Recent Developments in Seed Technology

Hill, H. J.

doi:10.1300/j153v01n01_09

Cited by 30 publications

(30 citation statements)

References 14 publications

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“…Film coating is often used on seed species that do not require pelleting (Brassica spp.) for precision planting but the seed requires some encapsulation due to plant protectant application (Hill, 1999).This technology permits the application of multiple coatings and the increase in seed weight ranges from 1-10%. Recovery rates have been reported as great as 90% and seed to seed variability is low Harman, 1990 andMcQuilken et al, 1990).…”

Section: Immersion Techniques In Futurementioning

confidence: 99%

Seed treatments for sustainable agriculture-A review

Sharma

Singh²,

Sharma³

et al. 2015

JANS

170

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Abstract:Seed treatment refers to the application of certain agents physical, chemical or biological to the seed prior to sowing in order to suppress, control or repel pathogens, insects and other pests that attack seeds, seedlings or plants and it ranges from a basic dressing to coating and pelleting. Introduction and ban of arsenic (used from 1740 until 1808) is the key milestones in the history of modern seed treatment till then a continuous research and advancement in this technology is going on. The technological advancement prepared a roadmap for refining existing seed treatment technologies and future work on technologies like fluid drilling as a way to sow germinated seeds where gel can also serve as a delivery system for other materials, seed priming advances the early phase of germination without redicle emergence. Another advanced technology, solid matrix priming (SMP) has been evaluated as a means to advances the germination of seeds and serve as a carrier for useful material too. Physical and biological seed treatments alone an alternative to chemicals or in combination with a chemical treatment are being used worldwide because of their environmental safety and socioeconomic aspects. Biological seed treatments are expected to be one of the fastest growing seed treatment sectors in the near future, in part because they are easier to register at Environment Protection Agency (EPA). Lack of awareness to seed treatments at farmer's level is one of the limiting factors in disease management and hence, efforts should be made at farmer's level to adopt the technology. Keeping the all above facts in mind, selected seed treatment technologies with their improvement and significance will be discussed in this review.

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Section: Immersion Techniques In Futurementioning

confidence: 99%

Seed treatments for sustainable agriculture-A review

Sharma

Singh²,

Sharma³

et al. 2015

JANS

170

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“…Similar to the common practices of planting "primed seed" with a mechanical seeder, seeds were dried overnight at ambient conditions on blotter paper. Primed seeds can be dried and stored, as long as the radicle has not emerged, and then planted at a later date (Hill 1999). The following morning we placed all treated and control seeds in Petri plates on moist blotter paper to imbibe water and germinate.…”

Section: A T E R I a L S A N D M E T H O D Smentioning

confidence: 99%

Evaluation of thermal, chemical, and mechanical seed scarification methods for 4 Great Basin lupine species

Jones¹,

Stevens²,

Jolley³

et al. 2016

Native Plants Journal

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A B S T R A C TSeeds of most Great Basin lupine (Lupinus spp. [Fabaceae]) species are physically dormant and thus, difficult to establish in uniform stands in seed production fields. We designed this study to examine 5 seed scarification techniques, each with 11 levels of application (including a non-scarified control), to reduce the physical seed dormancy of longspur lupine (L. arbustus Douglas ex Lindl.), silvery lupine (L. argenteus Pursh), hairy bigleaf lupine (L. prunophilus M.E. Jones), and silky lupine (L. sericeus Pursh). These 4 perennial Great Basin lupine species are of interest for both rehabilitation and restoration of degraded rangelands. We evaluated 10 treatments of each of 5 scarification methods, one mechanical, 2 thermal, and 2 chemical (sulfuric acid and sodium hypochlorite) techniques on the above-mentioned species. The sulfuric acid and the mechanical scarification treatments significantly improved germination for both silvery and silky lupine. Additionally, one thermal scarification method (60 s at 95 °C [203 °F]) was effective for silvery lupine. Both sulfuric acid and sodium hypochlorite scarification methods had treatment levels that significantly improved germination of hairy bigleaf lupine. For longspur lupine, all treatments within the 5 scarification methods either decreased or were not a significant improvement of germination as compared with the control, except for the treatment of soaking the seeds for 35 s at 95 °C (203 °F). We found scarification to be an effective tool for reducing physical dormancy in silvery lupine, hairy bigleaf lupine, and silky lupine, thus allowing for a more efficient use of limited seeds. This open access article is distributed under the terms of the CC BY NC ND license

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“…Priming prevents the induction of high-temperature dormancy in both crisphead (Valdes et al, 1985) and romaine (Cantliffe et al, 1981) lettuce (Lactuca sativa L.) types. Other benefits of priming include increasing the effectiveness of beneficial organisms in preventing seedling diseases (Taylor et al, 1985) and eliminating seedborne bacteria from Brassica species (Hill, 1999).…”

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confidence: 99%

Primed Lettuce Seeds Exhibit Increased Sensitivity to Moisture Content During Controlled Deterioration

Hill

Cunningham

Bradford

et al. 2007

horts

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The Ellis-Roberts seed viability equation is used to predict seed survival after storage at specified temperatures and moisture contents. Seed priming, which can break dormancy and accelerate germination, can also reduce seed storage life. Because primed seeds were not used in developing the Ellis-Roberts equation, the reciprocal nature of specific seed moisture content (MC, fresh weight basis) and temperatures that applies to nonprimed lettuce (Lactuca sativa L.) seeds may not apply to primed seeds. To determine how priming affects lettuce seeds in relation to the viability equation, an experiment was conducted using two cultivars, ‘Big Ben’ and ‘Parris Island Cos’. Seeds primed in polyethylene glycol 8000 (–1.45 MPa, 24 h at 15 °C) and nonprimed seeds were first adjusted to 6% and 9% moisture contents and then stored at 48 and 38 °C for up to 30 days, respectively. These storage conditions (6% MC and 48 °C; 9% MC and 38 °C) were predicted by the viability equation to result in equal longevities. Subsequent viability assays at 20 °C revealed that nonprimed seeds in both storage environments exhibited similar losses in viability over time, thus validating the Ellis-Roberts equation and the use of these conditions to apply different but equal aging stress. Primed seeds of both cultivars deteriorated faster than nonprimed seeds as expected. However, primed seeds did exhibit different rates of deterioration between the storage environments. Primed seeds stored at 9% MC and 38 °C deteriorated faster than primed seeds stored at 6% MC and 48 °C. The rate of decline in probit viability percentage was three times greater in primed ‘Big Ben’ seeds stored at 9% MC and 38 °C than for those stored at 6% MC and 48 °C (–1.34 versus –0.26 probits per day, respectively). ‘Parris Island Cos’ seeds stored at 9% MC and 38 °C had twice the rate of deterioration that those stored at 6% MC and 48 °C (–1.19 and –0.49 probits per day, respectively). The results indicate that primed lettuce seeds were more sensitive to the adverse effects of higher seed MC than were nonprimed seeds during storage at elevated temperatures.

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Recent Developments in Seed Technology

Cited by 30 publications

References 14 publications

Seed treatments for sustainable agriculture-A review

Seed treatments for sustainable agriculture-A review

Evaluation of thermal, chemical, and mechanical seed scarification methods for 4 Great Basin lupine species

Primed Lettuce Seeds Exhibit Increased Sensitivity to Moisture Content During Controlled Deterioration

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