Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"potato tuber"”.
-
StCKP and potato tuber dormancy
[Restricted]
-
Sucrose breakdown in the potato tuber
In dieser Arbeit wurden verschiedene Ansätze verfolgt, um das Verständnis des Saccharose-zu-Stärke Stoffwechselweges in sich entwickelnden Kartoffelknollen zu untersuchen. Zunächst wurde ein induzierbares Genexpressions-System aus dem Schimmelpilz Aspergillus nidulans für die Untersuchung des …
-
Cytokinin interconversion by StCKP1 controls potato tuber dormancy
Worldwide production of potatoes is in excess of 350 million metric tonnes per annum, of which 60% is intended for human consumption. Since the period of tuber dormancy before tuber buds sprout is usually shorter than the optimal market storage period, control of sprouting is essential. To prolong …
-
Role of Fatty Acid omega-Hydroxylase 1 and Abscisic Acid in Potato Tuber Suberin Formation
… a barrier to water loss and pathogen attack. In potato, more than 65% of suberin monomers undergo ω-hydroxylation, representing a major class of fatty acids in the final biopolymer. The ω-hydroxylation reaction is catalyzed by Cytochrome P450 (CYP) proteins, of which few have been characterized …
-
Molecular mechanisms of pathogenesis incited by Erwinia carotovora subsp. carotovora
… pDR1 or plasmid pDR30 is unable to macerate potato tuber slices. However, HB101 containing plasmids pDR1 and pDR30 can cause limited maceration of potato tuber slices. There appears to be a genetic interaction between plasmids pDR1 and pDR30 in maceration of potato tuber tissue. However, the …
-
Nondestructive Detection of Hollow Heart in Potatoes Using Ultrasonics
… techniques were used to detect hollow heart in potatoes nondestructively. Fifty Russet Burbank potatoes were evaluated physically and sonically. A pair of dry-coupling 50-kHz ultrasonic transducers were used to generate an ultrasonic pulse with a power level of 0.22 W for the test of acoustic …
-
Genetic engineering for pest resistance in potato (Solanum tuberosum L.)
Insect pests of potato cause significant losses of yields under field and storage conditions. Conventional breeding techniques for targeting genes of interest is usually laborious and time-consuming. An alternative way for targeting genes of interest into the plant genome consists of …
-
The Relation of Respiration, Transpiration, and Loss of Weight to Surface Area and Number of Lenticles in Potato Tubers
… work has been done on the respiration of potato tubers most of it has been concerned with internal changes. Some very interesting correlations have been secured but the more recent work, particularly that of Bennet and Bartholomew (8) points to the permeability of the epidermis as the big …
-
Erwinia carotovora extracellular proteases: characterization and role in soft rot
… causes soft rot on several crops, including potato. Maceration of potato tuber tissue is caused by secreted pectolytic enzymes. Other cell-degrading enzymes may also have roles in pathogenesis, including cellulases, phospholipases, and protease(s). The objectives of this research were to (1) …
-
Studio dei meccanismi molecolari coinvolti nel determinismo sintomatologico di piante infette da virus e virus-satelliti
… of PVYNTN strains present in Italy and causing potato tuber necrosis. This, to prevent their spread in the field and to avoid severe yield losses, especially in seed potato production. We tried to localize the particular genomic region responsible for tuber necrosis. To this purpose, we carried …
-
The relevance of adenylate levels and adenylate converting enzymes on metabolism and development of potato (Solanum tuberosum L.) tubers
… of adenylates on metabolism and development of potato (Solanum tuberosum) by using reverse genetics and biochemical approaches. To study the short and long term effect of cellular ATP and the adenylate energy charge on potato tuber metabolism, an apyrase from Escherichia coli targeted into the …
-
Gene regulation in a pathogen-plant interaction: soft rot erwinias versus potato tubers
… secreted by the bacteria. I am interested in potato (Solanum tuberosum) soft rot because it is of agricultural importance and it represents an ideal model system for understanding molecular events in plant-pathogen interactions. Much has been learned in vitro about the molecular genetics of …
-
Application of silicon to improve yield and quality of potatoes (Solanum Tuberrosum L.)
The potato (Solanum tuberosum L.) crop serves as a staple food worldwide and is capable of reducing the world’s food shortages because unlike cereals and other agricultural crops, it is less affected by prices in the international markets. Research on alleviation of food crises suggested root and …
-
Pectic methyl and non-methyl esters and the environmental implications of methanol emissions from plants
… non-methyl ester groups and the deterioration of potato tuber texture during the period of storage following harvest was explored in two potato cultivars using titrimetric techniques and atomic absorption spectrometry. Pectic methyl ester groups in plant material are a major reservoir of methanol …
-
Dissecting the Transcriptional Regulatory Network Underlying Plant Wound Suberin Biosynthesis
Between 20-40% of cultivated potatoes are lost during storage equating to approximately $1.2 billion in lost potential revenue each year. Wounding during mechanical harvesting and post-harvest handling results in tuber desiccation and provides an entry point for pathogens. Poor wound healing is the …
-
First results on the assessment of impact damage of vegetables by means of the FEM approach
… (ATB): when implanted into a real product like a potato tuber, it is able to measure the accelerations at the centre of the fruit deriving from a impact. This PhD Thesis represents a first contribution on the study of mechanical impacts of vegetables (potato tubers), arising from mechanical …
-
Herbicide-based Weed Management Systems for Potato (<i>Solanum tuberosum</i>) and Wheat (<i>Triticum aestivum</i>) and Growth and Reproductive Characteristics of Smooth Pigweed (<i>Amaranthus hybridus</i>)
… of herbicide-based weed management programs in potato (<i>Solanum tuberosum</i> L.) and winter wheat (<i>Triticum aestivum</i> L.) as well as investigations of the biological characteristics of smooth pigweed (<i>Amaranthus hybridus</i>), a troublesome species in many crops. Sulfentrazone is an …
-
GC-TOF-MS basierte Analyse von niedermolekularen Primär- und Sekundärmetaboliten agrarwirtschaftlich bedeutsamer Nutzpflanzen
Die Qualität von Nutzpflanzen ist von zahlreichen Einflussfaktoren wie beispielsweise Lagerbedingungen und Sorteneigenschaften abhängig. Um Qualitätsmängel zu minimieren und Absatzchancen von Nutzpflanzen zu steigern sind umfangreiche Analysen hinsichtlich ihrer stofflichen Zusammensetzung …
-
The effect of spent mushroom compost on soil conditions and plant growth
… was applied without inorganic fertilizer, and potato yield was increased irrespective of fertilizer use (i.e. fresh yield increases of 38%, 82-96% & 26-38% respectively for corn cob, cabbage head & potato tubers). Inorganic fertilizer increased crop yield more than did SMC, except for the …