A close positive relationship was shown to exist between leaf dry weight and yield, while leaf position did not appear to be important.
Cold temperatures during both stages increased yield and number of fruit and decreased mean fruit weight. The leaf and root tissues were shown to be in competition with the reproductive tissues for dry matter.
It was suggested that low temperatures produced an enhanced supply of assimilates to the apex, which then initiated more flowers and that cold temperatures appeared to influence yield solely due to its effect on flower number.
The remaining investigations were devoted to the relationship between vegetative and reproductive growth source sink relationship in the tomato plant.
The treatments consisted of 3 leaf levels, 2 pollination levels and 3 truss numbers in factorial combination. The response of the plants to a change in nitrogen level suggested that some of the increase in yield due to exposure of young plants to cold temperatures, may be due to the change in temperature level.
By allowing plants to develop different numbers of trusses and then examining the effects of these treatments on the yield of a particular truss, competition effects between trusses were shown to exist with all trusses except truss 1. Export to EndNote Abstract During the propagation of tomato plants a high and a low level of nitrogen was applied in factorial combination before and after initiation of truss 1.
The studies on competition effects between trusses indicated that the net assimilation rate in the tomato plant can be depressed by lack of sink strength. Initially the plants grew faster and cropped earlier in response to high nitrogen, but there were no differences in either the final amount of growth or the final crop.
The nitrogen Tomato thesis indicated that competition occured between fruit trusses for assimilates. Warm and cold temperatures were therefore applied in factorial comination before flower initiation 9 nights and for a subsequent period 14 nights which included the flower initiation stage, with single-truss tomato plants.
Shoot growth was reduced as yield increased and it was suggested that competition occurs for assimilates between the leaves and fruit.
Aspects of the source sink relationship in the tomato plant are discussed. The final investigation was designed to demonstrate that the yield of truss 1 could be reduced by competition for assimilates. By the use of leaf removal treatments a study on the importance of the amount and position of leaf tissue on the yield of single-truss tomato was carried out.
Flower number and earliness of flowering of certain trusses was increased by the high level of nitrogen applied after initiation. It was suggested that a contributing factor to the latter response was that, where a change in nitrogen level was involved, the change from high nitrogen to low nitrogen produced a more productive plant response than when the sequence of applications was reversed.
Total yield was increased by increases in leaf level when sink strength was high and by additional trusses or extra pollination when the amount of leaf tissue was adequate. Evidence was presented in the last three studies that economic yield in the tomato plant can be limited simultaneously by lack of both source and sink strength.Plant Breeding Graduate Thesis Library.
Graduates. Name Thesis/Dissertation Title Advisor Career; Molecular Basis of the Tomato Green Shoulder Phenotype, Its Role in Fruit Nutritional Quality and Characterization of.
Characterization of Management and Environment Effects on Cultivated Tomatoes THESIS Presented in Partial Fulfillment of the Requirements for the Degree Master of. tomato cover percentage by treatments. Average weed cover According to the Bonferroni-method, average weed cover percentage of the six experimental years justified that untreated control (1) is the worst solution regarding weediness.
Tomato does not cover the soil enough to withhold the spreading of weeds. DEFENCE GENE EXPRESSION IN THE TOMATO-VERTICILLIUM PATHOSYSTEM A Thesis Presented to The Faculty of Graduate Studies of The University of Guelph by CHRISTIAN DANVE M.
CASTROVERDE. Audience Reviews for Thesis Amenábar's low-budget debut stands out as the first display of his talent as both a writer and director, a suffocating thriller that is not only extremely tense and suspenseful but also respects the viewer's intelligence and keeps us 71%.
Thesis: The two main types of traditional Italian tomato sauce are the Sunday Meat Sauce (Gravy) and the Marinara. I-The first and most common type of sauce is the Meat or Sunday Sauce.
I-The first and most common type of sauce is the Meat or Sunday Sauce.Download