Physiological and biochemical responses of ultra-dry storage of Elymus dahuricus seed

Zhihong,

doi:10.5897/ajb11.1555

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Other studies focusing on the effect of moisture content on germination have shown lower SMC to be advantageous in the maintenance of seed viability [6,25]. Lower seed moisture content in seed storage was shown to be beneficial by reducing lipid peroxidation of cell membranes and enhancing the activity of antioxidant enzymes after imbibition, thereby slowing the decline in viability [26,27]. This study also agreed with other studies that lower SMC for orthodox seeds encourages germination performance.…”

Section: Discussionsupporting

confidence: 88%

Effect of Desiccation and Storage Environment on Longevity of Ehretia cymosa Thonn. Seeds

et al. 2021

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Globally, forestry faces challenges in the availability of seeds due to limited knowledge on seed handling of various species. Forestry seeds are constantly being reviewed and classified as either recalcitrant, intermediate, or orthodox based on their storage behavior. It is essential to understand the tree seed storage behavior to maintain seed viability and thus minimize seed losses. There is scanty literature combining factors of seed moisture content (6%, 9%, 12%, 15%, and 20%), seed storage temperature (20 o C, 5 o C and -20 o C), seed storage duration (1, 4, 9 and 12 months), and germination in different sites with varying environmental variables. Ehretia cymosa is important in the Afromontane forestry landscape as a medicinal, rehabilitation, and conservation species. This study conducted desiccation and storage studies and their influence on the viability of E. cymosa seeds. The study sought to determine the optimum conditions for the storage of Ehretia cymosa that maintains viability. This study observed that E. cymosa dried to seed moisture content of 6%, stored for 12 months at 20 o C and sown in the laboratory had the highest germination performance (27.6 ± 3.18%) (p<0.05). This confirms that E. cymosa seeds exhibit orthodox storage behavior. The authors recommend longer storage studies (>12months) to determine the actual longevity of the seeds of this species. The significance of these results would be useful for foresters and farmers that would need to use this species for various purposes.Contribution/Originality: The paper's primary contribution is finding that Ehretia cymosa seeds exhibit orthodox storage behavior. This finding is important since it will improve the current practice of handling and storage of E. cymosa seeds to enhance viability and minimize seed losses. INTRODUCTIONTrees seeds have in previous studies been classified as either orthodox, intermediate, or recalcitrant based on the moisture content level at storage [1,2]. Orthodox seeds tolerate desiccation to a low moisture content of between 2-5% [3]. Intermediate category of seeds have been observed from other studies that they can be dried to certain levels, but not as low as orthodox species, and often observed to fail to survive sub-zero temperatures [4,5].Seeds that are not tolerant and cannot survive dehydration are categorized as recalcitrant [5,6]. Variability in seed recalcitrance and desiccation tolerance has previously been studied in two ways: desiccation sensitivity and post-

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Section: Discussionsupporting

confidence: 88%

Effect of Desiccation and Storage Environment on Longevity of Ehretia cymosa Thonn. Seeds

et al. 2021

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“…Other studies focusing on the effect of moisture content on germination have shown lower SMC to be advantageous in the maintenance of seed viability (Balouchi et al, 2017; De Vitis et al, 2020). Lower seed moisture content in seed storage was shown to be bene cial by reducing lipid peroxidation of cell membranes and enhancing the activity of antioxidant enzymes after imbibition, thereby slowing the decline in viability (Li et al, 2020;Zhi-Hong et al,2011). This study also agreed with other studies that lower SMC for orthodox seeds encourages germination performance.…”

Section: Discussionsupporting

confidence: 88%

Effect of Desiccation and Storage Environment on Longevity of Ehretia Cymosa Thonn. Seeds.

Angaine¹,

Ndungu²,

Onyango³

et al. 2020

Preprint

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Background: Globally, forestry faces challenges in the availability of seeds due to limited knowledge on seed handling of various species. Forestry seeds are constantly being reviewed and classified as either recalcitrant, intermediate, or orthodox based on their storage behavior. It is essential to understand the tree seed storage behavior to maintain seed viability and thus minimize seed losses. There is scanty literature combining factors of seed moisture content (6%, 9%, 12%, 15%, and 20%), seed storage temperature (20oC, 5oC and -20oC), seed storage duration (1, 4, 9 and 12 months), and germination in different sites with varying environmental variables. Ehretia cymosa is important in the Afromontane forestry landscape as a medicinal, rehabilitation, and conservation species. This study conducted desiccation and storage studies and their influence on the viability of E. cymosa seeds. The study sought to determine the optimum conditions for the storage of Ehretia cymosa that maintains viability. Results: This study observed that E. cymosa dried to seed moisture content of 6%, stored for 12 months at 20oC and sown in the laboratory had the highest germination performance (27.6 ± 3.18%) (p<0.05). Conclusion: This confirms that E.cymosa seeds exhibit orthodox storage behavior. The authors recommend longer storage studies (>12months) to determine the actual longevity of the seeds of this species. The significance of these results would be useful for foresters and farmers that would need to use this species for various purposes.

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Dahurelmusin A, a Hybrid Peptide–Polyketide from Elymus dahuricus Infected by the Epichloë bromicola Endophyte

Song

Zhang

et al. 2016

Org. Lett.

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One novel hybrid peptide-polyketide, dahurelmusin A (1), was isolated from Elymus dahuricus infected by the Epichloë bromicola endophyte. Comprehensive spectroscopic analysis revealed that 1 is the first example of hybrid peptide-polyketide possessing an unprecedented 5-hydroxy-2,2,4,6-tetramethyl-3-oxooctanoic acid moiety. The single-crystal X-ray diffraction analyses allowed the absolute configuration assignment of this compound. Compound 1 also exhibited significant insecticidal activities against Rhopalosiphum padi and Brevicoryne brassicae with LC values of 0.092 and 0.251 mM, respectively.

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Physiological and biochemical responses of ultra-dry storage of Elymus dahuricus seed

Cited by 3 publications

References 5 publications

Effect of Desiccation and Storage Environment on Longevity of Ehretia cymosa Thonn. Seeds

Effect of Desiccation and Storage Environment on Longevity of Ehretia cymosa Thonn. Seeds

Effect of Desiccation and Storage Environment on Longevity of Ehretia Cymosa Thonn. Seeds.

Dahurelmusin A, a Hybrid Peptide–Polyketide from Elymus dahuricus Infected by the Epichloë bromicola Endophyte

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