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Effects of simulated drought stress by PEG on sprouting and seedling growth of flax(Linum usitatissimum L.)

Yan Xing-chu

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Abstract

The polyethylene glycol(PEG) was used to simulate drought to study the germination and seedling growth of flax.The results showed that seedling was more sensitive to PEG treatment than germination.5% PEG promoted sprouting,and 15% PEG were appropriate for simulating drought.Under 15%(w/v)PEG treatment,seed vigor was reduced,mean germination index(GI),vigor index(VI),hypocotyl elongation and fresh weight of seedling were repressed significantly,but no consistency was found on the primary root growth;Significant increase was also found in REC,content of malonaldehyde(MDA),proline(Pro) and soluble sugar(SS) of seedling,and difference was found among primary root,hypocotyl and cotyledon.

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What this paper is about

The polyethylene glycol(PEG) was used to simulate drought to study the germination and seedling growth of flax.The results showed that seedling was more sensitive to PEG treatment than germination.5% PEG promoted sprouting,and 15% PEG were appropriate for simulating drought.Under 15%(w/v)PEG treatment,seed vigor was reduced,mean germination index(GI),vigor index(VI),hypocotyl elongation and fresh weight of seedling were repressed significantly,but no consistency was found on the primary root growth;Significant increase was also found in REC,content of malonaldehyde(MDA),proline(Pro) and soluble sugar(SS) of seedling,and difference was found among primary root,hypocotyl and cotyledon.

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Available abstract

The polyethylene glycol(PEG) was used to simulate drought to study the germination and seedling growth of flax.The results showed that seedling was more sensitive to PEG treatment than germination.5% PEG promoted sprouting,and 15% PEG were appropriate for simulating drought.Under 15%(w/v)PEG treatment,seed vigor was reduced,mean germination index(GI),vigor index(VI),hypocotyl elongation and fresh weight of seedling were repressed significantly,but no consistency was found on the primary root growth;Significant increase was also found in REC,content of malonaldehyde(MDA),proline(Pro) and soluble sugar(SS) of seedling,and difference was found among primary root,hypocotyl and cotyledon.

Key concepts: Seedling, Hypocotyl, Linum, PEG ratio, Germination, Cotyledon, Sprouting, Polyethylene glycol

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Effects of simulated drought stress by PEG on sprouting and seedling growth of flax(Linum usitatissimum L.) — Research Paper | ScholarLens