Ultradry Seed Storage: Improved Strategy and Technology for Germplasm Conservation

Guang-hua, Zheng

doi:10.17520/biods.1994048

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cromarty et al (1982) recommended seed drying at low temperature (15 0 C) and low relative humidity (15%) for safe storage. Guanfhua (1994) reported that the ultradrying of seeds improves seed storability. Ultra dry (2.0 to 3.7% moisture content) seeds preserve viability better than dry (5.5 to 6.8% moisture content) seeds at 20 0 C (Ellis et al, 1996).…”

Section: Effect Of Storage Seed Moisture Levels On Seed Qualitymentioning

confidence: 99%

Assessment of the effectiveness of storage structures for maintaining the quality of maize seed stored at different moisture levels

Marahatta¹

2021

J. Agric. Nat. Res.

View full text Add to dashboard Cite

One of the main causes of food insecurity is the timely unavailability of quality seeds for smallholder farmers in developing countries. Improved storage technologies are effective in reducing storage losses. Thus, the objective of this research is to assess the traditional and emerging seed storage structures/materials for the maintenance of seed qualities. The effect of different storage conditions (moisture content of seed at the time of storage, i.e. 12±0.15% and 13.5±0.18%; storage containers such as metal bin, earthen pot, Purdue Improved Crop Storage (PICS) bag, and jute bag) on seed qualities of maize were assessed. The seed was collected from Chitwan, Nepal and a laboratory experiment was conducted at the central seed testing laboratory, seed quality control center (SQQC), Hariharbhawan, Lalitpur. The experiment was done using a two-factor complete randomized design in a four replicates design. Data regarding the seed qualities (seed moisture percentage, germination percentage, root and shoot length, and vigor index) just before store and also at 45, 90, 135, 180, and 240 days after storage (DAS) was performed as per the standard followed by International Seed Testing Association (ISTA). The germination percentage, root, and shoot length decreased with increasing storage duration. The seed stored in the higher moisture level had significantly higher seed moisture throughout the storage duration. Seed stored in the traditional structures (jute bag and earthen pot) had lower seed moisture at 120 and 180 DAS. The seed stored at lower moisture resulted in a higher germination percentage, long root, and shoot length. Up to six months of storage germination of maize seeds stored in the earthen pots, PICS bag, and Jute bags were statistically similar. The traditional storage structures are equally effective for the maintenance of seed quality of maize.

show abstract

Section: Effect Of Storage Seed Moisture Levels On Seed Qualitymentioning

confidence: 99%

Assessment of the effectiveness of storage structures for maintaining the quality of maize seed stored at different moisture levels

Marahatta¹

2021

J. Agric. Nat. Res.

View full text Add to dashboard Cite

show abstract

“…Many studies have indicated that seed aging is associated with antioxidant enzymes, MDA, and amylase activity, which is consistent with studies on E. villosa seeds. Zheng [59] showed that the AMS activity of poplar seeds tended to decrease to different degrees during storage. Hao [60] and Chang et al [61] showed that the POD activity of Pinus oleifera seeds decreased significantly, while the MDA content increased significantly with increasing storage time, and the SOD and CAT activities of sand onion seeds increased and then decreased with increasing storage time and were positively correlated with their germination indexes.…”

Section: Discussionmentioning

confidence: 99%

Storage Time Affects the Viability, Longevity, and Germination of Eriochloa villosa (Thunb.) Kunth Seeds

et al. 2023

View full text Add to dashboard Cite

The effects of storage time on Eriochloa villosa (Thunb.) Kunth seed longevity and germination were investigated. A number of physiological and biochemical indexes, such as germination indexes, seed viability, storage materials, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and α-amylase (AMS) activity, were determined to investigate the mechanisms behind E. villosa seed longevity. The longevity of E. villosa seeds under indoor dry storage conditions was more than eight years. The vitality of E. villosa seeds decreased dramatically with increasing storage time. The malondialdehyde (MDA) concentration of the seeds increased dramatically with an increase in the storage period. The SOD, POD, CAT, and AMS activities significantly decreased over time, while the soluble sugar content first increased and then decreased. Storage duration significantly affected the soluble protein content of E. villosa seeds. The germination index of the seeds correlated with their physiological and biochemical indices and showed a significant positive correlation with the soluble sugar content, SOD, POD, and AMS activity, and a significant negative correlation with the MDA concentration. This study is of great importance for understanding the characteristics of the field seed bank of E. villosa and for implementing integrated weed control measures to contribute to sustainable agricultural development.

show abstract

Low-cost seed storage technologies for development impact of small-scale seed saving entities in tropical climates

et al. 2021

View full text Add to dashboard Cite

Summary Seeds can deteriorate rapidly under high heat and humidity, making it challenging and potentially costly to store orthodox seeds effectively in the tropics, thereby affecting agriculture development. This work explores the effectiveness of novel, low-cost technologies for storing seeds in warm, humid, resource-constrained environments, focusing on maintaining the viability of seeds already dry prior to storage. Seeds of okra (Abelmoschus esculentus (L.) Moench), sorghum (Sorghum bicolor (L.) Moench), and velvet bean (Mucuna pruriens (L.) DC) were kept for 12 months under roofed, outdoor screened porches. Seed moisture content prior to treatment was 6, 9, and 12% for okra, sorghum, and velvet bean, respectively. Treatments, replicated four times at each of two locations (USA [Florida] and Thailand), were technology suites involving vacuum drawn on glass jars with a modified bicycle pump, vacuum drawn on polyethylene bags with an electric vacuum sealing machine, desiccant (calcium oxide powder or zeolite Drying Beads® at a 2:1 ratio, by weight, of seeds to desiccant) in glass jars, and nontreated seeds in paper bags. Ambient temperature and humidity were variable and high, reaching over 35 °C and 83%, respectively, at both locations. Under these conditions, okra and sorghum germination percentages (across locations) without treatment declined from over 90% initially to 30 and 0%, respectively, by month 12. Both vacuum treatments and calcium oxide maintained high germination of okra (≈ 80%) and velvet bean seeds (nearly 100%) across locations. Glass, however, was superior to polyethylene in maintaining vacuum and stabilizing the moisture content of okra and sorghum seeds. Only zeolite reduced seed moisture below initial values, drying seeds to ultradry levels of <5%. With zeolite, sorghum germination stayed near 70% over time, while okra and velvet bean germination fell to <40 and <20%, respectively, by month 12, suggesting that, with the beads kept with dry seeds in storage rather than removing the beads after reaching a target level of seed moisture, the 2:1 ratio of seed-to-bead weight was too high for seeds that are sensitive to ultralow moisture. Findings have practical implications for inexpensive household- or community-level seed storage to deliver development impact.

show abstract

Ultradry Seed Storage: Improved Strategy and Technology for Germplasm Conservation

Cited by 3 publications

References 0 publications

Assessment of the effectiveness of storage structures for maintaining the quality of maize seed stored at different moisture levels

Assessment of the effectiveness of storage structures for maintaining the quality of maize seed stored at different moisture levels

Storage Time Affects the Viability, Longevity, and Germination of Eriochloa villosa (Thunb.) Kunth Seeds

Low-cost seed storage technologies for development impact of small-scale seed saving entities in tropical climates

Contact Info

Product

Resources

About