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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Crop Science

ISSN

0011-183X

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

391-403

Kód UT WoS článku

000525798500030

EID výsledku v databázi Scopus

2-s2.0-85081259561