期刊
SCIENTIA HORTICULTURAE
卷 123, 期 3, 页码 301-307出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scienta.2009.10.006
关键词
Sweet corn; Polyamines; Seed development; Physiological change; Seed quality
类别
资金
- Major Science and Technology Special Project (priority subject) of Zhejiang Province [2008C12005-1]
- Major Special Project of Ministry of Agriculture [2008ZX08005-005]
- Yunnan Province Tobacco Company [07A02]
Polyamines putatively affect tolerance to abiotic stresses and are believed to be important in organogenesis. Present experiments investigate the relationship between polyamines (PAs) and seed quality. Therefore, during seed development, the changes in free putrescine (Put), spermidine (Spd) and spermine (Spm) and physiological and biochemical parameters in F-1 seeds of sh(2) sweet corn were compared. Concentrations of Put, Spd and Spm increased from 14 to 30 days after pollination (DAP). After 30 DAP Put concentration declined with an opposite trend to that of Spd and Spm. The regression analysis between PAs and seed quality described by physiological and biochemical parameters including germination percentage, germination energy, germination index, seed size, seed fresh and dry weight, total soluble sugar, total soluble protein, Maiondialdehyde (MDA) concentration, electrolyte leakage, peroxidase (POD) and catalase (CAT) activity were conducted. Spd was observed to have a closer relation with the comprehensive physiological changes of seeds during their development than that of Put and Spm. Moreover, the Spm concentration might be more suitable to forecast seed germinability during seed maturation period than Spd and Put. It indicated that endogenous Spd and Spm in dissociated form had more effect than Put during seed development progress of sweet corn. (C) 2009 Elsevier B.V. All rights reserved.
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