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ARS Home » Midwest Area » Columbus, Ohio » Soil Drainage Research » Research » Publications at this Location » Publication #154846
Title: UNRAVELING PLANT RESPONSES TO STRESS BY DIGITAL IMAGE SEQUENCE PROCESSING

Author
item Vantoai, Tara
item YANG, Y - THE OHIO STATE UNIVERSITY
item LING, P - THE OHIO STATE UNIVERSITY
item KACIRA, M - HARRAN UNIVERSITY
item BORU, G - THE OHIO STATE UNIVERSITY
item Roberts, Virginia
item HUA, D - THE OHIO STATE UNIVERSITY
item BISHOP, B - THE OHIO STATE UNIVERSITY

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 7/7/2003
Publication Date: 11/2/2003
Citation: Vantoai, T.T., Yang, Y., Ling, P., Kacira, M., Boru, G., Roberts, V.S., Hua, D., Bishop, B. 2003. Unraveling plant responses to stress by digital image sequence processing. CD-ROM. MADISON, WI: ASA-CSSA-SSSA.

Interpretive Summary:

Technical Abstract: Flooding is a common environmental stress that suppresses plant growth. This study was conducted to test the use of machine vision extracted plant features for early, non-contact, and quantitative detection of plant responses to flooding. Top projected canopy area (TPCA) of soybean plants during the two-week flooding was obtained by an image processing technique. Plant movement was calculated from the average daily TPCA. Plant movement in response to flooding can be divided into two phases: the first "reactive" phase occurs immediately after the stress and is followed by the second "acclimatized" phase. The duration of the reactive phase was 2 to 4 days shorter in the flood-tolerant "107" genotype than the flood-susceptible"157" genotype, indicating that the flood-tolerant genotype acclimatized more quickly to flooding stress than the flood-susceptible genotype. Within the first day of flooding, canopy growth detected by TPCA was reduced by about 50%. Regression analysis of the daily maximum TPCA values against day of flooding fits the two-straight-line spline models with R-square values from 0.82 to 0.98. The slope of the growth curve and the point at which the slope changes reveal the more flood-tolerant characteristics of genotype "107" as compared to genotype "157". TPCA offers a non-destructive technique, more sensitive than plant height, to quantify canopy growth and detect genotypic differences of soybean to flooding stress.