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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Fenologia e caracteriza??o dos frutos de esp?cies de Physalis cultivadas no semi?rido baiano

Tanan, Tamara Torres 26 February 2015 (has links)
Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2015-08-04T00:46:23Z No. of bitstreams: 1 Disserta??o_Tamara_Tana.pdf: 823783 bytes, checksum: b47d6203bd51aea839cf2df6a5296331 (MD5) / Made available in DSpace on 2015-08-04T00:46:23Z (GMT). No. of bitstreams: 1 Disserta??o_Tamara_Tana.pdf: 823783 bytes, checksum: b47d6203bd51aea839cf2df6a5296331 (MD5) Previous issue date: 2015-02-26 / Physalis genus belongs to the Solanaceae family, and shows species with great economic potential due to the production of secondary metabolites and their fruits rich in vitamins and other nutrients. This study aimed to characterize the phenology, productivity and evaluate physical and biochemical parameters of Physalis angulata, Physalis ixocarpa, Physalis philadelphica and Physalis pubescens fruits along the maturation period. Were determined days after sowing (DAS) for the occurrence of each stage and assessed length and stem diameter in three sowing dates. To biometric characterize the fruits were evaluated weight, longitudinal and transverse diameter, and biochemical characterization were quantified the protein content, reducing sugars, sucrose and total soluble sugars fruits in three maturation levels determined by the fruit calyx color, which were taken for determination of the content of chloroplastid pigments with DMSO. Physalis plants are susceptible to high temperatures and low rainfall, P. angulata is the most tolerant soil and climatic conditions in the region. Cultivation started in April provides a better plant growth, with productivity similar to regions where the crop has already been established. The ripe fruits had higher fruit and more sugar content, and must be harvested in the third stage of maturity: straw color to P. angulata, when cup rupture to P. ixocarpa, and yellow for P. philadelphica and P. pubescens. / O g?nero Physalis pertence ? fam?lia Solanaceae, e apresenta esp?cies com grande potencial econ?mico devido ? produ??o de metab?litos secund?rios e seus frutos ricos em vitaminas e demais nutrientes. Este trabalho teve como objetivo caracterizar a fenologia e avaliar par?metros f?sicos e bioqu?micos dos frutos ao longo do per?odo de matura??o de esp?cies de Physalis. O experimento foi realizado na Unidade Horto Florestal, localizada em Feira de Santana/BA. As mudas foram semeadas em estufa e transplantadas ao campo experimental quando apresentavam aproximadamente 20cm. Foram determinados os dias ap?s a semeadura (DAS) para ocorr?ncia de cada fenofase e avaliados semanalmente o comprimento e o di?metro do ramo principal em fun??o de tr?s ?pocas de semeadura das esp?cies Physalis angulata, Physalis ixocarpa e Physalis philadelphica. Para a caracteriza??o biom?trica dos frutos de P. angulata, P. ixocarpa, P. philadelphica e P. pubescens, foram avaliados a massa, di?metro longitudinal e transversal m?dio, e para caracteriza??o bioqu?mica foram quantificados colorimetricamente os teores de prote?nas sol?veis, a??cares redutores, sacarose e a??cares sol?veis totais em tr?s n?veis de matura??o, determinados pela colora??o do c?lice que envolve o fruto, os quais foram retirados para determina??o do teor dos pigmentos cloroplast?dicos utilizando DMSO. As plantas das esp?cies de Physalis s?o suscet?veis a temperaturas acima de 30? e escassez de chuvas, sendo a P. angulata a mais tolerante as condi??es edafoclim?ticas da regi?o. O cultivo iniciado no m?s de abril proporciona um melhor desenvolvimento das plantas, com produtividade semelhante a regi?es onde o cultivo j? foi estabelecido, sendo a melhor ?poca de cultivo na regi?o de Feira de Santana. As esp?cies apresentaram frutos maiores e com maior teor de a??cares quando maduros, devendo ent?o ser colhidos no terceiro est?dio de matura??o, cor de palha para P. angulata, quando ocorre o rompimento do c?lice para P. ixocarpa, e amarelo para P. philadelphica e P. pubescens.

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