Index Catalog // ScholarsArchive@OSU

The effect of ethylene manipulation on flower bud development of prunus persica and prunus domestica and of pyrus communis ovule senescence

Creator:: Crisosto, Carlos H.
Abstract:: In the Northwest, two tree fruit production problems may be related to the role of ethylene on plant growth and development: flowers and developing fruits are subject to low temperature injury during early spring, and to the low fruit set of 'Comice'. Ethylene may be involved in influencing dormancy and...
Resource Type:: Dissertation
Full Text:: indebted to Dr. Porter B. Lombard, who has been like a second father to me, for his guidance during my

Relationships of ammonium and nitrate status with inflorescence necrosis in 'Pinot noir' grapevines

Creator:: Gu, Sanliang
Abstract:: Inflorescence necrosis (IN) is a recently described disorder in grapes characterized by partial or complete deterioration of the pedicel and rachis near bloom. Elevated levels of ammonium in the rachis are associated with the incidence of IN and hypothesized as the cause of the disorder. An incubation system with single-node...
Resource Type:: Dissertation
Full Text:: : ^ ^_ .,, . —. -,— . Porter B. Lombard Inflorescence necrosis (IN) is a recently described disorder in grapes

Water partitioning and respiration activity of dormant grape buds

Creator:: Gardea, Alfonso A.
Abstract:: Dormancy of 'Pinot Noir' grapevines was characterized. Primary buds required ca 300 cumulative chilling hours (CCH) to initiate the transition from endodormancy to ecodormancy, which occurred in mid November. Additional chilling, up to 1000 CCH, improved budbreak. Changes in bud water content were estimated by gravimetric and spectroscopic methods. Total,...
Resource Type:: Dissertation
Full Text:: Vargas Dedicated to Georgina Vargas and Porter B. Lombard. Also to Alfonso J. and Manuel Fco

Effects of flooding on peach, apple, quince and several pear species

Creator:: Andersen, Peter C.
Abstract:: A series of experiments was designed to investigate differential flood-tolerance and the phenomenon of flood-induced stomatal closure of several fruit tree species. The first two experiments were conducted with potted plants submerged outdoors 5-10 cm above the soil line. Plant morphology, growth, leaf conductance (cL), and soil oxygen diffusion rate...
Resource Type:: Dissertation
Full Text:: like to express my sincere appreciation to my co-advisors. Dr. Porter Lombard and Dr. Melvin Westwood

Frost hardiness of buds, flowers and fruit of pear (Pyrus communis L.)

Creator:: Strang, John George
Abstract:: Spring frost damage to pears in the Pacific Northwest frequently results in substantial crop losses. This research was undertaken to investigate the effects of frost on pear buds, flowers, and fruit through controlled freezing tests and field studies in order to better understand the frost phenomenon and refine frost protection...
Resource Type:: Dissertation
Full Text:: ^^^—^ v>~ ■V Porter B. Lombard Melvin N. Westwood Spring frost damage to pears in the Pacific

Nitrogen dynamics in field grown comice pears

Creator:: Sanchez, Enrique E.
Abstract:: The dynamics of N was studied in field grown Comice/Provence quince BA29 pears in Medford, Oregon. Total tree biomass, N content, and ¹⁵N evaluations suggest that young pears require little N (48 kg N ha⁻¹ yr⁻¹). About 45% of total tree N present in dormant trees was remobilized into new...
Resource Type:: Dissertation
Full Text:: , Larry Daley, Neil Christensen, Porter Lombard and Tim Righetti. Neil Christensen gave me the nice idea

Relationship of boron to reproduction in hazelnut (Corylus avellana L.)

Creator:: Shrestha, Gyan Kumar
Abstract:: Boron sprays produced fruit set increases in 'Barcelona' hazelnut orchards in 1984 and in 1985. The absolute fruit set was correlated with leaf B content but not with nut B. With relative fruit set (RFS), B content of nuts in May (r = 0.63**) was more strongly related to set...
Resource Type:: Dissertation
Full Text:: thanks are due to the members of my Graduate Committee, Dr. Robert L. Stebbins, Dr. Porter B. Lombard

Developmental biology and phenology of the walnut husk fly, Rhagoletis completa Cresson (Diptera: Tephritidae) in the Willamette Valley of Oregon

Creator:: Kasana, Abdulmajid
Resource Type:: Dissertation
Full Text:: , Drs. Ralph Berry, Glen Fisher, Marry Powelson, and Porter Lombard for their helpful suggestions and

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Creator:: Kosittrakun, Manit
Resource Type:: Dissertation
Full Text:: . Porter Lombard and Timothy Righetti of the Horticulture Department, and Drs. Michael Burgett and Helmut

Chilling and nutritional requirements of fruit trees in Yemen

Creator:: Alkoshab, Othman
Abstract:: A portion of this study was initiated to provide the basis for implementing a chill unit accumulation procedure in Yemen. Most continuous or daily minimum, maximum temperature models severely underestimated chilling units, and slight modifications offered little improvement for the complex models. Only the Crossa Raynaud formula approximated generally accepted...
Resource Type:: Dissertation
Full Text:: also extended to Dr. J. Hart, Dr. P.B. Lombard, Dr. A. Mazaheri and Dr. M.T. Ali Niazee for their

ScholarsArchive@OSU

The effect of ethylene manipulation on flower bud development of prunus persica and prunus domestica and of pyrus communis ovule senescence

Relationships of ammonium and nitrate status with inflorescence necrosis in 'Pinot noir' grapevines

Water partitioning and respiration activity of dormant grape buds

Effects of flooding on peach, apple, quince and several pear species

Frost hardiness of buds, flowers and fruit of pear (Pyrus communis L.)

Nitrogen dynamics in field grown comice pears

Relationship of boron to reproduction in hazelnut (Corylus avellana L.)

Developmental biology and phenology of the walnut husk fly, Rhagoletis completa Cresson (Diptera: Tephritidae) in the Willamette Valley of Oregon

Effects of near anaerobic storage conditions on physiology and flavor of various fruit types and on mortality of apple maggot (Rhagoletis pomonella)

Chilling and nutritional requirements of fruit trees in Yemen

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