Paper · Institutional Repositories DataBase (IRDB)

Monitoring Photosynthetic Pigments of Shade-Grown Tea from Hyperspectral Reflectance

SANO, Tomohito; HORIE, Hideki

3
claims
6
verbatim quotes
0
citations
4
research areas
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Open access · cc-by-nc-nd

Abstract

The highest quality green tea is cultivated using shading treatments in Japan; however, shading can lead to early mortalities of tea due to excessive environmental stress.The allocation of photosynthetic pigments, chlorophyll a, b and carotenoids, could be a good indicator for evaluating production or environmental stress in plants; thus, developing an in-situ method to monitor photosynthetic pigments is useful for agricultural management.To assess the accuracy of the estimation of photosynthetic pigment contents with existing supervised learning models, four different approaches were compared including random forests, kernel-based extreme learning machine (KELM), deep belief nets and support vector machine.Overall, KELM had the highest performance with a root mean square error of 1.95 0.36 g cm -2 , 1.08 0.11 g cm -2 and 0.68 0.10 g cm -2 for estimating chlorophyll a, b and carotenoid contents, respectively.

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Claims 3

Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

KELM had the highest performance estimating chlorophyll a content, with a root mean square error of 1.95 0.36 g cm -2.

Taxon
Teat0
Outcome
chlorophyll ae0
Value
1.95 0.36 g cm -2e0
Comparator
highest performancee0

Verbatim

e0

“KELM had the highest performance with a root mean square error of 1.95 0.36 g cm -2 , 1.08 0.11 g cm -2 and 0.68 0.10 g cm -2 for estimating chlorophyll a, b and carotenoid contents, respectively”

✓ located verbatim in the source · abstract, characters 726–921 · show in text ↑
t0

“Tea”

✓ located verbatim in the source · title, characters 50–53 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

KELM estimated chlorophyll b with a root mean square error of 1.08 0.11 g cm -2.

Taxon
Teat0
Outcome
be0
Value
1.08 0.11 g cm -2e0

Verbatim

e0

“1.08 0.11 g cm -2 and 0.68 0.10 g cm -2 for estimating chlorophyll a, b and carotenoid contents, respectively”

✓ located verbatim in the source · abstract, characters 812–921 · show in text ↑
t0

“Tea”

✓ located verbatim in the source · title, characters 50–53 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

KELM estimated carotenoids with a root mean square error of 0.68 0.10 g cm -2.

Taxon
Teat0
Outcome
carotenoid contentse0
Value
0.68 0.10 g cm -2e0

Verbatim

e0

“0.68 0.10 g cm -2 for estimating chlorophyll a, b and carotenoid contents, respectively”

✓ located verbatim in the source · abstract, characters 834–921 · show in text ↑
t0

“Tea”

✓ located verbatim in the source · title, characters 50–53 · show in text ↑