Produ??o de mudas provenientes de sementes de Senegalia polyphylla atacadas por bruquineos

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-08-22T12:50:43Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adriano_geraldo_fonseca.pdf: 3031478 bytes, checksum: fcb7314d05198bd85b9c8b2f71cfb442 (MD5) Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-10-26T13:51:08Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adriano_geraldo_fonseca.pdf: 3031478 bytes, checksum: fcb7314d05198bd85b9c8b2f71cfb442 (MD5) Made available in DSpace on 2018-10-26T13:51:08Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) adriano_geraldo_fonseca.pdf: 3031478 bytes, checksum: fcb7314d05198bd85b9c8b2f71cfb442 (MD5) Previous issue date: 2018 Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) As sementes da fam?lia Fabaceae geralmente possuem alguma dorm?ncia, o que representa um obst?culo na produ??o de mudas. Sementes da maioria das leguminosas brasileiras s?o danificadas por v?rios grupos de insetos, especialmente os broqueadores (Coleoptera, Bruchinae). A determina??o dos n?veis de dano, taxas de preda??o e efeitos na germina??o das sementes causados por bruqu?neos s?o muito importantes, uma vez que podem fornecer estimativas da press?o de preda??o sofrida pelas plantas hospedeiras. O consumo das sementes pode afetar diretamente a quantidade que ser? dispersa no ambiente, bem como a sua viabilidade. Desta forma, os danos provocados por insetos sit?fagos podem influenciar a habilidade de coloniza??o das esp?cies vegetais e a distribui??o espacial, bem como a din?mica de suas popula??es. Este estudo teve como objetivo estudar a germina??o em sementes de Senegalia polyphylla atacadas por bruqu?neos e a produ??o de mudas provenientes das sementes atacadas por esses insetos. Os frutos foram coletados em S?o Gon?alo do Rio Preto e levados a UFVJM para an?lise. As sementes indenes e as danificadas por bruqu?neos foram submetidas aos testes de germina??o em cinco tratamentos, com cem sementes cada. O melhor percentual de germina??o foi obtido nas sementes sadias e lixadas. As m?dias das sementes sadias embebidas em ?gua e das atacadas pelos bruqu?neos germinaram menos que as demais. O ataque de bruqu?neos proporcionou baixa germina??o, no entanto n?o impediu que esse processo ocorresse em parte das sementes. Em sequ?ncia foi feito outro trabalho que teve como objetivo avaliar a produ??o de mudas provenientes de sementes sadias e atacadas por bruqu?neos, ambas inoculadas com fungo. Ap?s a germina??o, as pl?ntulas foram transferidas para tubetes e levadas para casa de sombra. As medi??es morfofisiol?gicas foram realizadas ao final de 120 dias. As mudas originadas de sementes atacadas apresentaram caracter?sticas semelhantes as originadas de sementes sadias. Houve baixa mortalidade das mudas originadas de sementes atacadas, demonstrando ser vi?vel sua utiliza??o na produ??o de mudas de S. polyphylla. Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Ci?ncia Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2018. The seeds of the Fabaceae family usually have some dormancy, which represents an obstacle in the production of seedlings. Seeds of most Brazilian legumes are damaged by various insect groups, especially the bruchid (Coleoptera, Bruchinae). The determination of damage levels, rates of predation and effects on seed germination caused by bruchid are very important, since they can provide estimates of the predation pressure suffered by host plants. The consumption of the seeds can directly affect the amount that will be dispersed in the environment, as well as its viability. In this way, the damage caused by sitophagous insects can influence the colonization ability of the plant species and the spatial distribution, as well as the dynamics of their populations. This study aimed to study the germination of Senegalia polyphylla seeds attacked by bruchid and the production of seedlings from the seeds attacked by these insects. The fruits were collected in S?o Gon?alo do Rio Preto and taken to UFVJM for analysis. The indene and bruchid - damaged seeds were submitted to germination tests in five treatments, with one hundred seeds each. The best percentage of germination was obtained in healthy and sanded seeds. The mean values of healthy seeds imbibed in water and those of witches attacked germinated less than the others. Bruchid attack provided low germination, however did not prevent this process from occurring in part of the seeds. In sequence, another work was carried out to evaluate the production of seedlings from healthy seeds and attacked by bruchid, both inoculated with fungus. After germination, the seedlings were transferred to tubes and taken to the shade house. Morphophysiological measurements were performed at the end of 120 days. The seedlings originated from attacked seeds had similar characteristics as those from healthy seeds. There was a low mortality of the seedlings originated from the attacked seeds, demonstrating their viability in the production of S. polyphylla seedlings.