Qualidade fisiológica e sanitária de sementes de celosias armazenadas por diferentes períodos

Janine Farias Menegaes,Rogério Antônio Bellé,Ubirajara Russi Nunes,Geovana Facco Barbieri

doi:10.14295/oh.v25i1.1228

Janine Farias Menegaes, Rogério Antônio Bellé + Show 2 more

Open Access

https://doi.org/10.14295/oh.v25i1.1228

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Abstract

The objective was to evaluate the physiological and sanitary quality of cockscomb seeds stored for different periods. The experiment was conducted in a completely randomized design, with a 2x5 factorial scheme (two species of cockscomb: Celosia argentea L. and Celosia cristata L., and five seed lots with different storage periods: 0, 4, 8, 12 and 16 years, from the date of harvest) with four replicates. After harvesting each batch of seeds, in their respective years, they were stored with an average moisture content of 11% and average germination of 98% in cold chamber in packages of Kraft paper (15 ºC and 40% RH). It was observed that the average vigor (first count of germination) of the seeds of the two species of cockscomb was 88%, and the average germination of normal seedlings was 89 and 96% for the C. argentea and C. cristata species, respectively, with mean germination of 2.9 days for all storage periods. The relative frequency demonstrated homogeneity in the germination of the two species of cockscomb maintaining germinative viability in all periods of storage. It is concluded that the physiological potential and sanitary quality of the seeds of the C. argentea and C. cristata were preserved for periods ranging from zero to sixteen years of storage.

Highlights

The seed storage aims to ensure the completeness and the viability of the plant structures for extended periods, preserving their genetic, physiological, sanitary and physical qualities (Carvalho and Nakagawa, 2012)
In Brazil, the main cut flowers produced from seeds are: Anthirrhinum majus Linn, Dianthus chinensis x barbatus, Celosia argenta L. and C. cristata L., Helianthus annus L., Eustoma grandiflorum (Raf,) Shinners, Callistephus chinensis Nees L., among others (Paiva and Almeida, 2014)
The qualities of seeds of the two species were evaluated by the following tests: weight of one thousand seeds determined by the methodology described by the manual of Rules for Seeds Analysis (Brasil, 2009a); degree of humidity determined by the method of greenhouse 105±3 oC (24 h), adapted by Brasil (2009a); germination pattern degree four replications of 100 seeds were sowed, in boxes of crystal polystyrene, moistened with distilled water in the proportion of 2.5 times the mass of

Summary

Introduction

The seed storage aims to ensure the completeness and the viability of the plant structures for extended periods, preserving their genetic, physiological, sanitary and physical qualities (Carvalho and Nakagawa, 2012). In Brazil, the main cut flowers produced from seeds are: Anthirrhinum majus Linn, Dianthus chinensis x barbatus, Celosia argenta L. and C. cristata L., Helianthus annus L., Eustoma grandiflorum (Raf,) Shinners, Callistephus chinensis Nees L., among others (Paiva and Almeida, 2014). Facing this diversity, the success of flower propagated by seeds needs high physiological and sanitary quality, as vigor, viability and potential of storage of the used seeds (Khan et al, 2003), contributing positively, for the formation of the plants stand and, for the production of the floral stem of quality

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