Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Plant Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 23851 - 23880 of 26271

Full-Text Articles in Entire DC Network

1991 Catalogue Of The Australian Lupin Collection Including Field Evaluation Data For Wild, Semi-Domesticated And Fully Domesticated Accessions, J. C. Clements, W. A. Cowling Sep 1991

1991 Catalogue Of The Australian Lupin Collection Including Field Evaluation Data For Wild, Semi-Domesticated And Fully Domesticated Accessions, J. C. Clements, W. A. Cowling

Grain and other field crops research reports

This report lists all wild, semi-domesticated and fully domesticated accessions in the Australian Lupin Collection to 1991. The Collection is composed of 2,264 accessions (Perth Numbers between 20629 and 27067) introduced to Australia or from naturalized populations and breeding programmes within Australia. Several accessions are selections from variable populations which were identified during field trials in South Perth, Western Australia. This catalogue lists the characteristics and field evaluation data for every accession where available. Plant breeders and crop scientists will find this information useful for the selection of lupin genotypes with desired characteristics.

Section A of this catalogue should be …


Sfa Gardens Newsletter, Sept 1991, Sfa Gardens, Stephen F. Austin State University Sep 1991

Sfa Gardens Newsletter, Sept 1991, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.


Physiological Basis For Differential Sensitivities Of Plant Species To Protoporphyrinogen Oxidase-Inhibiting Herbicides, Timothy D. Sherman, José M. Becerril, Hiroshi Matsumoto, Mary V. Duke, Judy M. Jacobs, Nicholas J. Jacobs, Stephen O. Duke Sep 1991

Physiological Basis For Differential Sensitivities Of Plant Species To Protoporphyrinogen Oxidase-Inhibiting Herbicides, Timothy D. Sherman, José M. Becerril, Hiroshi Matsumoto, Mary V. Duke, Judy M. Jacobs, Nicholas J. Jacobs, Stephen O. Duke

Dartmouth Scholarship

With a leaf disc assay, 11 species were tested for effects of the herbicide acifluorfen on porphyrin accumulation in darkness and subsequent electrolyte leakage and photobleaching of chlorophyll after exposure to light. Protoporphyrin IX (Proto IX) was the only porphyrin that was substantially increased by the herbicide in any of the species. However, there was a wide range in the amount of Proto IX accumulation caused by 0.1 millimolar acifluorfen between species. Within species, there was a reduced effect of the herbicide in older tissues. Therefore, direct quantitative comparisons between species are difficult. Nevertheless, when data from different species and …


The Prairie Naturalist Volume 23, No. 3. September 1991 Sep 1991

The Prairie Naturalist Volume 23, No. 3. September 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

ANTIPREDATOR BEHAVIOR OF MOUNTAIN PLOVER CHICKS ▪ T A. Sordahl

USING AERIAL MARKING FOR ASSESSING POPULATION DYNAMICS OF LATE SUMMER ROOSTING RED-WINGED BLACKBIRDS ▪ C. M. Linz, C. E. Knittle, J. L. Cummings, J. E. Davis, Jr. , D. L. Otis, and D. L. Bergman

DISPERSAL OF THE MEADOW JUMPING MOUSE IN NORTHERN KANSAS ▪ J. R. Choate, D. W. Moore, and J. K. Frey

DIET, HOME RANGE, MOVEMENTS, AND ACTIVITY PERIODS OF SWIFT FOX IN NEBRASKA ▪ T D. Hines and R. M. …


Review Of The Wild Oat Inflorescence And Seed: Anatomy, Development And Morphology, M. V. S. Raju, David M. Sutherland Aug 1991

Review Of The Wild Oat Inflorescence And Seed: Anatomy, Development And Morphology, M. V. S. Raju, David M. Sutherland

Biology Faculty Publications

This slim volume describes a detailed study of the reproductive parts of Avena fatua, the wild oat plant-a common weed in the northern plains and the probable ancestor of the cultivated oat. The book integrates the author's own work with information from available literature and includes lengthy technical descriptions of the structure and the growth of the inflorescence, the floret, the ovule, the pollen grain, the embryo, the seed, and the young seedling. Throughout the work, the author relates the wild oat's structure and development to other grasses, other monocotyledons, and other seed plants, offering evolutionary interpretations of many of …


Miscellaneous Publication 28/91 - Midas (Model Of An Integrated Dryland Agricultural System), David J. Pannell, Andrew Bathgate Aug 1991

Miscellaneous Publication 28/91 - Midas (Model Of An Integrated Dryland Agricultural System), David J. Pannell, Andrew Bathgate

Farm Systems and Economics published reports

MIDAS is a bioeconomic model of mixed crop/livestock farms in Western Australia. It selects farm management strategies which maximise profit subject to resource, technical and environmental constraints using the linear programming technique. This document provides a thorough documentation of the version of MIDAS developed for the "eastern wheatbelt" region. If you are learning to use MIDAS with the MARG menu driven system, you need to read the MARG manual as well as this documentation.

From early in the life of MIDAS, we gave a high priority to making the data and assumptions readily accessible in documentation and in microcomputer spreadsheet …


Propagation Of Yellow Bells (Geleznowia Verrucosa Turcz., Rutaceae) From Seed, Blakely Paynter, Kingsley Dixon Aug 1991

Propagation Of Yellow Bells (Geleznowia Verrucosa Turcz., Rutaceae) From Seed, Blakely Paynter, Kingsley Dixon

Grain and Other Field Crops Research Articles

Geleznowia verrucosa Turcz. (Rutaceae) is a commercially important, bush-picked wildflower that has no known commercial means of propagation. This study examined factors influencing seed dormancy and likely to restrict germination of the species. Germination of entire, untreated seed was low (less than 2%), but removal of a small portion of the testa at or near the radicle end of the seed improved germination. This response was affected by the temperature under which the seed germinated, but was unaffected by exposure of the seed to light while germinating. The percentage germination of nicked seeds 52 days after sowing increased from 8% …


Proceedings International Sorghum And Millet Crsp Conference, Timothy Schilling, Gary Odvody, Gebisa Ejeta, Larry Claflin, Gary Peterson, Lloyd Rooney, Jerry Eastin, Joan Frederick Jul 1991

Proceedings International Sorghum And Millet Crsp Conference, Timothy Schilling, Gary Odvody, Gebisa Ejeta, Larry Claflin, Gary Peterson, Lloyd Rooney, Jerry Eastin, Joan Frederick

INTSORMIL Impacts and Bulletins

On behalf of the INTSORMIL Board of Directors, Principal Investigators and the Management Entity Office, it gives me great pleasure this moming to welcome you to this opening session of the 1991 INTSORMIL International SorghumIMlllet CRSP Conference.

INTSORMIL initiated the Biennial CRSP conference series in 1983. Attendance has grown with each meeting. Today we have 199 persons registered from 12 States in the U.S. and 27 different countries. There are representatives from three International Agricultural Research Centers (lCRISAT, IFPRI, and ICRISAT), four private seed companies and the U.S. National Grain Sorghum Producers Association (NGSPA).

I look around this audience and …


Rangeland Survey In Western Australia - History, Methodology And Applications, H. J. R. Pringle Jul 1991

Rangeland Survey In Western Australia - History, Methodology And Applications, H. J. R. Pringle

Natural resources published reports

The rangelands of Western Australia lie to the north-west of the agricultural areas, extending east to the Nullarbor and north to the Kimberley (Fig. 1). The major areas that are used for pastoralism are most of the Kimberley and the Pilbara, nearly all of the mulga shrublands, plus some of the Goldfields gum belt and part of the Nullarbor Plain.


Survivorship And Recruitment In A Long-Lived Prairie Perennial, Ipomoea Leptophylla (Convolvulaceae), Kathleen H. Keeler Jul 1991

Survivorship And Recruitment In A Long-Lived Prairie Perennial, Ipomoea Leptophylla (Convolvulaceae), Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Little is known of the lifespans of herbaceous plants, especially in grasslands, although this information is basic to understanding the dynamics of species and ecosystems. Permanently marked plants of the bush morning glory, Ipomoea leptophylla (Convolvulaceae), in Nebraska sandhills prairie were censused annually from 1979-1989. While the average annual death rate was 2.6 per 100, virtually all the mortality was among smaller and probably younger plants. Recruitment varied greatly among years. Of plants of known age, the median age at first flowering was 6 yr. After 9 yr 30% had never flowered. Larger size classes flowered more frequently than smaller …


Transformation, Somatic Embryogenesis And Whole Plant Regeneration Method For Glycine Species, Glenn B. Collins, David Hildebrand, Paul A. Lazzeri, Thomas R. Adams, Wayne A. Parrott, Lynn M. Hartweck Jun 1991

Transformation, Somatic Embryogenesis And Whole Plant Regeneration Method For Glycine Species, Glenn B. Collins, David Hildebrand, Paul A. Lazzeri, Thomas R. Adams, Wayne A. Parrott, Lynn M. Hartweck

Plant and Soil Sciences Faculty Patents

A method for somatic embryogenesis of soybean, (Glycine max), Glycine soja and other Glycine species is provided using immature cotyledon tissue, preferably with the embryonic axis removed, comprising culturing said tissue on a medium containing auxin, preferably NAA at a concentration of at least about 15 mg/l. A further method for such somatic embryogenesis is provided wherein the culture medium contains a synergistically acting lowered carbohydrate and auxin concentration. Particularly embryogenic cells of such tissue are identified and improved maceration methods for contacting such cells with regeneration and transformation media are disclosed.

Methods for transforming somatic tissue from …


Nebline, June 1991 Jun 1991

Nebline, June 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news


The Prairie Naturalist Volume 23, No. 2. June 1991 Jun 1991

The Prairie Naturalist Volume 23, No. 2. June 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Sea bloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

SMALLMOUTH BASS SIZE STRUCTURE AND CATCH RATES IN FIVE SOUTH DAKOTA LAKES AS DETERMINED FROM TWO SAMPLING GEARS ▪ C. L. Milewski and D. W. Willis

REPRODUCTION BY FISHES IN A HEADWATER STREAM FLOWING INTO GRAYROCKS RESERVOIR, WYOMING ▪ W. A. Hubert and D. T O’Shea

ENVENOMATION AND ACQUISITION OF CHEMICAL INFORMATION BY PRAIRIE RATTLESNAKES ▪ D. Chiszar, C. Hobika, H. M. Smith, and J. Vidaurri

MOVEMENTS AND HABITAT USE BY WILD TURKEY HENS WITH BROODS IN A GRASSLAND-WOODLAND MOSAIC IN THE NORTHERN …


Miscellaneous Publication 17/91 - Mudas - Model Of An Uncertain Dryland Agricultural System: A Description, R. S. Kingwell, A. D. Bathgate Jun 1991

Miscellaneous Publication 17/91 - Mudas - Model Of An Uncertain Dryland Agricultural System: A Description, R. S. Kingwell, A. D. Bathgate

Farm Systems and Economics research reports

In the early 1980s, the Department of Agriculture developed a mixed integer whole-farm mathematical programming model of the dryland farming system in the eastern wheatbelt of Western Australia (Morrison et al. 1986). The model named MIDAS (Model of an Integrated Dryland Agricultural System) was constructed, tested and scrutinised by a multi-disciplinary team of researchers, advisers, farm management consultants and farmers (Kingwell 1987a). The model described in some detail the biology and finances of the dryland farming system in an average season and calculated profit-maximising farm plans.

MIDAS remains an often used tool in research and extension, being applied to many …


Vitex Mollis H.B. & K., D. Seigler, John E. Ebinger, H. Clarke May 1991

Vitex Mollis H.B. & K., D. Seigler, John E. Ebinger, H. Clarke

Specimens by Name

No abstract provided.


Primary Productivity And Species Composition Of A Reconstructed Wetland In Eastern Kentucky, Eric C. Webb May 1991

Primary Productivity And Species Composition Of A Reconstructed Wetland In Eastern Kentucky, Eric C. Webb

Morehead State Theses and Dissertations

A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Eric C. Webb on May 19, 1991.


Lippia, D. Seigler, John E. Ebinger, H. Clarke May 1991

Lippia, D. Seigler, John E. Ebinger, H. Clarke

Specimens by Name

No abstract provided.


Bumelia Lanuginosa Pers., David S. Seigler, John E. Ebinger, H. Clarke, K. Readel May 1991

Bumelia Lanuginosa Pers., David S. Seigler, John E. Ebinger, H. Clarke, K. Readel

Specimens by Name

No abstract provided.


Maclura Pomifera (Raf.) Schneid., D. Seigler, John E. Ebinger, H. Clarke, K. Readel May 1991

Maclura Pomifera (Raf.) Schneid., D. Seigler, John E. Ebinger, H. Clarke, K. Readel

Specimens by Name

No abstract provided.


Nebline, May 1991 May 1991

Nebline, May 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news


Study Of Ferredoxin And Flavodoxin From Tobacco Leaves And Roots Under Normal And Iron-Stressed Conditions, I-Jen Huang May 1991

Study Of Ferredoxin And Flavodoxin From Tobacco Leaves And Roots Under Normal And Iron-Stressed Conditions, I-Jen Huang

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I purified tobacco leaf ferredoxin from normal and iron-stressed leaves. The oxidized form of ferredoxin from normal leaves had absorption maxima at 268, 327, and 422 nm and a shoulder at 463 nm. The oxidized form of ferredoxin from iron-stressed leaves had absorption maxima at 268 and 329 nm but no absorption maxima in the 400-nm range. Higher ferredoxin content was found with higher chlorophyll content in leaves of the same age.

A protein in tobacco root extract was isolated and found to serve as an electron carrier for ferredoxin-requiring nitrite reduction. This protein had a molecular weight and antigenic …


Hydrogen Uptake Genes And Nitrogen Fixation Efficiency Of Rhizobium Species In Symbiosis With Alfalfa, Chickpea And Pigeonpea, G. Mustafa Sajid May 1991

Hydrogen Uptake Genes And Nitrogen Fixation Efficiency Of Rhizobium Species In Symbiosis With Alfalfa, Chickpea And Pigeonpea, G. Mustafa Sajid

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The plasmids pDN211 and pDNll, isolated from the gene bank of the Rhizobium japonicum strain I-110, have been reported to complement two different Nif+ Hup· (nitrogen fixation positive and hydrogen uptake negative) mutants. A 5.9-kb Hindiii DNA fragment of the cosmid pHU52, isolated from the gene bank of R. japonicum strain 122DES, has been reported to code for the two polypeptide subunits of uptake hydrogenase. To determine homology between the structural genes of uptake hydrogenase of the two strains, a Southern blot of the Hindiii restriction fragments of the plasmids pDN211 and pDN11 was hybridized to the 5.9-kb …


Osmophores, Floral Features, And Systematics Of Stanhopea (Orchidaceae), Kenneth J. Curry, Lorraine M. Mcdowell, Walter S. Judd, William Louis Stern May 1991

Osmophores, Floral Features, And Systematics Of Stanhopea (Orchidaceae), Kenneth J. Curry, Lorraine M. Mcdowell, Walter S. Judd, William Louis Stern

Faculty Publications

The floral fragrance glands (osmophores) of 18 species of Stanhopea and Sievekingia were examined through a series of developmental studies at light and electron microscope levels including late bud stages through postanthesis. Various characters were identified to be of potential systematic value and were recorded for each species. These characters included: texture of the osmophore surface, number of distinct cell layers comprising the osmophore, nature of lipid inclusions in osmophore cells, and presence or absence of plastoglobuli in osmophore amyloplasts. These characters were combined with traditional features of floral lip morphology for cladistic analysis. Sievekingia was the postulated outgroup. Stanhopea …


Nebline, April 1991 Apr 1991

Nebline, April 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news


Β-Ionone Derivatives As Antifungal Agent, Joseph Kuc, Steven D. Salt Mar 1991

Β-Ionone Derivatives As Antifungal Agent, Joseph Kuc, Steven D. Salt

Plant Pathology Faculty Patents

To read this abstract, please download this patent.


Bulletin No 4220 - Growing High Yielding Wheat Crops In The Central Wheatbelt, Michael Perry Mar 1991

Bulletin No 4220 - Growing High Yielding Wheat Crops In The Central Wheatbelt, Michael Perry

Bulletins 4000 -

In this Bulletin we hope to provide you with what we believe is the best and most up-to-date information about growing wheat in your particular environment.

It is now more important than ever for producers to get the most out of their resources of land, labour and capital. The key to doing that is the knowledge to do even better what you probably do well already-growing wheat.


Nebline, March 1991 Mar 1991

Nebline, March 1991

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Ag Update: Agricultural News & Events

Home Extension News

On-the-Grow: Horticulture News & Recommendations

The Cloverline: 4-H News and Events

Extension Calendar

and other extension news


Proceedings Of The 18th Annual Meeting, Southern Soybean Disease Workers (March 20-21, 1991, Lexington, Kentucky): National Perspective On Soybeans, Donald E. Hershman, J. Allen Wrather, Patrick D. Colyer, Gary W. Lawrence, Glenn G. Hammes Mar 1991

Proceedings Of The 18th Annual Meeting, Southern Soybean Disease Workers (March 20-21, 1991, Lexington, Kentucky): National Perspective On Soybeans, Donald E. Hershman, J. Allen Wrather, Patrick D. Colyer, Gary W. Lawrence, Glenn G. Hammes

Southern Soybean Disease Workers: Conference Proceedings

Contents

General session

Presidential address. DE Hershman

Keynote address. P O'Connell

Invited speakers

Major Soybean Diseases of the Midwest and Their Management. TS Abney

Major Soybean Diseases of the Southeast and Their Management. WF Moore

Disease Resistance in the Defense of Yield: A Commercial Breeders Perspective. HL Gabe

Graduate student papers

Effects of potassium fertilization and weed control on the severity.of anthracnose and pod and stem blight of soybeans in Louisiana. FG Barker, GT Berggren, and JP Snow

Inheritance of soybean SDS response in segregating F5 derived lines. WJ Matthews, VN Njiti, PT Gibson, and ML Shenaut

Selection of …


The Prairie Naturalist Volume 23, No. 1. March 1991 Mar 1991

The Prairie Naturalist Volume 23, No. 1. March 1991

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

AGRICULTURAL LAND USE AND MOURNING DOVES IN EASTERN COLORADO: IMPLICATIONS FOR NESTING AND PRODUCTION IN THE GREAT PLAINS ▪ T E. Olson, C. E. Braun, and R. A. Ryder

DISTRIBUTION OF SANDHILL CRANES IN THE NORTH PLATTE RIVER VALLEY 1980 AND 1989 ▪ M. J. Folk and T. C. Tacha

NOCTURNAL BEHAVIOR OF SANDHILL CRANES ROOSTING IN THE PLATTE RIVER, NEBRASKA ▪ B. S. Norling, S. H. Anderson, and W A. Hubert

LEAD POISONING OF A MARBLED GODWIT ▪ L. N. Locke, M. R. …


Review Of Colorado Flora: Eastern Slope By William A. Weber., Robert B. Kaul Feb 1991

Review Of Colorado Flora: Eastern Slope By William A. Weber., Robert B. Kaul

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

All 2260 plant species of eastern-slope Colorado--from the continental divide east to the Nebraska and Kansas borders--can be identified using this book. That figure includes not only the native species but also the numerous introduced ones that survive without cultivation and often provide severe competition for the native flora. Much of Colorado's native plains flora was eliminated in the past century by plowing and by grazing livestock. It is largely replaced by a few durable native and many aggressive exotic species that thrive under those conditions, but remnants of the original flora exist on escarpments and in a few level …