New insights into rice phenology: discovering the effect of insolation on heading response.

IF 5.4 2区 生物学 Q1 PLANT SCIENCES
Ju-Hee Kim, So-Hye Jo, Ji-Hyeon Moon, Seo-Yeong Yang, Jae-Kyeong Baek, Yeong-Seo Song, Ji-Young Shon, Hyeon-Seok Lee
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引用次数: 0

Abstract

Precise growth management is required for climate-smart and sustainable crop production in response to climate change, with the heading stage being the most important. Research on the control of heading in rice (Oryza sativa) has mainly focused on day length and temperature; however, research on the effects of insolation is limited. Therefore, this study analyzed the differences in rice growth and heading responses under different light intensity and temperature conditions. Five early-maturing and seven medium-late-maturing rice varieties were used for each japonica heading ecology type. Our results showed that leaf age development, an indirect measure of rice phenological development, was inhibited under low light intensity and low-temperature conditions. Accordingly, the heading date was also delayed by approximately 18 days at low temperatures and 21 days at low light intensity, with no difference among ecotypes. We also found an interaction between temperature and light intensity, with the light intensity-mediated delay in heading date being affected more by high temperatures. This study demonstrated that light intensity and temperature have a major effect on heading date variation, suggesting that the impact of insolation must be considered for the accurate prediction of heading stage variation. These results could shed new light on rice phenology research and contribute to the implementation of precision agriculture.

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来源期刊
Physiologia plantarum
Physiologia plantarum 生物-植物科学
CiteScore
11.00
自引率
3.10%
发文量
224
审稿时长
3.9 months
期刊介绍: Physiologia Plantarum is an international journal committed to publishing the best full-length original research papers that advance our understanding of primary mechanisms of plant development, growth and productivity as well as plant interactions with the biotic and abiotic environment. All organisational levels of experimental plant biology – from molecular and cell biology, biochemistry and biophysics to ecophysiology and global change biology – fall within the scope of the journal. The content is distributed between 5 main subject areas supervised by Subject Editors specialised in the respective domain: (1) biochemistry and metabolism, (2) ecophysiology, stress and adaptation, (3) uptake, transport and assimilation, (4) development, growth and differentiation, (5) photobiology and photosynthesis.
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