Accessibility navigation

Prediction of cottonseed longevity

Usberti, R., Roberts, E. H. and Ellis, R. H. (2006) Prediction of cottonseed longevity. Pesquisa Agropecuaria Brasileira, 41 (9). pp. 1435-1441. ISSN 0100-204X

Full text not archived in this repository.

It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing.

To link to this item DOI: 10.1590/S0100-204X2006000900013


The objective of this work was to determine the viability equation constants for cottonseed and to detect the occurrence and depletion of hardseededness. Three seedlots of Brazilian cultivars IAC-19 and IAC-20 were tested, using 12 moisture content levels, ranging from 2.2 to 21.7% and three storage temperatures, 40, 50 and 65 degrees C. Seed moisture content level was reached from the initial value (around 8.8%) either by rehydration, in a closed container, or by drying in desiccators containing silica gel, both at 20 degrees C. Twelve seed subsamples for each moisture content/temperature treatment were sealed in laminated aluminium-foil packets and stored in incubators at those temperatures, until complete survival curves were obtained. Seed equilibrium relative humidity was recorded. Hardseededness was detected at moisture content levels below 6% and its releasing was achieved either naturally, during storage period, or artificially through seed coat removal. The viability equation quantified the response of seed longevity to storage environment well with K-E = 9.240, C-W = 5.190, C-H = 0.03965 and C-Q = 0.000426. The lower limit estimated for application of this equation at 65 degrees C was 3.6% moisture content.

Item Type:Article
Divisions:Life Sciences > School of Agriculture, Policy and Development
ID Code:9308
Uncontrolled Keywords:Gossypium hirsutum, seed storage, hardseededness, viability equation, SEED VIABILITY CONSTANTS, MOISTURE-CONTENT LIMIT, STORAGE, EQUATIONS
Publisher:FapUNIFESP (SciELO)

University Staff: Request a correction | Centaur Editors: Update this record

Page navigation