Cargando…
Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity
There is concern over the impact of global warming on rice production due increased heat stress, coupled with decreased relative humidity (RH). It is unknown how rice yield and quality are affected by heat stress and decreased RH during the grain filling stage. We conducted experiments in controlled...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8040870/ https://www.ncbi.nlm.nih.gov/pubmed/33889448 http://dx.doi.org/10.7717/peerj.11218 |
_version_ | 1783677852215934976 |
---|---|
author | Yan, Haoliang Wang, Chunhu Liu, Ke Tian, Xiaohai |
author_facet | Yan, Haoliang Wang, Chunhu Liu, Ke Tian, Xiaohai |
author_sort | Yan, Haoliang |
collection | PubMed |
description | There is concern over the impact of global warming on rice production due increased heat stress, coupled with decreased relative humidity (RH). It is unknown how rice yield and quality are affected by heat stress and decreased RH during the grain filling stage. We conducted experiments in controlled growth chambers on six rice cultivars, varying in heat tolerance using 12 combinative treatments of three factors: two RH levels (75% and 85%), three temperature levels (the daily maximum temperature at 33 °C, 35 °C, and 37 °C), and two durations (8 d and 15 d after anthesis). Results showed that RH75% with temperature treatments significantly reduced grain weight, which was higher than RH85%. The same trend was also observed for both head rice rate and chalkiness. R168 was the most heat-tolerant cultivar, but it still had some differences in grain weight, head rice rate, and chalkiness between the two RH regimes. The lower RH was most detrimental at 35 °C, and to a lesser extent at 33 °C, but had a negligible effect at 37 °C. Our results provide a better understanding of temperature and RH’s interaction effects on rice quality during the grain filling stage, suggesting that RH should be considered in heat tolerance screening and identification to facilitate rice breeding and genetic improvement. |
format | Online Article Text |
id | pubmed-8040870 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-80408702021-04-21 Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity Yan, Haoliang Wang, Chunhu Liu, Ke Tian, Xiaohai PeerJ Agricultural Science There is concern over the impact of global warming on rice production due increased heat stress, coupled with decreased relative humidity (RH). It is unknown how rice yield and quality are affected by heat stress and decreased RH during the grain filling stage. We conducted experiments in controlled growth chambers on six rice cultivars, varying in heat tolerance using 12 combinative treatments of three factors: two RH levels (75% and 85%), three temperature levels (the daily maximum temperature at 33 °C, 35 °C, and 37 °C), and two durations (8 d and 15 d after anthesis). Results showed that RH75% with temperature treatments significantly reduced grain weight, which was higher than RH85%. The same trend was also observed for both head rice rate and chalkiness. R168 was the most heat-tolerant cultivar, but it still had some differences in grain weight, head rice rate, and chalkiness between the two RH regimes. The lower RH was most detrimental at 35 °C, and to a lesser extent at 33 °C, but had a negligible effect at 37 °C. Our results provide a better understanding of temperature and RH’s interaction effects on rice quality during the grain filling stage, suggesting that RH should be considered in heat tolerance screening and identification to facilitate rice breeding and genetic improvement. PeerJ Inc. 2021-04-09 /pmc/articles/PMC8040870/ /pubmed/33889448 http://dx.doi.org/10.7717/peerj.11218 Text en © 2021 Yan et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
spellingShingle | Agricultural Science Yan, Haoliang Wang, Chunhu Liu, Ke Tian, Xiaohai Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title | Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title_full | Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title_fullStr | Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title_full_unstemmed | Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title_short | Detrimental effects of heat stress on grain weight and quality in rice (Oryza sativa L.) are aggravated by decreased relative humidity |
title_sort | detrimental effects of heat stress on grain weight and quality in rice (oryza sativa l.) are aggravated by decreased relative humidity |
topic | Agricultural Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8040870/ https://www.ncbi.nlm.nih.gov/pubmed/33889448 http://dx.doi.org/10.7717/peerj.11218 |
work_keys_str_mv | AT yanhaoliang detrimentaleffectsofheatstressongrainweightandqualityinriceoryzasativalareaggravatedbydecreasedrelativehumidity AT wangchunhu detrimentaleffectsofheatstressongrainweightandqualityinriceoryzasativalareaggravatedbydecreasedrelativehumidity AT liuke detrimentaleffectsofheatstressongrainweightandqualityinriceoryzasativalareaggravatedbydecreasedrelativehumidity AT tianxiaohai detrimentaleffectsofheatstressongrainweightandqualityinriceoryzasativalareaggravatedbydecreasedrelativehumidity |