Abstract
Different terminal drought durations might impact inulin traits of Jerusalem artichoke (JA) and some physiological traits are expected to be relevant to their genotype response. Therefore, the aims of this study were to investigate the effect of different durations of terminal drought on inulin content and inulin yield as well as the associations among inulin traits, net photosynthesis rate (Pn), and SPAD chlorophyll meter reading (SCMR) in JA genotypes. The field experiment was designed as a split-plot design with four replications during the late-rainy seasons over two years (2017/18 and 2018/19). The main plots were three water levels composed of optimal conditions (SD0), short (SD1), and long (SD2) durations of terminal drought. Six JA genotypes (HEL256, JA37, HEL253, JA4, JA60, and JA125) were arranged in subplots. All genotypes showed that inulin content in tubers was clearly significantly increased, whilst inulin yield drastically decreased under different terminal drought durations in comparison with optimal conditions. Among six genotypes, only HEL256, JA37, JA60, and JA125 had high inulin content coupled with high Pn under SD0, and they had high inulin content under SD1, mainly due to high SCMR. JA37, JA4, JA60, and JA125 had a high inulin yield under SD2, might be they had high Pn, indicating that these genotypes could be used as potential parental lines through plant breeding programs for the improvement of new varieties suitable for growing in terminal drought prone-areas. Based on data for two years, inulin content had significant positive associations with Pn (p < 0.01) and SCMR (p < 0.05) under SD0 and SD1, respectively. Inulin yield showed significantly (p < 0.05 for 2017/18 and p < 0.01 for 2018/19) positive associations with Pn under SD2, these results indicated that selection genotypes with high Pn and SCMR could be effective as an indirect selection in acquiring high inulin traits simultaneously. Finally, our results suggest that SCMR could be used as a surrogate trait as it is a simple tool for drought-tolerant genotype screening in JA in order to identify high inulin content in tubers under short terminal drought durations.
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Claims 11
Claim · model-written summary
Terminal drought significantly increased tuber inulin content relative to optimal conditions in all genotypes.
- Taxon
- Jerusalem artichoke
.jpg?width=60)
Helianthus tuberosust0 - Treatment
- different terminal drought durationse0
- Outcome
- inulin content in tuberse0
- Direction
- increasede0
- Comparator
- optimal conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“All genotypes showed that inulin content in tubers was clearly significantly increased, whilst inulin yield drastically decreased under different terminal drought durations in comparison with optimal conditions”
t0“Jerusalem artichoke”
Claim · model-written summary
Terminal drought drastically decreased inulin yield relative to optimal conditions in all genotypes.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Treatment
- different terminal drought durationse0
- Outcome
- inulin yielde0
- Direction
- decreasede0
- Comparator
- optimal conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All genotypes showed that inulin content in tubers was clearly significantly increased, whilst inulin yield drastically decreased under different terminal drought durations in comparison with optimal conditions”
t0“Jerusalem artichoke”
Claim · model-written summary
HEL256, JA37, JA60, and JA125 had high inulin content and Pn under SD0.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Material
- HEL256, JA37, JA60, and JA125e0
- Outcome
- high inulin content coupled with high Pne0
- Setting
- SD0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only HEL256, JA37, JA60, and JA125 had high inulin content coupled with high Pn under SD0”
t0“Jerusalem artichoke”
Claim · model-written summary
HEL256, JA37, JA60, and JA125 had high inulin content under SD1, mainly due to high SCMR.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Material
- HEL256, JA37, JA60, and JA125e0
- Outcome
- high inulin contente0
- Qualifier
- mainly due to high SCMRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only HEL256, JA37, JA60, and JA125 had high inulin content coupled with high Pn under SD0, and they had high inulin content under SD1, mainly due to high SCMR”
t0“Jerusalem artichoke”
Claim · model-written summary
JA37, JA4, JA60, and JA125 had high inulin yield under SD2.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Material
- JA37, JA4, JA60, and JA125e0
- Outcome
- high inulin yielde0
- Setting
- SD2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA37, JA4, JA60, and JA125 had a high inulin yield under SD2”
t0“Jerusalem artichoke”
Claim · model-written summary
Inulin content had a significant positive association with Pn under SD0.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- inulin contente0
- Direction
- positivee0
- Qualifier
- Pne0
- Setting
- SD0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inulin content had significant positive associations with Pn (p < 0.01) and SCMR (p < 0.05) under SD0 and SD1, respectively”
t0“Jerusalem artichoke”
Claim · model-written summary
Inulin content had a significant positive association with SCMR under SD1.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- inulin contente0
- Direction
- positivee0
- Qualifier
- SCMRe0
- Setting
- SD1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inulin content had significant positive associations with Pn (p < 0.01) and SCMR (p < 0.05) under SD0 and SD1, respectively”
t0“Jerusalem artichoke”
Claim · model-written summary
Inulin yield had a significant positive association with Pn under SD2 in both years.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- Inulin yielde0
- Direction
- positivee0
- Qualifier
- Pne0
- Setting
- SD2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inulin yield showed significantly (p < 0.05 for 2017/18 and p < 0.01 for 2018/19) positive associations with Pn under SD2”
t0“Jerusalem artichoke”
Claim · model-written summary
The authors propose JA37, JA4, JA60, and JA125 as potential parents for varieties suited to terminal drought areas.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- potential parental linese0
- Qualifier
- terminal drought prone-arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these genotypes could be used as potential parental lines through plant breeding programs for the improvement of new varieties suitable for growing in terminal drought prone-areas”
t0“Jerusalem artichoke”
Claim · model-written summary
The authors propose high Pn and SCMR for indirect selection of high inulin traits.
- Taxon
- Jerusalem artichokeHelianthus tuberosust0
- Outcome
- indirect selection in acquiring high inulin traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“selection genotypes with high Pn and SCMR could be effective as an indirect selection in acquiring high inulin traits simultaneously”
t0“Jerusalem artichoke”
Claim · model-written summary
The authors suggest SCMR as a surrogate for screening high tuber inulin content under short terminal drought.
Verbatim
e0“SCMR could be used as a surrogate trait as it is a simple tool for drought-tolerant genotype screening in JA in order to identify high inulin content in tubers under short terminal drought durations”
The same questions in other papers
drought · molecular: metabolites · Helianthus tuberosus (Jerusalem artichoke)Results differ
1 paper in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- positive
drought · yield · Helianthus tuberosus (Jerusalem artichoke)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.