• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
10.11606/T.11.2004.tde-27102004-155457
Document
Author
Full name
Samara Camargo Lopes Fonseca
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, 2004
Supervisor
Committee
Silva, Walter Rodrigues da (President)
Cicero, Silvio Moure
Martins, Leila
Nakagawa, João
Novembre, Ana Dionisia da Luz Coelho
Title in Portuguese
Conservação de sementes de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.): interferências do teor de água das sementes e da temperatura do ambiente.
Keywords in Portuguese
armazenamento agrícola
fitotecnia
maracujá-amarelo
sementes
teor de água
Abstract in Portuguese
As sementes de maracujá-amarelo perdem rapidamente o poder germinativo quando são arbitrariamente armazenadas; assim, buscando embasamento para a definição de alternativas tecnológicas voltadas à desaceleração da deterioração durante o armazenamento, o objetivo da pesquisa foi o de estudar, através de variações no teor de água das sementes e na temperatura do ambiente, o comportamento fisiológico de sementes de maracujazeiro. A experimentação, realizada entre julho de 2002 e agosto de 2003 no Laboratório de Análise de Sementes localizado na Escola Superior de Agricultura Luiz de Queiroz/ USP, foi conduzida com sementes de maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.) produzidas em Mogi Mirim/ SP a partir de polinização aleatória entre plantas da Série IAC 270. Após a retirada da mucilagem das sementes, foi determinado o grau de umidade inicial do lote e, paralelamente, obtida a amostra representante do tratamento com o maior teor de água estudado (31%); as sementes remanescentes foram submetidas à secagem, em estufa com circulação de ar a 30°C ± 3°C, para a obtenção dos demais tratamentos referentes aos teores de água desejados (27%, 21%, 17%, 11% e 7%). Posteriormente, os tratamentos, correspondentes aos diferentes graus de umidade, foram armazenados em câmaras com temperaturas controladas de 10°C, 15°C e 20°C. Antes do armazenamento, e após 35, 70, 105, 140, 175, 210, 245, 280, 315 e 350 dias, as sementes foram submetidas às avaliações da qualidade. De acordo com os resultados obtidos, a combinação do grau de umidade de 7% com a temperatura de 10°C supera as demais no favorecimento à manutenção do potencial fisiológico das sementes de Passiflora edulis Sims f. flavicarpa Deg.
Title in English
Conservation of yellow passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) seeds: interference of water content and environment temperature.
Keywords in English
agricultural storage
fitotecnia
seeds
water content
yellow passion fruit
Abstract in English
Yellow passion fruit seeds quickly lose the germination capacity when erratically stored; thus, seeding grounds to define technological alternatives to delay deterioration during storage, the goal of this research was to study the physiological behavior of passion fruit (Passiflora edulis Sims f. flavicarpa Deg.) seeds through varied seed water content and environmental temperature. The experiment was conducted at the Seed Analysis Laboratory of the Escola Superior de Agricultura Luiz de Queiroz - USP, from July 2002 through August 2003, with yellow passion fruit seeds produced in Mogi Mirim/ SP, through random pollination among IAC 270 Series plants. Following seed mucilage removal, the initial moisture degree of the lot was determined and the representative sample of the treatment with the highest water content studied (31%) was obtained concurrently; the remaining seeds were dried in na air-circulating oven at 30°C ± 3°C to achieve other treatments regarding the intended water contents (27%, 21%, 17%, 11% and 7%). Further, the treatments - corresponding to different moisture levels - were stored in controlled-temperature chambers at 10°C, 15°C and 20°C. Previous to storage and 35, 70, 105, 140, 175, 210, 245, 280, 315 and 350 days later, the seeds were submited to quality assays. The results indicate that the combination between 7% moisture degree and 10°C temperature overcomes the remaining ones towards favoring the maintenance of the physiological potential of Passiflora edulis Sims f. flavicarpa Deg. seeds.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
samara.pdf (502.44 Kbytes)
Publishing Date
2004-10-28
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
Centro de Informática de São Carlos
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2020. All rights reserved.