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Plant Biology

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Articles 451 - 465 of 465

Full-Text Articles in Plant Breeding and Genetics

Bussell Barley, J L. Mcmullan, J. A. Parish, H. M. Fisher Jan 1968

Bussell Barley, J L. Mcmullan, J. A. Parish, H. M. Fisher

Journal of the Department of Agriculture, Western Australia, Series 4

BUSSELL is a new high yielding 2-row barley variety named early in 1967.

An early maturing variety, with white grains of good quality, Bussell has short and extremely strong straw.

It has yielded more than any other variety under test in areas of Western Australia which receive more than 18 inches of annual rainfall.

It has yielded more than Prior in all areas.


Subterranean Clover Establishment In The Wheatbelt, M L. Poole Jan 1968

Subterranean Clover Establishment In The Wheatbelt, M L. Poole

Journal of the Department of Agriculture, Western Australia, Series 4

Care and attention to detail will greatly increase the chances of establishing good subterranean clover pastures in the wheatbelt.

PASTURE ESTABLISHMENT usually takes second place to cropping in the wheatbelt, with many farmers "bunging in a bit of clover" and hoping for the best. The worst often transpires, with either patchy stands or complete failure resulting.

Using "cheap" methods of establishment is a short-sighted approach and a waste of energy and resources.


Uniwhite : A New Lupin Variety, John Sylvester Gladstones Jan 1967

Uniwhite : A New Lupin Variety, John Sylvester Gladstones

Journal of the Department of Agriculture, Western Australia, Series 4

UNIWHITE is a new lupin variety, the Institute of Agriculture, University of Western Australia.

It is a variety of the narrow-leaved, or "New Zealand blue" lupin, Lupinus angustifolius L.


Serradella, H G. Cariss, B. J. Quinlivan Jan 1967

Serradella, H G. Cariss, B. J. Quinlivan

Journal of the Department of Agriculture, Western Australia, Series 4

SERRADELLA is an annual pasture legume which is now coming increasingly under notice.

I t is not a new species, for it has been grown in Western Australia as a pasture plant for some 12 years and in Europe for over 100 years.


The Naturalised And Cultivated Annual Medics Of Western Australia, B J. Quinlivan Jan 1965

The Naturalised And Cultivated Annual Medics Of Western Australia, B J. Quinlivan

Journal of the Department of Agriculture, Western Australia, Series 4

IT is not many years since the term pasture improvement in Western Australia was synonymous with one species only, subterranean clover.

The amazing adaptability of this species to the environment enabled it to be grown in a wide range of rainfall conditions and in many different districts.


The Certified Strains Of Subterranean Clover In Western Australia, B J. Quinlivan Jan 1962

The Certified Strains Of Subterranean Clover In Western Australia, B J. Quinlivan

Journal of the Department of Agriculture, Western Australia, Series 4

THE agricultural districts of Western Australia have a typically Mediterranean climate.

Most of the annual rains fall in the late autumn, winter and early spring. The winters are relatively warm, with day temperatures between 50° and 80° Fahrenheit, while the summers are very hot and dry.


The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik Dec 1961

The Effects Of Irradiating Dormant Maize Seeds With Xrays And Thermal Neutrons, Rosalind Morris, E. F. Frolik

Nebraska Agricultural Experiment Station: Historical Research Bulletins

In 1951 a research program was started at the University of Nebraska to compare the developmental effects of thermal neutrons and X rays on different crop seeds. Three crops, barley, tomato and maize, were chosen for additional information involving induced chromosomal aberrations and seedling mutations. The maize investigations are presented in this bulletin, along with a comparison among the three crops with respect to irradiation effects.


The Fruit Industry In Other Lands. 3. The United States Of America, Frank Melville Jan 1960

The Fruit Industry In Other Lands. 3. The United States Of America, Frank Melville

Journal of the Department of Agriculture, Western Australia, Series 4

MY visit to the United States extended over a period of ten weeks and in this time fruit areas in New York State, Washington State and California were seen.

In addition, certain other activities were covered in other centres. Contact with Research and Extension personnel was made.


The Geraldton Strain Of Subterranean Clover, A J. Millington Jan 1960

The Geraldton Strain Of Subterranean Clover, A J. Millington

Journal of the Department of Agriculture, Western Australia, Series 4

THE cereal-growing areas of Western Australia form a narrow triangle extending about 700 miles from north to south, gradually increasing in width towards the south to about 150 miles.


The Fern Prothallium As An Experimental Object For Morphogenetic Studies, Dorothy Anita Douglas May 1955

The Fern Prothallium As An Experimental Object For Morphogenetic Studies, Dorothy Anita Douglas

Theses & Honors Papers

No abstract provided.


Pollination Cycles And Pollen Dispersal In Relation To Grass Improvement, Melvin D. Jones, L. C. Newell Oct 1946

Pollination Cycles And Pollen Dispersal In Relation To Grass Improvement, Melvin D. Jones, L. C. Newell

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The plant breeder is initially concerned with gaining a knowledge of the breeding behavior of his plant materials in order that improvement may be undertaken effectively. It is important to know the different characteristic pollination habits of these plants. To develop and apply techniques applicable to the improvement of a given grass crop, it is desirable to know the time of day and the number of days that the grass sheds pollen. The effects of temperature, humidity, light, and wind on pollination must be considered. Once superiority of germplasm is obtained, the most important consideration is the maintenance of this …


The Development Of The Sporangium Of Aspidium (Cyrtomium) Falcatum, Rita Thorpe May 1941

The Development Of The Sporangium Of Aspidium (Cyrtomium) Falcatum, Rita Thorpe

Bachelors’ Theses

It is the purpose of the writer in this thesis, to describe the development of the sporangium of Aspidium (Cyrtomium) falcatum, and to observe some of the cytological features of the sporogenous cells.


Microsporogenesis In Lilium Formosum, Marcella Alice Zeman Jun 1931

Microsporogenesis In Lilium Formosum, Marcella Alice Zeman

Bachelors’ Theses

Anthers of Lilium formosum were collected ranging from the very young to the mature. Anthers used for the writing of this paper were gathered around Easter time or early April. The anthers were removed from the bud and the ends were cut off. Each anther was cut into three or four parts at right angles to their respective lengths. After the washing, infiltration, and imbedding was completed, sections were cut from eight to ten micra in thickness. Before staining the sections were placed in a solution of hydrogen peroxide to bleach for three hours. Flemming 's triple stain, a combination …


Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton Jan 1923

Bulletin 105 - Pedigree Selection Of Seed At The Chapman And Merredin Experiment Farms, Geo L. Sutton

Bulletins 1 - 2999

A Paper read before the Royal Society of the Royal Society of Western Australia, 12th October,1921.

"Pedigree" or "Pure Line" selection is that system of selection under which the choice is made, not. solely because of the attractive appearance of the plant, but because of its ability to transmit its good qualities to the progeny. Such a system requires, and the method of selection ensures, that the qualities sought after shall be hereditary. For this purpose a record of ancestry is essential, hence the use of the term "pedigree."


The Pinetum Britannicum, Edward Ravenscroft Jan 1884

The Pinetum Britannicum, Edward Ravenscroft

Archives & Reprint Series (imprint)

The Pinetum Britannicum: A Descriptive Account of Hardy Coniferous Trees Cultivated in Great Britain was authored by Edward James Ravenscroft (1816-1890) during the time period of 1863 through 1884.

This first edition Pinetum Brittanicum is regarded as an important British study of pines. Edward James Ravenscroft’s exquisitely detailed illustrations exemplify the widely embraced enthusiasm for the art and science of capturing and classifying conifers during the 19th-century. Ravenscroft was a master in the field of natural history illustration, which is often called “art in the service of science.”