Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2020 Jun;226(6):1567-1572.
doi: 10.1111/nph.16429. Epub 2020 Feb 21.

Heat stress during flowering in cereals - effects and adaptation strategies

S V Krishna Jagadish  1
Affiliations
Free article
Review

Heat stress during flowering in cereals - effects and adaptation strategies

S V Krishna Jagadish. New Phytol. 2020 Jun.
Free article

Abstract

Heat stress during flowering has differential impact on male and female reproductive organ viability leading to yield losses in field crops. Unlike flooded rice, dryland cereals such as sorghum, pearl millet and wheat have optimised their flower opening during cooler early morning or late evening hours to lower heat stress damage during flowering. Although previous studies have concluded that pollen viability determines seed set under heat stress, recent findings have revealed pearl millet and sorghum pistils to be equally sensitive to heat stress. Integrating flower opening time during cooler hours with increased pollen and pistil viability will overcome heat stress-induced damage during flowering under current and future hotter climatic conditions.

Keywords: early morning flowering; fertilisation and embryogenesis; heat stress; pistil viability; pollen germination and tube growth; seed set.

PubMed Disclaimer

References

    1. Aiqing S, Somayanda I, Sebastian SV, Singh K, Gill K, Prasad PVV, Jagadish SVK. 2018. Heat stress during flowering affects time of day of flowering, seed set and grain quality in spring wheat. Crop Science 58: 380-392.
    1. Bahuguna RN, Celymar AS, Shi W, Jagadish SVK. 2017. Post-flowering night respiration and altered sink activity account for high night temperature-induced grain yield and quality loss in rice (Oryza sativa L.). Physiologia Plantarum 159: 59-73.
    1. Begcy K, Sandhu J, Walia H. 2018. Transient heat stress during early seed development primes germination and seedling establishment in rice. Frontiers in Plant Science 9: 1768.
    1. Bheemanahalli R, Sathishraj R, Manoharan M, Sumanth HN, Muthurajan R, Ishimaru T, Jagadish SVK. 2017. Is early morning flowering an effective trait to minimize heat stress damage during flowering in rice? Field Crops Research 203: 238-242.
    1. Bheemanahalli R, Sunoj VSJ, Saripalli G, Prasad PVV, Balyan HS, Gupta PK, Grant N, Gill KS, Jagadish SVK. 2019. Quantifying the impact of heat stress on pollen germination, seed set, and grain filling in spring wheat. Crop Science 59: 1-13.

Publication types

LinkOut - more resources