Análisis e interpretación de la importancia de la heterosis en especies vegetales
Vegetable production basically depends on the genetic characteristics, the interaction of these with the environmental environment and with the agronomic practices carried out, the narrow genetic base of many of the cultivated species influences the increase of said variability and therefore the gen...
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| Format: | bachelorThesis |
| Udgivet: |
2020
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| Online adgang: | http://dspace.utb.edu.ec/handle/49000/8499 |
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Tilføj Tag | Summary: | Vegetable production basically depends on the genetic characteristics, the interaction of these with the environmental environment and with the agronomic practices carried out, the narrow genetic base of many of the cultivated species influences the increase of said variability and therefore the generation of new planting alternatives. Ignorance and lack of analysis of genetic parameters such as heterosis cause not being able to exploit the benefits provided by a correct genetic recombination.Agriculture is a necessary and millenary industry that underwent great changes in the 20th century, one of which was the introduction on the market of F1 hybrid seeds, which farmers buy every year instead of using those obtained in one of their own previous harvests. Commercial F1 hybrid seeds yield plants that show hybrid vigor, a phenomenon of great economic relevance.The methodology used to carry out this work was carried out based on: the reading, analysis, synthesis and exploration of various bibliographic sources such as: books, graduate theses, journals, scientific articles and web pages. The purpose of gathering information is to analyze and interpret the importance of the analysis of heterosis in plant species, with a view to understanding genetic recombination in the different generations of the processes of obtaining new varieties or plant hybrids, using the traditional method of crosses or hybridization. For the above detailed it is determined that in a plant genetic improvement program it is necessary to use genetically contrasting progenitors or genotypes, Heterosis can be defined as the increase in vigor, size, productivity, development speed, resistance to diseases, insect pests, climatic rigors of any kind; manifested by hybrid organisms, with respect to their corresponding endogamous progenitors. |
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