The Effect of Priming Treatments on the Viability and Accumulation of Chromosomal Damage in Aged Pea Seeds

Sivritepe, H. Özkan; Dourado, A. M.

doi:10.1006/anbo.1995.1008

Cited by 48 publications

(22 citation statements)

References 14 publications

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“…It has been proposed that seed germination in salt-affected soils is influenced by the total concentration of dissolved salt (or the osmotic pressure) by creating water potentials that prevent water uptake or by toxic effects of specific ions involved (Sosa et al 2005). The impact of NaCl on Quinoa seeds can be compared with seed priming or osmoconditioning in NaCl solutions, one of the physiological methods, which increase salt tolerance and improve seed performance and provide faster and synchronized germination (Levitt 1980;Sivritepe and Dourado 1995). In accordance with our results seed priming stimulates many of the metabolic processes involved with the early phases of germination, and it has been noted that they grow more vigorously and perform better at adverse conditions (Desai et al 1997).…”

Section: Discussionmentioning

confidence: 99%

Effect of salinity on composition, viability and germination of seeds of Chenopodium quinoa Willd

2007

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Salinity influences plant growth, seed yield and seed quality even of halophytic crops such as Chenopodium quinoa. Plant growth, total seed yield, number of seeds, fresh weight and dry weight of seeds, were all significantly reduced in the presence of salinity. Only at high salinity did the content of proteins (as well as total N) increase significantly in the seeds whereas the content of total carbohydrates (as well as total C) decrease. Aside from that the capacity for germination was diminished by a reduced seed size and a disproportionate reduction of the volume of the perisperm. However, the reduced capacity seemed to be compensated by an accelerated germination owing to high Na and Cl concentrations leading to a low water potential in the walls of the plant ovary. At high salinity the passage of NaCl to the seed interior was hindered by the seed cover. There was an obvious gradient between potentially toxic (Na and Cl) and essentially needed elements (K, Mg, Ca, P and S) across the seed coat of salt treated plants and also a significant change of the distribution of elements in the embryo. The results indicate a highly protected seed interior leading to a high salinity resistance of quinoa seeds.

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Section: Discussionmentioning

confidence: 99%

Effect of salinity on composition, viability and germination of seeds of Chenopodium quinoa Willd

2007

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“…It has also been reported that priming can repair seed-deterioration damage to some extent (Sivritepe and Dourado 1995). Roohi and Jameson (1991) reported that seed priming of range-grass (Bouteloua gracilis) by indol acetic acid increased seedling establishment under drought stress by decreasing the time between germination and formation of adventitious roots.…”

Section: Introductionmentioning

confidence: 97%

How Hormonal Priming of Aged and Nonaged Seeds of Bromegrass Affects Seedling Physiological Characters

Eisvand

Alizadeh

Fekri

2010

Journal of New Seeds

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Effects of hormonal priming by cytokinin (CK), auxin, and gibberellin (GA) at 0, 25, 50, and 100 ppm of aged and nonaged seeds of bromegrass (Bromus inermis) on some physiological properties of seedlings were evaluated in a pot experiment. The seeds were subjected to accelerated aging to produce aged seeds. Percentage and rate of seedling emergence, seedling vigor, seedling-growth rate (SGR), seedling dry weight, chlorophyll and activity of catalase and peroxidase of seedling decreased following accelerated aging. Auxin priming improved emergence, vigor, SGR, root length, shoot, and seedling height. CK produced largest leaf area, whereas GA-primed seed had the highest concentration of chlorophyll in seedlings. Results suggested that physiological quality of bromegrass seed, especially aged seed, could be improved by hormonal priming. Auxin had the most positive effect on percent emergence, rate of emergence and SGR; CK and GA had positive effects on chlorophyll and leaf area. The three phytohormones in appropriate ratio in the priming solution improved aged seeds of bromegrass physiologically.

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“…Priming has been shown to be both beneficial (Georghiou et al, 1987;Probert et al, 1991;Wechsberg, 1994) and detrimental Tarquis and Bradford, 1992) to subsequent longevity. Increases in the rate of germination through priming have been attributed to the advancement of germination metabolism (Lanteri et al, 1993;Sarocco et al, 1995;Soeda et al, 2005), enhanced antioxidant activity (Bailly et al, 2000) and, particularly where longevity is improved, repair processes (Burgass and Powell, 1984;Ashraf and Bray, 1993;Bray et al, 1993;Sivritepe and Dourado, 1995). Negative effects of priming have been explained as the consequence of germination sensu strictu having advanced to a state where seeds have lost desiccation tolerance (Ś liwińska and Jendrzejczak, 2002) or are less able to resist damage during air-dry storage (Powell et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Priming and re-drying improve the survival of mature seeds of Digitalis purpurea during storage

et al. 2009

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† Background and Aims Most priming studies have been conducted on commercial seed lots of unspecified uniformity and maturity, and subsequent seed longevity has been reported to both increase and decrease. Here a seed lot of Digitalis purpurea L. with relatively uniform maturity and known history was used to analyse the effects of priming on seed longevity in air-dry storage. † Methods Seeds collected close to natural dispersal and dried at 15 % relative humidity (RH), 15 8C, were placed into experimental storage (60 % RH, 45 8C) for 14 or 28 d, primed for 48 h at 0, 21, 22, 25, 210 or 215 MPa, re-equilibrated (47 % RH, 20 8C) and then returned to storage. Further seed samples were primed for 2 or 48 h at 21 MPa and either dried at 15 % RH, 15 8C or immediately re-equilibrated for experimental storage. Finally, some seeds were given up to three cycles of experimental storage and priming (48 h at 21 MPa). † Key Results Priming at 21 MPa had a variable effect on subsequent survival during experimental storage. The shortest lived seeds in the control population showed slightly increased life spans; the longer lived seeds showed reduced life spans. In contrast, seeds first stored for 14 or 28 d before priming had substantially increased life spans. The increase tended to be greatest in the shortest lived fraction of the seed population. Both the period of rehydration and the subsequent drying conditions had significant effects on longevity. Interrupting air-dry storage with additional cycles of priming also increased longevity. † Conclusions The extent of prior deterioration and the post-priming desiccation environment affect the benefits of priming to the subsequent survival of mature seeds. Rehydration-dehydration treatments may have potential as an adjunct or alternative to the regeneration of seed accessions maintained in gene banks for plant biodiversity conservation or plant breeding.

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The Effect of Priming Treatments on the Viability and Accumulation of Chromosomal Damage in Aged Pea Seeds

Cited by 48 publications

References 14 publications

Effect of salinity on composition, viability and germination of seeds of Chenopodium quinoa Willd

Effect of salinity on composition, viability and germination of seeds of Chenopodium quinoa Willd

How Hormonal Priming of Aged and Nonaged Seeds of Bromegrass Affects Seedling Physiological Characters

Priming and re-drying improve the survival of mature seeds of Digitalis purpurea during storage

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