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Evaluation of the inorganic compound leakage and carbohydrates as indicator of physiological potential of Ulmus parvifolia seeds

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Abstract

Inorganic compound leakage and change of carbohydrate were measured in Ulmus parvifolia seeds throughout accelerated aging under 35°C and 75% relative humidity (RH) to investigate whether these indicators can be used as a rapid vigor test for efficient seed bank management. Accelerated aging seeds treated for 0–14 days exhibited loss of germinability in the longest aging treated seeds (11%, 14 days) compared to a good performance of 52% for control (0 day) seeds. Leachate electrical conductivity (EC) increase had strong negative correlation with seed vigor (−0.9). Magnesium ion concentration in electrolyte leakage from artificial aged seeds showed positive correlation (r = 0.94, P < 0.01). The ratios of inorganic ions showed that K+/Mg2+, Ca2+/Mg2+, and Na+/Mg2+ were inversely correlated with germination (−0.93, −0.82, and −0.91, respectively). Increases in starch and total soluble sugar content in aged seeds were associated with a decrease in seed vigor. In conclusion, EC, magnesium ion concentration, K+/Mg2+, Ca2+/Mg2+, and Na+/Mg2+ ratios and starch and total soluble sugar content could provide a sensitive and accurate index for the assessment of U. parvifolia seed vigor.

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Fig. 1
Fig. 2

Abbreviations

EC:

Electrical conductivity

MGT:

Mean germination time

GV:

Germination value

AA:

Accelerated aging

TNC:

Total non-structural carbohydrate

TSS:

Total soluble sugar

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Correspondence to Du Hyun Kim.

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Kim, D.H., Han, S.H. & Song, J.H. Evaluation of the inorganic compound leakage and carbohydrates as indicator of physiological potential of Ulmus parvifolia seeds. New Forests 41, 3–11 (2011). https://doi.org/10.1007/s11056-010-9210-3

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