Effects of a low-temperature pre-sowing treatment on the germination of tomato seed under temperature and osmotic stress

Coolbear, P.; McGill, C. R.

doi:10.1016/0304-4238(90)90015-7

Cited by 16 publications

(12 citation statements)

References 20 publications

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“…Though seed germination was generally more sensitive to water (Akers et al, 1987). The same results were reported in primed seeds of tomato (Liptay and Tan, 1985) and Impatiens (Frett and Pill, 1989), and in tomato seeds imbibed at a low temperature (Coolbear and McGill, 1990).…”

Section: Discussionsupporting

confidence: 81%

“…germination time under water stress were reported for primed Impatiens seeds (Frett and Pill, 1989) and tomato seeds imbibed at a low temperature (Coolbear and McGill, 1990). Results in our study on carrot seeds indicate that germination time was generally more sensitive to water stress than germinability was, and that sensitivity to water stress of germination time was distinctly lower in primed seeds and was relatively higher in imbibed seeds than it was in untreated seeds.…”

Section: Pronounced Effects Of Presowing Treatment Onsupporting

confidence: 43%

“…Pronouced effect of presowing treatments on seed germination or seedling emergence under water stress conditions were observed in primed seeds of tomato (Liptay and Tan, 1985), parsley (Akers et al, 1987). Impatiens (Frett and Pill, 1989) and Brassica (Rao et al, 1987), and in tomato seeds presowing-treated at a low temperature (Coolbear and McGill, 1990). Effect of seed hardening on days from sowing to 50% seedling emergence in carrot was greater under drier condition (Austin et al, 1969).…”

Section: Introductionmentioning

confidence: 93%

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Germination and Radicle Growth Characteristics of Presowing-treated Carrot Seeds Affected by Different Moisture Levels.

Suzuki

Inou

Yamagishi

1993

Engei Gakkai zasshi

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Germination of imbibed and primed carrot seeds, and seedling radicle growth of imbibed, primed, pregerminated, and primed + pregerminated seeds were compared with those of untreated seeds under different osmotic potentials. Percentage germination decreased significantly at-1.0 MPa in untreated seeds and tended to decrease in imbibed seeds. However, percentage germination of primed seeds did not decrease at-1.0 MPa. It was suggested that sensitivity to water stress of germinability could be lowered as pregermination stage was advanced. Mean germination time for untreated and imbibed seeds increased as osmotic potentials were lowered. Relative increase in mean germination time caused by lowering osmotic potentials was greater for imbibed seeds than it was for untreated seeds. However, mean germination time of primed seeds did not increase at osmotic potentials up to-0.4 or-0.6 MPa. A difference in response to water stress of germination time between primed and imbibed seeds may be caused by cellular opposite osmotic adjustment during these presowing treatments. Coefficients of variation in germination time had no consistent trend against osmotic potentials. Elongation rates of seedling radicles decreased at osmotic potentials below-0.4 MPa for untreated and imbibed seeds, and below-0.2 MPa for primed, pregerminated, and primed +pregerminated seeds.

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Section: Discussionsupporting

confidence: 81%

Section: Pronounced Effects Of Presowing Treatment Onsupporting

confidence: 43%

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

Germination and Radicle Growth Characteristics of Presowing-treated Carrot Seeds Affected by Different Moisture Levels.

Suzuki

Inou

Yamagishi

1993

Engei Gakkai zasshi

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“…The promotive effects of low-temperature storage may be attributed to slowed seed deterioration and elevated seed moisture. Cold, moist storage of seeds following osmotic priming was similar to a low-temperature pre-sowing treatment used by Coolbear and McGill (1990), in which tomato seeds were soaked in distilled water at 10C for 21 days and then dried back to their original moisture contents. Seeds of this treatment had lower G 50 at 10, 20, or 30C and higher FPG at 30C than untreated seeds.…”

Section: Resultsmentioning

confidence: 99%

Germination of Osmotically Primed Asparagus and Tomato Seeds after Storage up to Three Months

Owen¹,

Pill²

1994

jashs

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The influence of two drying regimes and two storage temperatures of primed asparagus (Asparagus officinalis L.) and tomato (Lycopersicon esculentum Mill.) seeds on germination after storage up to 3 months was examined. Seeds of 'Mary Washington' asparagus and 'Ace 55' tomato primed in synthetic seawater (-1.0 MPa, 20C, 1 week, dark) were surface-dried at 20C and 50% relative humidity (RH) for 2 h (42% to 49% moisture) or dried-back at 20C and 32.5% RH for 48 h (moisture = 13% tomato and 22% asparagus). These and nonprimed seeds were stored in tight-lidded metal cans and heat-sealed plastic pouches at 4 or 20C for up to 3 months before germination at 20C. After 3-month storage, primed surface-dried asparagus seeds stored at 4C had greater germination percentage and rate than nonprimed seeds, surface-dried seeds stored at 20C, or primed dried-back seeds. Dried-back primed tomato seeds had higher germination percentage than surface-dried primed seeds after 2 or 3 months of storage, with storage temperature having no effect on germination perecentage or rate. In a further study, primed surface-dried and primed dried-back seeds stored at 4 or 20C for 1.5 months in sealed containers were germinated at 15, 25, or 35C under low (-0.05 MPa) or high osmotic stress (-0.4 MPa). Primed surface-dried asparagus seeds stored at 4C, compared to nonprimed seeds, surface-dried seed stored at 20C, or primed dried-back seeds, had greater germination percentage at 15 and 35C and low osmotic stress, and higher germination rate at 15 or 25C. Primed tomato seeds had greater germination percentage than nonprimed seeds only at 35C and low osmotic stress, and higher germination rate at 15 or 25C. Storage of primed tomato seeds at 4C rather than 20C increased germination rate at 15 or 25C, and increased germination percentage at 35C and low osmotic stress. For maximal seed viability and germination rate after 1.5 to 3 months of storage, primed asparagus and tomato seeds should be stored at 4C rather than 20C; however, asparagus seeds should be surface-dried, and tomato seeds should be dried-back.

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“…Hydro‐priming refers to the hydration of seeds in pure water, typically in aerated conditions (Fig. ) and at temperatures considered favorable for germination (Ward & Powell ; Coolbear & McGill ; Gray et al ; Harris et al ). Because the extent of priming is controlled by treatment duration, hydro‐priming is the least precise of the priming techniques and is applied in combination with other treatments (e.g.…”

Section: Introductionmentioning

confidence: 99%

Seed enhancement: getting seeds restoration‐ready

Pedrini

Balestrazzi

Madsen

et al. 2020

Restoration Ecology

100

106

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Seed enhancement technologies such as seed priming and seed coating, developed by the agricultural seed industry, are standard procedures for the majority of crop and horticultural seeds. However, such technologies are only just being evaluated for native plant seeds despite the potential benefits of such treatments for improving restoration effectiveness. Key approaches applicable to native seed include: (1) seed priming, where seeds are hydrated under controlled conditions, and (2) seed coating, in which external materials and compounds are applied onto seeds through a diversity of treatments. These technologies are commonly employed to accelerate and synchronize germination and to improve seed vigor, seedling emergence, establishment, and to facilitate mechanized seed delivery to site, through standardizing seed size and shape. Seed enhancement technologies have now been tested on native seeds to overcome logistical and ecological barriers in restoration. However, further research is needed to extend the application of seed enhancements to a broader array of species, ecosystems, and regions as well as to evaluate new and innovative approaches such as the incorporation of beneficial soil microorganisms and plant growth regulators in the coatings. As techniques in native seed enhancement develop, these approaches need to be capable of being scaled‐up to provide the tonnages of seed required for global restoration.

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Effects of a low-temperature pre-sowing treatment on the germination of tomato seed under temperature and osmotic stress

Cited by 16 publications

References 20 publications

Germination and Radicle Growth Characteristics of Presowing-treated Carrot Seeds Affected by Different Moisture Levels.

Germination and Radicle Growth Characteristics of Presowing-treated Carrot Seeds Affected by Different Moisture Levels.

Germination of Osmotically Primed Asparagus and Tomato Seeds after Storage up to Three Months

Seed enhancement: getting seeds restoration‐ready

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