Banca de DEFESA: Andressa Alves Cabreira dos Santos

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : Andressa Alves Cabreira dos Santos
DATA : 06/07/2023
HORA: 14:00
LOCAL: Cáceres
TÍTULO:

Development of Carthamus tinctorius L. genotypes in Cáceres- MT. 

PALAVRAS-CHAVES:

Safflower; genetic diversity; genotype selection.

PÁGINAS: 50
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Melhoramento Vegetal
RESUMO:

Carthamus tinctorius L. is an annual oilseed belonging to the Asteraceae family, of interest to agriculture due to the versatility of its raw material with employment in the food, textile, and pharmaceutical industries. It is recognized for the high quality of the oil produced and its favorable agronomic characteristics to adverse conditions, such as tolerance to drought and cold, which can become an alternative crop for periods with higher risk of water shortage. The objective of this work was to evaluate the agronomic performance of safflower genotypes based on agronomic characteristics in order to select genitors. The experiment was conducted in the experimental area of the Laboratory of Genetic Resources & Biotechnology - LRG&B, linked to the Department of Agronomy of the State University of Mato Grosso, Campus of Caceres, where 30 safflower genotypes from the Germplasm Collection were evaluated in a randomized block design, with three repetitions via eight agronomic characteristics. The data were submitted to variance analysis and multivariate analysis, where the genetic divergence was estimated by the generalized Mahalanobis distance (D²_ii') using the relative importance of the characters and the Tocher grouping methods, hierarchical UPGMA, and 3D projection. The results indicated significant differences at 1 and 5% probability for the evaluated characteristics, showing the existence of genetic variability among the safflower genotypes. The variables ALTP and DMC were the ones that presented the greatest contribution to the genetic divergence among the 30 genotypes. Tocher's optimization, hierarchical UPGMA and 3D projection methods showed similar clusters in 90%. The genotypes PI 572450 and PI 613382 the most divergent (D²_ii'= 62.84), however, the lowest divergence was observed between the genotypes PI 306844 and PI 401475 with a distance of D²_ii'= 1.84. The genotypes PI 613419, PI 343930, PI 572450 and PI 613382 showed better performance for the evaluated traits and higher genetic dissimilarity, suggesting potential to be used in a breeding program involving future crosses for the safflower crop.

MEMBROS DA BANCA:
Interno - 101376004 - MARCO ANTONIO APARECIDO BARELLI
Interno - 258033001 - TANISMARE TATIANA DE ALMEIDA
Externo à Instituição - JULIANA PARISOTTO POLETINE -