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Publication
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| Title of Article |
Rooting and physiological traits responses to early drought stress of sugarcane cultivars |
| Date of Acceptance |
16 October 2017 |
| Journal |
| Title of Journal |
Sugar Tech |
| Standard |
ISI |
| Institute of Journal |
Springer |
| ISBN/ISSN |
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| Volume |
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| Issue |
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| Month |
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| Year of Publication |
2018 |
| Page |
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| Abstract |
Drought during the vegetative development is usually one of the limiting factors to sugarcane yield. Information on responses of above and below ground parts of sugarcane plant in one experiment will be useful in explaining the drought resistant mechanism and improving genotypes for high productivity under drought conditions. Therefore, the objective of this study was to investigate the response of rooting and physiological traits to water stress at early growth stage conditions of three sugarcane cultivars. The experiment was conducted under pot conditions using a 2×3 factorial in randomized complete block design with four replications. Two water regimes were assigned as factor A, i.e. well-watering control and water stress at early growth stage and three commercial sugarcane cultivars, reported to be drought resistant, were assigned as factor B. Shoot dry weight, stalk height, stalk diameter, rooting traits such as root volume, root length, root surface area and root/shoot ratio and physiological traits namely stomatal conductance, SPAD chlorophyll meter reading and chlorophyll fluorescence were measured during drought and re-watering periods. Different responses to natural water deficit during the formative growth phase conditions occurred in the three sugarcane cultivars. Roots and physiological responses such as root length, chlorophyll fluorescence and stomatal conductance at stressed period were important factors contributing to sugarcane biomass yields. In addition, the partitioning of assimilate i.e. root/shoot ratio during drought and recovery period was a key trait for maintenance of cane biomass. The contribution of more proportion of assimilates to shoot at re-watering period is a preferred character. This information will be useful in explaining appropriate mechanisms and recommendation of the surrogate traits for improving sugarcane genotypes in breeding program for drought at early growth stage resistance. |
| Keyword |
water deficit, root/shoot ratio, stomatal conductance, root length |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| 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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