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3 Biotech

, 9:175 | Cite as

Elevated temperature modulates rice pollen structure: a study from foothill of Himalayan agro-ecosystem in India

  • Narendra Kumar
  • Neha Jeena
  • Hukum SinghEmail author
Short Reports
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Abstract

Rice cultivation is practiced in various agro-climatic zones ranging from tropical to temperate. Anthesis is a critical stage for deciding productivity which is controlled by numerous biotic and abiotic stresses. Elevated temperature is one of the key abiotic stresses that adversely modulate the pollen formation and structure, i.e., infertility, results in productivity decline. The present study was conducted to investigate the effects of elevated temperature on morphological changes in pollen grains of rice grown in temperature gradient tunnel (TGT) constructed in filed condition. The ambient and TGT temperature varied from 31.84 °C(max) to 20.56 °C(min) and 41.91 °C(max) to 22.37 °C(min), respectively, during study period. The scanning electron and light microscopic study showed extreme morphological abnormalities viz. shape and size in pollen grains of rice exposed to elevated temperature as compared to ambient. These abnormalities induced by elevated temperature may drastically decline grain filling potential which ultimately reduces grain yield in future climate change. This study will enlighten rice researchers for further screening of rice genotypes thermotolerant to foothills of Himalayan agro-ecosystem.

Keywords

Rice Elevated temperature Pollen behavior Climate change Himalayan foothills 

Notes

Acknowledgements

Authors impart sincere thanks to Directorate of Rice Research (ICAR), Hyderabad, India for providing rice genotypes. We also thankful to the Department of Biological Sciences, College of Basic Sciences & Humanities and the Department of Veterinary Anatomy, College of Veterinary and Animal Sciences, Pantnagar for providing their microscope facilities.

Compliance with ethical standards

Conflict of interest

The authors declared there is no conflict of interest in this manuscript.

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Copyright information

© King Abdulaziz City for Science and Technology 2019

Authors and Affiliations

  1. 1.Department of Plant Physiology, CBSHG B. Pant University of Agriculture and TechnologyPantnagarIndia
  2. 2.Department of BiotechnologyBhimtal Campus Kumaun UniversityNainitalIndia
  3. 3.Forest Ecology and Climate Change DivisionForest Research InstituteDehradunIndia

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