Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation
Removal of lettuce basal leaves is a technique used by the seed industry; however, the effects on seed production and physiological potential are unknown. Genetic dissimilarity is fundamental in the identification of individuals in terms of traits of interest, although it is rarely considered in re...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Eduem (Editora da Universidade Estadual de Maringá)
2022-09-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/56518 |
| _version_ | 1811272366331789312 |
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| author | Hugo Cesar Rodrigues Moreira Catão Gabriel Mascarenhas Maciel Luiz Antonio Augusto Gomes Ana Carolina Silva Siquieroli José Magno Queiroz Luz Luciano Dias Cabral Neto |
| author_facet | Hugo Cesar Rodrigues Moreira Catão Gabriel Mascarenhas Maciel Luiz Antonio Augusto Gomes Ana Carolina Silva Siquieroli José Magno Queiroz Luz Luciano Dias Cabral Neto |
| author_sort | Hugo Cesar Rodrigues Moreira Catão |
| collection | DOAJ |
| description |
Removal of lettuce basal leaves is a technique used by the seed industry; however, the effects on seed production and physiological potential are unknown. Genetic dissimilarity is fundamental in the identification of individuals in terms of traits of interest, although it is rarely considered in relation to seeds that are tolerant to thermoinhibition. The aim of this study was to ascertain the relationship between defoliation of lettuce plants and seed yield/physiological quality, as well as the genetic dissimilarity among genotypes with regard to seed thermoinhibition. We used 35 lines of biofortified lettuce, the cultivars Uberlândia 10000, Belíssima, UFU MC BIOFORT1, and Everglades (tolerant to thermoinhibition), and Grand Rapids and Verônica (susceptible to thermoinhibition). The seed yield and physiological quality of the genotypes with and without defoliation were evaluated, artificially aged, and germinated at four temperatures in a factorial arrangement. The genetic dissimilarity was estimated by Tocher graphing and the UPGMA clustering method, based on the Mahalanobis generalized distance (D 2 ii). Four UFU genotypes and Grand Rapids had high seed yields. With removal of basal leaves, there was higher seed yield per plant and there was an effect on their physiological quality. The genotypes exhibited genetic variability for thermoinhibition, with UFU-86#2#1#1 and Everglades showing similar performance.
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| first_indexed | 2024-04-12T22:38:58Z |
| format | Article |
| id | doaj.art-271d4182cad84b1da9b5685e18cb3901 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-04-12T22:38:58Z |
| publishDate | 2022-09-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-271d4182cad84b1da9b5685e18cb39012022-12-22T03:13:47ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212022-09-0145110.4025/actasciagron.v45i1.56518Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation Hugo Cesar Rodrigues Moreira Catão0Gabriel Mascarenhas Maciel1Luiz Antonio Augusto Gomes2Ana Carolina Silva Siquieroli3José Magno Queiroz Luz4Luciano Dias Cabral Neto5Universidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de UberlândiaUniversidade Federal de Uberlândia Removal of lettuce basal leaves is a technique used by the seed industry; however, the effects on seed production and physiological potential are unknown. Genetic dissimilarity is fundamental in the identification of individuals in terms of traits of interest, although it is rarely considered in relation to seeds that are tolerant to thermoinhibition. The aim of this study was to ascertain the relationship between defoliation of lettuce plants and seed yield/physiological quality, as well as the genetic dissimilarity among genotypes with regard to seed thermoinhibition. We used 35 lines of biofortified lettuce, the cultivars Uberlândia 10000, Belíssima, UFU MC BIOFORT1, and Everglades (tolerant to thermoinhibition), and Grand Rapids and Verônica (susceptible to thermoinhibition). The seed yield and physiological quality of the genotypes with and without defoliation were evaluated, artificially aged, and germinated at four temperatures in a factorial arrangement. The genetic dissimilarity was estimated by Tocher graphing and the UPGMA clustering method, based on the Mahalanobis generalized distance (D 2 ii). Four UFU genotypes and Grand Rapids had high seed yields. With removal of basal leaves, there was higher seed yield per plant and there was an effect on their physiological quality. The genotypes exhibited genetic variability for thermoinhibition, with UFU-86#2#1#1 and Everglades showing similar performance. https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/56518Lactuca sativa L.; defoliation; seed quality; thermodormancy; genetic variability. |
| spellingShingle | Hugo Cesar Rodrigues Moreira Catão Gabriel Mascarenhas Maciel Luiz Antonio Augusto Gomes Ana Carolina Silva Siquieroli José Magno Queiroz Luz Luciano Dias Cabral Neto Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation Acta Scientiarum: Agronomy Lactuca sativa L.; defoliation; seed quality; thermodormancy; genetic variability. |
| title | Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| title_full | Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| title_fullStr | Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| title_full_unstemmed | Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| title_short | Genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| title_sort | genetic dissimilarity for thermoinhibition in seeds of lettuce lines after defoliation |
| topic | Lactuca sativa L.; defoliation; seed quality; thermodormancy; genetic variability. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/56518 |
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