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Determination of Differences in Chilling Susceptibility of Two Soybean Varieties by Means of in vivo Chlorophyll Fluorescence Measurements

Determination of Differences in Chilling Susceptibility of Two Soybean Varieties by Means of in... Chilling susceptibility of two soybean varieties, i.e. cv. Maple Arrow and cv. Evans, in the vegetative state (V 3.0) was determined by measuring in vivo chlorophyll fluorescence of leaves exposed to low positive temperatures. In the more susceptible variety Maple Arrow quite distinct deviations from the reference fluorescence data are seen at temperatures between 6.5 and 4.8°C, but not until 5.5. to 2.5°C in the variety Evans. Fluorescence characteristics, i.e. the fluorescence decrease Rfd, the appearance of low‐waves, the photochemical quenching coefficient at steady‐state and the initial slope of the non‐photochemical quenching coefficient qNP indicate that the two varieties differ in their susceptibility by about 1‐2°C at this stage of development. Our results suggest that measurement of in vivo chlorophyll fluorescence might serve as a suitable rapid monitoring method of pre‐screening soybean varieties for chilling susceptibility, as required in plant breeding. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Agronomy and Crop Science Wiley

Determination of Differences in Chilling Susceptibility of Two Soybean Varieties by Means of in vivo Chlorophyll Fluorescence Measurements

Journal of Agronomy and Crop Science , Volume 164 (2) – Mar 1, 1990

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References (21)

Publisher
Wiley
Copyright
Copyright © 1990 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0931-2250
eISSN
1439-037X
DOI
10.1111/j.1439-037X.1990.tb00788.x
Publisher site
See Article on Publisher Site

Abstract

Chilling susceptibility of two soybean varieties, i.e. cv. Maple Arrow and cv. Evans, in the vegetative state (V 3.0) was determined by measuring in vivo chlorophyll fluorescence of leaves exposed to low positive temperatures. In the more susceptible variety Maple Arrow quite distinct deviations from the reference fluorescence data are seen at temperatures between 6.5 and 4.8°C, but not until 5.5. to 2.5°C in the variety Evans. Fluorescence characteristics, i.e. the fluorescence decrease Rfd, the appearance of low‐waves, the photochemical quenching coefficient at steady‐state and the initial slope of the non‐photochemical quenching coefficient qNP indicate that the two varieties differ in their susceptibility by about 1‐2°C at this stage of development. Our results suggest that measurement of in vivo chlorophyll fluorescence might serve as a suitable rapid monitoring method of pre‐screening soybean varieties for chilling susceptibility, as required in plant breeding.

Journal

Journal of Agronomy and Crop ScienceWiley

Published: Mar 1, 1990

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