Effect of water deficit on sporogenesis in wheat (Triticum aestivum L.)
Abstract
Plants of Triticum aestivum L., cv. Gabo, were grown in a glasshouse for 4 weeks and then transferred to a controlled environment with 20±1 °C temperature and 16 h photoperiod. They were subjected to water deficit by withholding the water supply during various stages of floral development, including those immediately before meiosis and all stages until just after anthesis. The proportion of apparently normal florets which produced grain was reduced when water deficit occurred during and immediately after meiosis in the generative tissues. The effect of this reduced grain set on total grain yield was partially compensated by an increase in the weight of the remaining grains. Cross-pollination between stressed and well-watered plants showed that grain set was reduced as a direct consequence of the induction of male sterility by water stress, whereas female fertility was unaffected. A large proportion of the anthers on water-stressed plants were small and shrivelled, did not dehisce normally and contained pollen which was devoid of normal cytoplasmic constituents and showed no staining reaction with triphenyl tetrazolium chloride. This effect on male fertility was not a result of desiccation of the sporogenous tissue, but an indirect outcome of the decrease in water potential elsewhere in the plant.
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During the meiotic phase, wheat and rice suffered from 35-75% reduction in grain set due to water deficit.
“During the meiotic phase, wheat and rice suffered from the 35–75% reduction in grain set due to water deficit [40,41].”
From Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review (2019) · cites this paper as [40]
Cites
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Impact of Climate Change on Crops Adaptation and Strategies to Tackle Its Outcome: A Review
Raza, A., Razzaq, A., Mehmood, S. S., Zou, X., Zhang, X., Lv, Y., & Xu, J. (2019) · Plants · doi:10.3390/plants8020034 · Cited by 1,762 · see citing works
“During the meiotic phase, wheat and rice suffered from the 35–75% reduction in grain set due to water deficit [40,41].”
BackgroundEffects of drought and high temperature stress on synthetic hexaploid wheat
Pradhan, G. P., Prasad, P. V. V., Fritz, A. K., Kirkham, M. B., & Gill, B. S. (2012) · Functional Plant Biology · doi:10.1071/fp11245 · Cited by 299 · see citing works
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Self-citationCrop adaptation to climate change as a consequence of long-term breeding
Snowdon, R. J., Wittkop, B., Chen, T.-W., & Stahl, A. (2021) · Theoretical and Applied Genetics · doi:10.1007/s00122-020-03729-3 · Cited by 172 · see citing works
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- Authors
- SAINI, H. S., & ASPINALL, D.
- Affiliations
- The University of Adelaide (AU)
- Venue
- Annals of Botany
- Publisher
- Oxford University Press (OUP)
- Published
- 1981-11
- Volume
- 48
- Issue
- 5
- Pages
- 623-633
- ISSN
- 0305-7364 (ISSN-L)
- 1095-8290
- OpenAlex
- W2404727944
- Cited by
- 188
- References
- 10
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 7 · 2021: 6 · 2020: 4 · 2019: 10 · 2018: 8 · 2017: 9 · 2016: 10 · 2015: 6 · 2014: 7 · 2013: 11 · 2012: 4
- FWCI
- 1.59
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Annals of Botany (publishedVersion)
- Funders
- University of Adelaide
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant Reproductive Biology
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Stress Responses and Tolerance
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Wheat and Barley Genetics and Pathology
- Keywords
- drought stress, sporogenesis, wheat, meiosis, male sterility, grain set, grain yield, anther development, pollen viability, water potential, flower development, cross-pollination
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