding or wounding plus inoculation with C. leucostoma were monitored over an 11-month period. Distinct bands of gum ducts in the xylem formed a barrier zone in all samples. Necrophylactic periderm (NP) formed at a faster rate in noninoculated samples. NP in inoculated samples was poorly delimited and weakly suberized in the callus tissue. Within 4 weeks after wounding, barriers in bark and xylem of inoculated samples were penetrated by wedges of mycelia. Callus in inoculated samples differentiated slowly compared with callus development in control wounds and multiple attempts to limit infection were ineffective. The effectiveness and value of a strong gumming response in reaction to Cytospora are discussed.

scholarly journals Gojenie się ran w pędach wiśni odm. Minister Podbielski [Wound healing in twigs of sour cherry cv. Minister Podbielski]

2015 ◽  
Vol 24 (2) ◽  
pp. 217-224 ◽  
Author(s):  
A. Golisz
Keyword(s):  
Wound Healing ◽  
Callus Tissue ◽  
Thick Layer ◽  
Sour Cherry ◽  
Growing Season ◽  
Anatomical Changes ◽  
Primary Callus ◽  
Parenchyma Cells

Studies were carried out on anatomical changes in sour cherry twigs after pruning. Changes in the surface of wounds begin by the filling of cells and vessels with gum substances. At the same time drying and splitting of tissues was observed. Healing of the wounds starts from the layer of parenchyma cells from which callus develops. At the end of the growing season spring-made wounds were healed with a thick layer of callus tissue, while healing of summer-made wounds was hastened shortly after formation of the primary callus layer.

Clinical and epidemiological picture of syphilitic infection at present stage

2019 ◽  
Vol 1 (7) ◽  
pp. 42-45
Author(s):  
A. A. Bagirova ◽  
K. M. Lomonosov
Keyword(s):  
Nervous System ◽  
Statistical Analysis ◽  
Blood Vessels ◽  
Case Histories ◽  
Present Stage ◽  
Anatomical Changes

A statistical analysis of the syphilis incidence in Moscow and regions from 2006 to 2017 was carried out. Despite a decrease in the general syphilis incidence an increase in incidence of such severe forms as late neurosyphilis and cardiovascular syphilis was observed. We analyzed 1,600 archive case histories of inpatients and outpatients of the Sechenov University clinics in Moscow and identified the specific lesions in heart tissues, blood vessels and the nervous system. in literal data a relatively small number of cardiosyphilis cases was described. it can be explained by the fact that earlier only gummas, that are rarely to be located in the heart and difficult to be identified clinically, were considered to be the only specific pathological and anatomical changes for syphilis of the heart.

Physiological and anatomical changes in Thai rice landrance (Oryza sativa L.) cv Pakaumpuel after colchicine treatment

2020 ◽  
Vol 52 (5) ◽  
Author(s):  
Worasitikulya Taratima ◽  
Pradub Reanprayoon ◽  
Sayam Raso ◽  
Mallika Chantarangsee ◽  
Pitakpong Maneerattanarungroj
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Colchicine Treatment ◽  
Anatomical Changes

The Effect of Water Shortage on Potted Peach Trees in Relation to Ecophysiological Parameters and Infra-red Thermometry

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 541b-541
Author(s):  
Rita Giuliani ◽  
James A. Flore
Keyword(s):  
Chlorophyll Fluorescence ◽  
Gas Exchange ◽  
Early Detection ◽  
Water Potential ◽  
Canopy Temperature ◽  
Water Shortage ◽  
Development Rate ◽  
Plant Water ◽  
Infra Red ◽  
Peach Trees

Potted peach trees grown outdoors during the 1997 season were subjected to drought and subsequent rewatering to evaluate their dynamic response to soil water content. The investigation was primarily focused on the early detection of plant water stress to prevent negative effects on the growth. Leaf chlorophyll fluorescence and canopy temperature estimates (by infra-red thermometry) were conducted. Drought effect on physiological processes were detected through by estimates of canopy development rate, leaf gas-exchange measurements; while leaf water potential was measured to characterize plant water status. A decrease in the canopy's development rate was found 1 week after irrigation was stopped, which also coincided with a more-negative leaf water potential, whereas a decrease of the gas-exchange activities occurred several days later. No significant differences between the stressed and control plants were recorded by the chlorophyll fluorescence parameters (Fo, Fm, Fv and the ratio Fv/Fm), whereas the infra-red estimates of canopy temperature detected a slight increase of the canopy surface temperature (connected to the change of leaf energy balance and in relation to partial stomatal closure) on the non-irrigated plants 1 week after the beginning of the trial. The use of infra-red thermometry for early detection of water shortage is discussed.

Temperature Effects during Endodormancy Induction on Subsequent Anthesis and Growth of Peach Trees

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 452c-452 ◽  
Author(s):  
Schuyler D. Seeley ◽  
Raymundo Rojas-Martinez ◽  
James Frisby
Keyword(s):  
Temperature Effects ◽  
Shoot Length ◽  
The Other ◽  
Nighttime Temperatures ◽  
Peach Trees ◽  
Better Than

Mature peach trees in pots were treated with nighttime temperatures of –3, 6, 12, and 18 °C for 16 h and a daytime temperature of 20 °C for 8 h until the leaves abscised in the colder treatments. The trees were then chilled at 6 °C for 40 to 70 days. Trees were removed from chilling at 40, 50, 60, and 70 days and placed in a 20 °C greenhouse under increasing daylength, spring conditions. Anthesis was faster and shoot length increased with longer chilling treatments. Trees exposed to –3 °C pretreatment flowered and grew best with 40 days of chilling. However, they did not flower faster or grow better than the other treatments with longer chilling times. There was no difference in flowering or growth between the 6 and 12 °C pretreatments. The 18 °C pretreatment resulted in slower flowering and very little growth after 40 and 50 days of chilling, but growth was comparable to other treatments after 70 days of chilling.

THE USE OF SOME ORGANIC AND BIO-FERTILIZERS FOR EARLIGRANDE PEACH TREES FERTILIZATION UNDER NORTH SINAI CONDITIONS A: VEGETATIVE GROWTH AND LEAF CHEMICAL CONTENT

2018 ◽  
Vol 7 (2) ◽  
pp. 99-114
Author(s):  
Abdaallah El-Kharafen ◽  
Hany El-Alakmy ◽  
Roqia Ahmed ◽  
Mohamed Sourour ◽  
Mohamed ElDeep
Keyword(s):  
Vegetative Growth ◽  
Chemical Content ◽  
Peach Trees ◽  
North Sinai
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