Systematic determination of the reproductive growth stage most sensitive to high night temperature stress in rice (Oryza sativa)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F20%3A00524492" target="_blank" >RIV/86652079:_____/20:00524492 - isvavai.cz</a>

Result on the web

<a href="https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.20086" target="_blank" >https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.20086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/csc2.20086" target="_blank" >10.1002/csc2.20086</a>

Result language

angličtina

Original language name

Systematic determination of the reproductive growth stage most sensitive to high night temperature stress in rice (Oryza sativa)

Original language description

High night-temperature (HNT) stress during the reproductive stage of rice (Oryza sativa L.) reduces spikelet fertility and yield by inhibiting important physiological processes. However, specifics such as the period of time that is most sensitive to HNT, is unknown. To investigate this, we conducted four controlled-environment experiments with two rice cultivars, N22 (HNT tolerant) and WAB56-104 (HNT susceptible). These cultivars were exposed to varying durations and intensities of night temperatures (control, 24 degrees C, HNT, 30 and 35 degrees C) during the reproductive stage. The effect of HNT on spikelet fertility and grain weight varied with duration: spikelet fertility reduced by 47-77% when exposed to HNT for 15 nights, 6-29% when exposed for four nights, and 9-15% when exposed for 5.5 h (pre-midnight, 1830-0000 h or post-midnight, 0000-0530 h) for four nights. Spikelet fertility and grain weight were most sensitive to HNT during the first 4 d of anthesis, compared with 1-4, 5-8, and 9-12 d before anthesis. At anthesis, reduction in spikelet fertility did not differ significantly between pre- and post-midnight high-temperature treatments. Our results suggest that greatest sensitivity to HNT during the reproductive stage occurs during the first 4 d of anthesis, providing a reference for future studies involving HNT tolerance in rice.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Crop Science

ISSN

0011-183X

e-ISSN

—

Volume of the periodical

60

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

391-403

UT code for WoS article

000525798500030

EID of the result in the Scopus database

2-s2.0-85081259561