Evaluating the yield potential of hybrid seeds of lettuce (Lactuca sativa L.) plants in the next growing seasons
Cardiff Metropolitan University
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Vegetables are an important part of daily diet for the most of the people globally. The demand for those products are unstoppable and increases day by the day, when the conscious of the people change about health and the environmental sensitivity issues. Global scientists already rang the bell of warning, about the safety of our nature environment and about this kind of concerns, a big conflict appeared inside the international production of agricultural products among the producers. That conflict is about to cover the needs of the huge market of vegetable products. The idea was that the tradition varieties of seeds cannot produce enough to cover the market needs, so people would hungry. Scientists develop the new all known "hybrids" varieties in order to produce more. Indeed there is lot of benefits of those hybrids analyzed in continue. The controversial part is the fame that from hybrid plants cannot harvest seeds capable to produce in the next growing season. The purpose of that dissertation lies upon the doubt of this principle. This Thesis is the beginning of an academic effort to produce pioneer knowledge and to help the work of any producer of this specific way of cultivation over the years and save money to the farmers. For the needs of the paper, an experiment was established on a greenhouse conditions with lettuce (Lactuca sativa L.) plantation of three varieties (Romaine, Regina Di Maggio & Green leaf lettuce). Each one of them will be evaluated according the growth stage and the behaviour to the environment. Also will compared with the hybrid parent plant, in order to notify the differences. Measurements are vary, tools of Precision Agriculture was used, like the GreenSeeker® which measures the Normalized Difference Vegetation Index (NDVI) levels of the plants, the SPAD® Metter which measure the relative levels of chlorophyll of the leaves. Also analyses of soil’s pH, electrical conductivity (EC) and organic matter were conducted in the Precision agriculture Laboratory of Perrotis College, as well as the fresh weight of plants on three stages till the final harvest was measured The results of this study are aiming to help internationally the vegetable producers, in order to minimize the production expenses and as well this leading to lower prices of the products across the markets.
BSc (Hons) Environmental Systems Management
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