Resist?ncia de gen?tipos de Ipomoea batatas (L.) (Solanales: Convolvulaceae) ao ataque de Bedellia somnulentella (Zeller, 1847) (Lepidoptera: Bedelliidae)

Autor: Cabral, Maria J?ssica dos Santos
Přispěvatelé: Soares, Marcus Alvarenga, Santos, Concei??o Aparecida dos, Costa, Elizangela Souza Pereira, Ferreira, Evander Alves, Silva, Isabel Moreira da, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
Jazyk: portugalština
Rok vydání: 2021
Předmět:
Zdroj: Repositório Institucional da UFVJM
Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM)
instacron:UFVJM
Popis: Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2021-09-22T19:28:36Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) maria_jessica_santos_cabral.pdf: 1058041 bytes, checksum: 88092b7ce1a6f27261007880edfef085 (MD5) Approved for entry into archive by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2021-09-22T19:32:32Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) maria_jessica_santos_cabral.pdf: 1058041 bytes, checksum: 88092b7ce1a6f27261007880edfef085 (MD5) Made available in DSpace on 2021-09-22T19:32:32Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) maria_jessica_santos_cabral.pdf: 1058041 bytes, checksum: 88092b7ce1a6f27261007880edfef085 (MD5) Previous issue date: 2021 Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) A batata doce, Ipomoea batatas (Solanales: Convolvulaceae), ? um alimento de grande import?ncia no mundo. Por?m a expans?o de ?reas de produ??o de I. batatas pode resultar no aumento populacional de pragas e causar danos e perdas econ?micas. O objetivo do trabalho foi identificar a prefer?ncia de oviposi??o, mensurar intensidade de ataque e caracterizar morfo e fisiologicamente os gen?tipos de I. batatas resistentes e suscet?veis a Bedellia somnulentella (Lepidoptera: Bedelliidae). Onze gen?tipos de I. batatas foram utilizados para os experimentos. Caracteres morfol?gicos que podem estar envolvidos no processo de resist?ncia a B. somnulentella como, o n?mero de tricomas foliares, ?rea foliar consumida e morfologia das folhas foram analisados nos onze gen?tipos de I. batatas. Os gen?tipos de I. batatas, apresentaram diferentes graus de resist?ncia a B. somnulentella, o gen?tipo UFMG 3, foi altamente suscet?vel, UFVJM 18, 526 e Brazl?ndia branca suscet?veis e os demais pouco suscet?veis a B. somnulentella para oviposi??o. A ?rea foliar consumida dos gen?tipos UFVJM 1, 4, 18 e Rubssol foram as maiores, seguidos daquelas de UFVJM 2, 3, 291, 526 e Brazl?ndia branca. A resist?ncia ou suscetibilidade a B. somnulentella n?o apresentou rela??o com a densidade de tricomas foliares. Folhas hastadas, sagitadas e deltoides obtiveram maior prefer?ncia por B. somnulentella. Gen?tipos de I. batatas atacados por B. somnulentella apresentaram altera??es na fluoresc?ncia inicial da clorofila a (F0), houve um aumento da (Fm) e uma correla??o negativa entre Fm/F0, mostrando estresse fotossint?tico nas plantas. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2021. The sweet potato, Ipomoea batatas (Solanales: Convolvulaceae), is a food of great importance in the world. However, the expansion of I. batatas production areas can result in an increase in the population of pests and cause damage and economic losses. The objective of the work was to identify the preference for oviposition, measure the intensity of attack and characterize morphologically and physiologically the genotypes of I. batatas resistant and susceptible to Bedellia somnulentella (Lepidoptera: Bedelliidae). Eleven genotypes of I. batatas were used for the experiments. Morphological characters that may be involved in the resistance process to B. somnulentella, such as the number of leafs trichomes, leaf area consumed and leaf morphology were analyzed in the eleven I. batatas genotypes. The I. batatas genotypes showed different degrees of resistance to B. somnulentella, the UFMG 3 genotype was highly susceptible, UFVJM 18, 526 and Brazl?ndia Branca susceptible and the others were less susceptible to B. somnulentella for oviposition. The leaf area consumed from the UFVJM 1, 4, 18 and Rubssol genotypes were the largest, followed by those from UFVJM 2, 3, 291, 526 and Brazl?ndia Branca. The resistance or susceptibility to B. somnulentella was not related to the density of leaf trichomes. Raised, sagittal and deltoid leaves obtained high preference for B. somnulentella. Genotypes of I. batatas attacked by B. somnulentella showed changes in the initial fluorescence of chlorophyll a (F0), there was an increase in (Fm) and a negative correlation between Fm/F0, showing photosynthetic stress in plants.
Databáze: OpenAIRE
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