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Publication
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| Title of Article |
The responses for inulin content and inulin yield of Jerusalem artichoke (Helianthus tuberosus L.) genotypes and the associations of net photosynthesis rate with inulin traits to different terminal drought durations in the late-rainy season |
| Date of Acceptance |
29 September 2022 |
| Journal |
| Title of Journal |
South African Journal of Botany |
| Standard |
ISI |
| Institute of Journal |
ELSEVIER |
| ISBN/ISSN |
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| Volume |
151 |
| Issue |
Part A |
| Month |
ธันวาคม |
| Year of Publication |
2022 |
| Page |
277-287 |
| 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. |
| Keyword |
Breeding program, Drought tolerance, Physiological performance, Surrogate trait, Terminal growth stage, Water level |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ตีพิมพ์แล้ว |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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