Physiological basis for tolerance to and recovery from pre-flowering drought in peanut

Puangbut, D., Jogloy, S., Toomsan, B., Vorasoot , N., Akkasaeng, A., Kesmala, T., Rachaputi, R. C. N., Wright, G. C. and Patanothai, A. (2010) Physiological basis for tolerance to and recovery from pre-flowering drought in peanut. Journal of Agronomy and Crop Science, 196 5: 358-367. doi:10.1111/j.1439-037X.2010.00426.x

Author Puangbut, D.
Jogloy, S.
Toomsan, B.
Vorasoot , N.
Akkasaeng, A.
Kesmala, T.
Rachaputi, R. C. N.
Wright, G. C.
Patanothai, A.
Title Physiological basis for tolerance to and recovery from pre-flowering drought in peanut
Journal name Journal of Agronomy and Crop Science   Check publisher's open access policy
ISSN 0931-2250
Publication date 2010-10
Sub-type Article (original research)
DOI 10.1111/j.1439-037X.2010.00426.x
Volume 196
Issue 5
Start page 358
End page 367
Total pages 10
Editor J. M. Greef
Place of publication Berlin, Germany
Publisher Wiley-Blackwell Verlag
Collection year 2011
Language eng
Formatted abstract
Drought during the pre-flowering stage can increase yield of peanut. There is limited information on genotypic variation for tolerance to and recovery from pre-flowering drought (PFD) and more importantly the physiological traits underlying genotypic variation. The objectives of this study were to determine the effects of moisture stress during the pre-flowering phase on pod yield and to understand some of the physiological responses underlying genotypic variation in response to and recovery from PFD. A glasshouse and field experiments were conducted at Khon Kaen University, Thailand. The glasshouse experiment was a randomized complete block design consisting of two watering regimes, i.e. fully-irrigated control and 1/3 available soil water from emergence to 40 days after emergence followed by adequate water supply, and 12 peanut genotypes. The field experiment was a split-plot design with two watering regimes as main-plots, and 12 peanut genotypes as sub-plots. Measurements of N2 fixation, leaf area (LA) were made in both experiments. In addition, root growth was measured in the glasshouse experiment. Imposition of PFD followed by recovery resulted in an average increase in yield of 24 % (range from 10 % to 57 %) and 12 % (range from 2 % to 51 %) in the field and glasshouse experiments, respectively. Significant genotypic variation for N2 fixation, LA and root growth was also observed after recovery. The study revealed that recovery growth following release of PFD had a stronger influence on final yield than tolerance to water deficits during the PFD. A combination of N2 fixation, LA and root growth accounted for a major portion of the genotypic variation in yield (r = 0.68–0.93) suggesting that these traits could be used as selection criteria for identifying genotypes with rapid recovery from PFD. A combined analysis of glasshouse and field experiments showed that LA and N2 fixation during the recovery had low genotype × environment interaction indicating potential for using these traits for selecting genotypes in peanut improvement programs.
© 2010 Blackwell Verlag GmbH
Keyword N2 fixation
Pre-flowering drought
Root growth
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
School of Agriculture and Food Sciences
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Fri, 18 Mar 2011, 13:45:20 EST by Samantha Richards on behalf of !NON-HERDC