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Full-Text Articles in Life Sciences

Genetic Determinism Of Xanthomonas Arboricola Pv. Pruni (Xap) Resistance, Fruit Quality, And Phenological Traits In Peach And Incorporation Of Marker-Assisted Selection (Mas) In The University Of Arkansas Peach And Nectarine Breeding Program, Terrence James Frett May 2016

Genetic Determinism Of Xanthomonas Arboricola Pv. Pruni (Xap) Resistance, Fruit Quality, And Phenological Traits In Peach And Incorporation Of Marker-Assisted Selection (Mas) In The University Of Arkansas Peach And Nectarine Breeding Program, Terrence James Frett

Theses and Dissertations

For over two decades the incorporation of marker-assisted selection (MAS) has been discussed as an innovative approach to increase peach breeding efficiency. Although hundreds of quantitative trait loci (QTLs) have been identified, only a few have been converted into usable MAS tools. This highlights a disconnect between genomic discoveries and practical application in breeding programs, which has delayed use of MAS.

In this dissertation, three sequential steps were performed with the objective to bridge this gap and develop breeding-relevant DNA tests for MAS of fruit bacterial spot resistance (Xap1 and Xap6), fruit quality [blush (Rf), acidity (D), and acidity and ...


Vegetable Growing : A Guide For Home Gardeners In Western Australia, Department Of Agriculture, Western Australia Jan 2009

Vegetable Growing : A Guide For Home Gardeners In Western Australia, Department Of Agriculture, Western Australia

Bulletins 4000 -

DAFWAs popular publication about vegetable growing for home gardeners.


The Banksia Production Manual, Department Of Agriculture And Food, Western Australia Apr 2007

The Banksia Production Manual, Department Of Agriculture And Food, Western Australia

Bulletins 4000 -

There has long been a need for a Banksia Production Manual. The benefit of such a manual is the ability to bring together the material written and published in a range of other publications and reports.

As far as possible the latest information has been reviewed and incorporated. Some of these areas have a limited set of information available and are accordingly brief. We have tried to incorporate grower information where possible to ensure that what is discussed has a practical grounding. While regulations and information was correct at the time of publication (April 2007), it is recommended that people ...


Three Amino Acid Loop Extension (Tale) Transcription Factors That Regulate Potato (Solanum Tuberosum L) Tuberization , Hao Chen Jan 2003

Three Amino Acid Loop Extension (Tale) Transcription Factors That Regulate Potato (Solanum Tuberosum L) Tuberization , Hao Chen

Retrospective Theses and Dissertations

Homeodomain (HD) proteins play an important role in cell fate determination and body plan definition by binding to regulatory regions of key target genes. Using the yeast two-hybrid system and a potato KNOX HD protein, POTH1, as bait, seven distinct interacting proteins have been identified from a potato (Solanum tuberosum L.) stolon library. All seven cDNAs belong to the BEL1-like family of transcription factors. Through deletion mutation analysis, we identified a protein-binding domain present in the carboxy-end of the KNOX domain of POTH1. The protein-binding domain in the BEL protein is located in the amino-terminal half of the 120-residue conserved ...


Induction Of Tuber Gene Expression In Solanaceous Species By Methyl Jasmonate And Wounding , Tsu-Hwie Annie Liu Jan 1995

Induction Of Tuber Gene Expression In Solanaceous Species By Methyl Jasmonate And Wounding , Tsu-Hwie Annie Liu

Retrospective Theses and Dissertations

Two major research approaches have been used to study the tuber-related gene expressions in different Solanaceous species. The first part of the research is using Agrobacterium-mediated gene transformation to study potato proteinase inhibitor II (pinII) gene which highly expressed in developing tuber in a wild nontuberizing specie Solanum brevidens. To establish the transformation system, leaf pieces of in-vitro cultured S. brevidens were cocultivated with Agrobacterium tumefaciens that contained nptII and GUS genes on the disarmed plasmid pBI121. Independent transgenic shoots were regenerated from both solidified and liquid medium with kanamycin. Agrobacterium strains GV2260 resulted in a higher transformation frequency than ...


Investigating Low Temperature Tolerance And Winter Protection Systems For Herbaceous Perennials , Jeffery Kenneth Iles Jan 1993

Investigating Low Temperature Tolerance And Winter Protection Systems For Herbaceous Perennials , Jeffery Kenneth Iles

Retrospective Theses and Dissertations

A series of experiments was conducted to identify appropriate winter protection systems for container-grown herbaceous perennials and to investigate the low-temperature tolerance of several species of herbaceous perennials. Results from a field study indicate polyethylene/woodchip and polyethylene/straw/polyethylene structureless covers effectively moderated temperature extremes and should be favored when overwintering known cold-sensitive species. However, they must be removed before the onset of warm, sunny weather to prevent development of etiolated tissue. A translucent thermoblanket provided comparable protection while prohibiting tissue etiolation. During subsequent laboratory freezing studies with containerized plants, -10C was identified as the critical low temperature for ...


Relationships Between Ethylene Biosynthetic Pathway Metabolites During Banana Fruit Ripening , Sylvio Luis Honorio Jan 1991

Relationships Between Ethylene Biosynthetic Pathway Metabolites During Banana Fruit Ripening , Sylvio Luis Honorio

Retrospective Theses and Dissertations

An high-performance liquid chromatography (HPLC) procedure was developed for 1-aminocyclopropane-1-carboxylic acid (ACC) quantitation in banana fruit. This alternative method overcame difficulties encountered in previously published, nonHPLC procedures, and it is comparable to another HPLC procedure published recently. HPLC in a linear gradient mode yielded baseline separation of ACC from other amino acids. It was found that ACC content decreased concomitantly with an increase in ethylene (C[subscript]2H[subscript]4) production during the early stages of banana ripening. Conversely, a subsequent decrease in C[subscript]2H[subscript]4 production may have been caused by decreased ACC content or some unknown ...


Purification And Characterization Of The 22-Kilodalton Potato Proteinase Inhibitors , Sang-Gon Suh Jan 1990

Purification And Characterization Of The 22-Kilodalton Potato Proteinase Inhibitors , Sang-Gon Suh

Retrospective Theses and Dissertations

Three abundant proteins of approximate molecular weights of 22, 23, and 24 kilodalton (kD) were purified from potato (Solanum tuberosum L.) tubers by DEAE cellulose and CM-52 cellulose ion exchange column chromatography, electroelution, and high-pressure liquid chromatography (HPLC). Antibodies specific to the gel purified 22-kD protein were prepared. Immunoblot analysis showed that the 22-, 23-, and 24-kD proteins were immunologically related and that these proteins were present in tubers and as higher molecular weight forms in leaves, but were not detectable in stems, roots, and stolons. The ratios of amino acid composition of the three purified proteins were equivalent, and ...


Storage Protein Degradation And Proteolytic Enzyme Activities During Germination Of Water Stressed Impatiens Seeds , Mehrassa Khademi Jan 1990

Storage Protein Degradation And Proteolytic Enzyme Activities During Germination Of Water Stressed Impatiens Seeds , Mehrassa Khademi

Retrospective Theses and Dissertations

Water uptake of impatiens (Impatiens wallerana Hook. f. cv. Super Elfin Coral) seed was measured an an increase in fresh weight every 24 hr during 144 hr of germination. Seeds absorbed most of the water required for germination within the first 3 hr of imbibition, and thus germinated at 60 to 67% moisture on a dry weight basis. Germination started at 48 hr and was complete by 96 hr at 25C. Three distinct groups of storage proteins with estimated molecular weights of 35, 33, and 31 kilodaltons (kd); 26, 23, 21 kd; and two bands less than 14 kd were ...


Effects Of Low-Oxygen Atmospheres On Impatiens Seed Germination , Paul Thomas Karlovich Jan 1989

Effects Of Low-Oxygen Atmospheres On Impatiens Seed Germination , Paul Thomas Karlovich

Retrospective Theses and Dissertations

The effects of low-oxygen atmospheres on the germination of Impatiens wallerana Hook. f. were tested and related to germination in the plug-production system. The cultivars tested could germinate partially under water, but the germination rate was slower and the germination meantime was longer for all cultivars but one. There was little variability among cultivars germinated on blotter paper, but much greater variability was found when the seeds were germinated under water. Although impatiens seeds could germinate when submerged, they were not able to germinate in seven days at 0% oxygen, and essentially no germination occurred in 3% oxygen. At oxygen ...


Examination And Development Of An Essential Oil Industry In The Ord River Irrigation Area Of North Western Australia, Jean M.V. Bonnardeaux Jan 1989

Examination And Development Of An Essential Oil Industry In The Ord River Irrigation Area Of North Western Australia, Jean M.V. Bonnardeaux

Research Reports

The project aimed at establishing an essential oil industry in the Ord River Irrigation Area (ORIA). This industry is particularly suited to the ORIA where transport costs often prohibit the development of some agricultural products. The oils are concentrated and highly valuable. In addition, the ORIA with its abundant water and high temperatures presents a unique opportunity to grow a wide range of crops for the production of essential oils used by the food, medicinal and perfume industries. Australia has therefore an opportunity to initiate a new industry capable of replacing imports and gaining access to world markets representing a ...


Physiological Effects Of Silver Thiosulfate, (Aminooxy)Acetic Acid, And Malonate Pulse Treatments On The Inhibition Of Ethylene Biosynthesis And Mode Of Action In Carnations , Ruey-Song Lin Jan 1988

Physiological Effects Of Silver Thiosulfate, (Aminooxy)Acetic Acid, And Malonate Pulse Treatments On The Inhibition Of Ethylene Biosynthesis And Mode Of Action In Carnations , Ruey-Song Lin

Retrospective Theses and Dissertations

Data concerned with the inhibition of ethylene (C[subscript]2H[subscript]4) biosynthesis and mode of action by pulsing carnations with silver thiosulfate (STS), (aminooxy)acetic acid (AOA), and malonate (MA) are presented. (Aminooxy)acetic acid at 12 [mu]mole/flower extended vase life to 15.1 days, STS at 1 [mu]mole/flower extended vase life to 15.3 days, and MA at 1 [mu]mole/flower shortened vase life to 8.8 days compared with 10.3 days for the water control. (Aminooxy)acetic acid and STS inhibited the activity of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase, and this resulted ...


Biosynthesis Of 1-Aminocyclopropane-1-Carboxylic Acid And Ethylene From [Delta]-Aminolevulinic Acid In Ripening Tomato Fruits , Diaa El-Deen Ahmed El-Rayes Jan 1987

Biosynthesis Of 1-Aminocyclopropane-1-Carboxylic Acid And Ethylene From [Delta]-Aminolevulinic Acid In Ripening Tomato Fruits , Diaa El-Deen Ahmed El-Rayes

Retrospective Theses and Dissertations

A new pathway for ethylene (C[subscript]2H[subscript]4) biosynthesis, which utilizes [delta]-aminolevulinic acid (ALA) as a precursor of 1-aminocyclopropane-1-carboxylic acid (ACC), the immediate precursor of C[subscript]2H[subscript]4, is presented. ALA enhanced ACC accumulation to 410% and C[subscript]2H[subscript]4 production to 232% of the control. The C[subscript]2H[subscript]4 production rate varied with the ALA concentration and the stage of tomato fruit development. As the ALA concentration increased from zero to 40 mM, the C[subscript]2H[subscript]4 production rate increased. Both treated and untreated pericarp discs from fruits ...


Regulation Of Kentucky Bluegrass (Poa Pratensis L) Morphogenesis By Growth Retardants And Exogenous Ethylene , Kenneth Lynn Diesburg Jan 1987

Regulation Of Kentucky Bluegrass (Poa Pratensis L) Morphogenesis By Growth Retardants And Exogenous Ethylene , Kenneth Lynn Diesburg

Retrospective Theses and Dissertations

Inconsistent efficacy has limited the application of turfgrass growth retardants to low-traffic, less-visible areas. More information is needed regarding the environmental conditions in which plants are more sensitive to growth regulation;A three-year field study was conducted to determine if the seasonal growth phases of Poa pratensis had any effect on plant receptivity to five growth retardants. Mefluidide and amidochlor were more effective in spring, flurprimidol in summer, while ethephon and paclobutrazol were equally effective across seasons. The greatest differences in growth retardation appeared between the spring reproductive and summer vegetative growth phases. It is concluded, therefore, that the transition ...


Effects Of Calcium Nutrition And Atmospheric Carbon Dioxide, Oxygen, And Ethylene On The Growth And Quality Of Mungbean (Vigna Radiata (L.) Wilczek) Sprouts , Siti Hajar Ahmad Jan 1985

Effects Of Calcium Nutrition And Atmospheric Carbon Dioxide, Oxygen, And Ethylene On The Growth And Quality Of Mungbean (Vigna Radiata (L.) Wilczek) Sprouts , Siti Hajar Ahmad

Retrospective Theses and Dissertations

Hypocotyl-hook translucency of mungbean sprouts is due to calcium deficiency in the hook region of the hypocotyl. The disorder was not associated with any pathogenic organism, and the addition of calcium to the irrigation water at concentrations of 50 or more mg calcium/liter overcame the disorder. Apparently, the supply of calcium in the seed either is not sufficient to maintain the rapid growth of sprouts in the dark, or the calcium cannot be translocated to the hypocotyl hook as rapidly as it is needed;The growth of the mungbean sprouts followed a typical sigmoid pattern, but the growth rate ...


The Effects Of Osmotically-Induced Water Stress And Stripe Smut (Ustilago Striiformis) Or Flag Smut (Urocystis Agropyri) On Kentucky Bluegrass (Poa Pratensis 'Merion') , Jeffery Lynn Nus Jan 1983

The Effects Of Osmotically-Induced Water Stress And Stripe Smut (Ustilago Striiformis) Or Flag Smut (Urocystis Agropyri) On Kentucky Bluegrass (Poa Pratensis 'Merion') , Jeffery Lynn Nus

Retrospective Theses and Dissertations

Growth, water relations, and water economy of Poa pratensis 'Merion' were studied as they were affected by infection by Ustilago striiformis or Urocystis agropyri and/or osmotically-induced water stress. Total and leaf weight of U. striiformis-infected plants growing in nutrient solution were greater than healthy plants, although increases were lost under increasing water stress. Root weight and root-shoot ratios were lower in U. striiformis-infected plants than those in healthy plants over all levels of water stress. Total, leaf, and root weights, and root-shoot ratios of U. agropyri-infected plants grown in nutrient solution decreased compared to healthy plants, and the decreases ...


Control Of Iron Chlorosis, Terry A. Tindall Jan 1982

Control Of Iron Chlorosis, Terry A. Tindall

Archived Gardening Publications

Publication discusses the causes of iron deficiency in plants and how to best control it.


The Influence Of Growth Regulators On The Anatomical, Morphological Development And Quality Of Apple Fruits , Ayed Issa Al-Wir Jan 1978

The Influence Of Growth Regulators On The Anatomical, Morphological Development And Quality Of Apple Fruits , Ayed Issa Al-Wir

Retrospective Theses and Dissertations

No abstract provided.


Regeneration In Various Types Of Apple Wood , Vernon Theodore Stoutemyer Jan 1937

Regeneration In Various Types Of Apple Wood , Vernon Theodore Stoutemyer

Retrospective Theses and Dissertations

Two distinct growth phases were demonstrated to exist in apple trees. These phases were closely related to the ease of regeneration of roots on stems. Stem cuttings of wood in the mature phase were very difficult to root without special treatments, while those made from shoots in the juvenile phase rooted very readily;The juvenile condition was recognized by thinner leaves with much less pubescence. Anthocyanin production was much more abundant in juvenile shoots. In some species of apple the shape of the leaf changed with maturity from an entire to a lobed form;Shoots having the juvenile characteristics of ...


The Growth Of Cuttings As Influenced By Their Chemical Composition , Valeriano C. Calma Jan 1931

The Growth Of Cuttings As Influenced By Their Chemical Composition , Valeriano C. Calma

Retrospective Theses and Dissertations

No abstract provided.