Banca de DEFESA: CATIANE DOS SANTOS BRAGA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : CATIANE DOS SANTOS BRAGA
DATA : 21/02/2020
HORA: 13:30
LOCAL: Campus Universitário de Alta Floresta
TÍTULO:

Morphoagronomic, phenological characterization and pollen viability of bean varieties

PALAVRAS-CHAVES:

Bean, Genetic resources, Variability.

PÁGINAS: 108
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Melhoramento Vegetal
RESUMO:

The characterization and evaluation of genetic resources are essential for the development of new cultivars by breeding programs. Among the activities carried out, it highlight the morphoagronomic and reproductive biology studies. Therefore, this study aimed to carry out a morphoagronomic, phenological characterization and estimate the pollen viability of thirteen bean varieties under the conditions of the city of Alta Floresta-MT. The experiment was conducted at the DIC consisting of thirteen treatments (PV01, VU02, VU03, VU04, VU05, PV06, VU07, PV08, PV09, VU10, VU11, VU12, PL13) and ten repetitions. The morpho-agronomic characterization was performed using descriptors of plants, leaves, flowers, fruits and seeds. The data obtained were evaluated using descriptive, uni and multivariate statistics. Only violet and white flowers were observed. Most varieties had small seeds with different colors. The analysis of variance showed significant differences at 1% probability for all quantitative characteristics evaluated. The number of days for flowering and physiological maturation were the characteristics that presented more groups formed by the Scott & Knott average cluster test. The UPGMA and Tocher clustering methods agreed to separate the varieties into three groups and according to species. The canonical variables revealed that the first two characteristics explained 100% of the total variation and separated the varieties into five groups. The characteristics that most contributed to the genetic divergence were: number of days for flowering and physiological maturation. In the evaluation of the phenological phases, a scale of notes established for common beans was used and applied to all varieties. The flowering rate, peak flowering and pollen viability were estimated using the Alexander dye. The vegetative and reproductive development of the thirteen bean varieties ranged from 22 to 36 days and 36 to 59 days respectively. Varieties with a longer reproductive period took longer to complete the development cycle. The genotypes PV06 and PV08 both of determined growth and belong to species P. vulgaris are the earliest, while the VU05 variety of undetermined growth took longer to complete the cycle. The highest peak and flowering rate was obtained by the PL13 genotype, and all varieties had a high percentage of viable pollens. It is concluded that the thirteen bean varieties have genetic variability and potential genetic resources to be conserved and used in breeding programs. In addition, it is essential that studies be expanded to increase knowledge of the existing local variability.

MEMBROS DA BANCA:
Presidente - 253925001 - SERGIO ALESSANDRO MACHADO SOUZA
Interno - 129897002 - ISANE VERA KARSBURG
Externo à Instituição - AISY BOTEGA BALDONI TARDIN - EMBRAPA
Externo à Instituição - KELLEN COUTINHO MARTINS - UNEMAT