Divergência genética entre acessos de cártamo (Carthamus tinctorius L.)
This study aimed to estimate the genetic diversity of 16 accessions of safflower (Cathamus tinctorius L.) derived from the Mato Grosso Cotton Institute – IMA-MT through multivariate procedures to group similar genotypes, based on the evaluation of their production components and their respective yie...
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| Tipo de recurso: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Brasil |
| Institución: | Universidade Estadual Paulista (UNESP) |
| Repositorio: | Repositório Institucional da UNESP |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.unesp.br:11449/108844 |
| Acceso en línea: | http://hdl.handle.net/11449/108844 |
| Access Level: | acceso abierto |
| Palabra clave: | Cartamo – Melhoramento genético Plantas cultivadas - Genética Plantas oleaginosas - Métodos estatisticos Heterose |
| Sumario: | This study aimed to estimate the genetic diversity of 16 accessions of safflower (Cathamus tinctorius L.) derived from the Mato Grosso Cotton Institute – IMA-MT through multivariate procedures to group similar genotypes, based on the evaluation of their production components and their respective yields. An experiment using a randomized block design with 3 replications was implemented in the year 2012, and the treatments consisted of 16 accessions of safflower. The evaluated parameters were: grain yield, 1000 grain weight, plant height, stem diameter, number of branches per plant, number of chapters per plant and oil content. With the data obtained, a test of means was performed by the Scott - Knott test at 5% probability. Estimates of genetic parameters were obtained based on the expected mean squares of variance analysis. Considering all the characters at once, we estimated the genetic divergence among accessions of safflower by Mahalanobis distance, and their respective clusters by Tocher method. The existence of genetic variability was observed among accessions of safflower for most traits evaluated, allowing promote future genetic gains, and the identification of 6 different groups, giving conditions to explore good combinations of crosses between accessions in order to achieve maximum heterosis. |
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