Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones
This study aimed to investigate the effects of growth regulators on germination rates and biochemical compound concentrations in Carica papaya L. seeds ('Formosa' group). The seeds were harvested from fruits at maturation stages 3 and 5 (50 and 75% yellow fruit skin, respectively). The effects of 2-chloroethylphosphonic acid (CEPA), KNO3 and gibberellic acid (GA3) on seed germination, germination index speed, soluble sugars, starch, lipids, soluble proteins and total proteins of the papaya seeds were evaluated. The seeds from stage 5 showed a higher rate of germination 30 days after sowing than did the seeds from stage 3. Treatment with CEPA decreased seed germination, apparently due to decreased starch mobilization; the opposite response was observed following KNO3 treatment. GA3, alone or in combination with KNO3, stimulated an increase in lipid mobilization. In general, with the exception of CEPA, all growth regulators tested were effective in overcoming seed dormancy, and KNO3 was the most effective. The seeds from stage 3 fruits treated with KNO3 or KNO3 + GA3 had higher rates of germination at 14 days.
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Editora da Universidade Estadual de Maringá - EDUEM
2014
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oai:scielo:S1807-862120140004000072014-10-07Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormonesZanotti,Rafael FonsêcaDias,Denise Cunha Fernandes dos SantosBarros,Raimundo SantosDaMatta,Fábio MuriloOliveira,Glauter Lima Carica papaya L CEPA ethylene gibberellins KNO3 reserve compounds This study aimed to investigate the effects of growth regulators on germination rates and biochemical compound concentrations in Carica papaya L. seeds ('Formosa' group). The seeds were harvested from fruits at maturation stages 3 and 5 (50 and 75% yellow fruit skin, respectively). The effects of 2-chloroethylphosphonic acid (CEPA), KNO3 and gibberellic acid (GA3) on seed germination, germination index speed, soluble sugars, starch, lipids, soluble proteins and total proteins of the papaya seeds were evaluated. The seeds from stage 5 showed a higher rate of germination 30 days after sowing than did the seeds from stage 3. Treatment with CEPA decreased seed germination, apparently due to decreased starch mobilization; the opposite response was observed following KNO3 treatment. GA3, alone or in combination with KNO3, stimulated an increase in lipid mobilization. In general, with the exception of CEPA, all growth regulators tested were effective in overcoming seed dormancy, and KNO3 was the most effective. The seeds from stage 3 fruits treated with KNO3 or KNO3 + GA3 had higher rates of germination at 14 days.info:eu-repo/semantics/openAccessEditora da Universidade Estadual de Maringá - EDUEMActa Scientiarum. Agronomy v.36 n.4 20142014-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212014000400007en10.4025/actasciagron.v36i4.18057 |
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Zanotti,Rafael Fonsêca Dias,Denise Cunha Fernandes dos Santos Barros,Raimundo Santos DaMatta,Fábio Murilo Oliveira,Glauter Lima |
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Zanotti,Rafael Fonsêca Dias,Denise Cunha Fernandes dos Santos Barros,Raimundo Santos DaMatta,Fábio Murilo Oliveira,Glauter Lima Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
author_facet |
Zanotti,Rafael Fonsêca Dias,Denise Cunha Fernandes dos Santos Barros,Raimundo Santos DaMatta,Fábio Murilo Oliveira,Glauter Lima |
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Zanotti,Rafael Fonsêca |
title |
Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
title_short |
Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
title_full |
Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
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Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
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Germination and biochemical changes in 'Formosa' papaya seeds treated with plant hormones |
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germination and biochemical changes in 'formosa' papaya seeds treated with plant hormones |
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This study aimed to investigate the effects of growth regulators on germination rates and biochemical compound concentrations in Carica papaya L. seeds ('Formosa' group). The seeds were harvested from fruits at maturation stages 3 and 5 (50 and 75% yellow fruit skin, respectively). The effects of 2-chloroethylphosphonic acid (CEPA), KNO3 and gibberellic acid (GA3) on seed germination, germination index speed, soluble sugars, starch, lipids, soluble proteins and total proteins of the papaya seeds were evaluated. The seeds from stage 5 showed a higher rate of germination 30 days after sowing than did the seeds from stage 3. Treatment with CEPA decreased seed germination, apparently due to decreased starch mobilization; the opposite response was observed following KNO3 treatment. GA3, alone or in combination with KNO3, stimulated an increase in lipid mobilization. In general, with the exception of CEPA, all growth regulators tested were effective in overcoming seed dormancy, and KNO3 was the most effective. The seeds from stage 3 fruits treated with KNO3 or KNO3 + GA3 had higher rates of germination at 14 days. |
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Editora da Universidade Estadual de Maringá - EDUEM |
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2014 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1807-86212014000400007 |
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