Response of perennial woody plants to seed treatment by electromagnetic field and low-temperature plasma.

Abstract:

:Radiofrequency (5.28 MHz) electromagnetic radiation and low-temperature plasma were applied as short-term (2-15 min) seed treatments to two perennial woody plant species, including Smirnov's rhododendron (Rhododendron smirnowii Trautv.) and black mulberry (Morus nigra L.). Potential effects were evaluated using germination indices and morphometry. The results suggest that treatment with electromagnetic field stimulated germination of freshly harvested R. smirnowii seeds (increased germination percentage up to 70%), but reduced germination of fresh M. nigra seeds (by 24%). Treatment with low-temperature plasma negatively affected germination for R. smirnowii, and positively for M. nigra. The treatment-induced changes in germination depended on seed dormancy state. Longer-term observations revealed that the effects persisted for more than a year; however, even negative effects on germination came out as positive effects on plant morphometric traits over time. Treatments characterized as distressful based on changes in germination and seedling length increased growth of R. smirnowii after 13 months. Specific changes included stem and root branching, as well as increased leaf count and surface area. These findings imply that longer-term patterns of response to seed stressors may be complex, and therefore, commonly used stressor-effects estimates, such as germination rate or seedling morphology, may be insufficient for qualifying stress response. Bioelectromagnetics. 37:536-548, 2016. © 2016 Wiley Periodicals, Inc.

journal_name

Bioelectromagnetics

journal_title

Bioelectromagnetics

authors

Mildaziene V,Pauzaite G,Malakauskiene A,Zukiene R,Nauciene Z,Filatova I,Azharonok V,Lyushkevich V

doi

10.1002/bem.22003

subject

Has Abstract

pub_date

2016-12-01 00:00:00

pages

536-548

issue

8

eissn

0197-8462

issn

1521-186X

journal_volume

37

pub_type

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