Structural root growth of young Veronese poplars on erodible slopes in the southern North Island, New Zealand

Floral induction was studied in New Zealand and Mediterranean varieties of Dactylis glomerata L. and their hybrids. Treatments of 1 month vernalization, or 1 month of cold short days, or 2 months of warm short days, when followed by long days, induced almost complete heading in the field for most materials. Early dates of heading, many fertile tillers of increased height, and heads of a large and branched type also were induced by these treatments as compared with the untreated control material. Certain cold treatments produced, at early vegetative stages, more growth than the control. It is inferred that earlier attempts to vernalize New Zealand Dactylis plants were unsuccessful because of the restricted root growth in pots and flats. Plant breeding implications concerning heterosis, genotype–environment interactions, and reciprocal differences in hybrids were discussed.

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Magellanic Cloud Eclipsing Binaries: Primary Distance Indicators

Symposium - International Astronomical Union ◽

10.1017/s007418090011900x ◽

1999 ◽

Vol 190 ◽

pp. 563-566

Author(s):

J. D. Pritchard ◽

W. Tobin ◽

J. V. Clausen ◽

E. F. Guinan ◽

E. L. Fitzpatrick ◽

...

Keyword(s):

New Zealand ◽

Magellanic Cloud ◽

Eclipsing Binaries ◽

Fundamental Parameters ◽

Distance Indicators

Our collaboration involves groups in Denmark, the U.S.A. Spain and of course New Zealand. Combining ground-based and satellite (IUEandHST) observations we aim to determine accurate and precise stellar fundamental parameters for the components of Magellanic Cloud Eclipsing Binaries as well as the distances to these systems and hence the parent galaxies themselves. This poster presents our latest progress.

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Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100067522 ◽

1970 ◽

Vol 28 ◽

pp. 106-107 ◽

Cited By ~ 1

Author(s):

Ronald S. Weinstein ◽

N. Scott McNutt

Keyword(s):

New Zealand ◽

General Hospital ◽

Massachusetts General Hospital ◽

Type I ◽

Type Ii ◽

Collaborative Effort ◽

Temperature And Pressure ◽

The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

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A Cytochemical Study of Glucose-6-Phosphatase (G-6-PASE) in Cells Participating in Atherogenesis of Rabbit Aorta

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100115924 ◽

1975 ◽

Vol 33 ◽

pp. 460-461

Author(s):

Sidney D. Kobernick ◽

Edna A. Elfont ◽

Neddra L. Brooks

Keyword(s):

Lipid Metabolism ◽

New Zealand ◽

Aortic Wall ◽

Rabbit Aorta ◽

Plaque Formation ◽

Metabolic Changes ◽

Atherosclerotic Plaques ◽

Cytochemical Study ◽

Cellular Alteration ◽

New Zealand White Rabbits

This cytochemical study was designed to investigate early metabolic changes in the aortic wall that might lead to or accompany development of atherosclerotic plaques in rabbits. The hypothesis that the primary cellular alteration leading to plaque formation might be due to changes in either carbohydrate or lipid metabolism led to histochemical studies that showed elevation of G-6-Pase in atherosclerotic plaques of rabbit aorta. This observation initiated the present investigation to determine how early in plaque formation and in which cells this change could be observed.Male New Zealand white rabbits of approximately 2000 kg consumed normal diets or diets containing 0.25 or 1.0 gm of cholesterol per day for 10, 50 and 90 days. Aortas were injected jin situ with glutaraldehyde fixative and dissected out. The plaques were identified, isolated, minced and fixed for not more than 10 minutes. Incubation and postfixation proceeded as described by Leskes and co-workers.

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