The different influences of drought stress at the flowering stage on rice physiological traits, grain yield, and quality

Yang, Xiaolong; Wang, Benfu; Chen, Liang; Li, Ping; Cao, Cougui

doi:10.1038/s41598-019-40161-0

Cited by 207 publications

(157 citation statements)

References 64 publications

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“…Severe drought stress during reproductive stage of rice accounted for economic losses of 48 to 94% (Kim et al 2020). Furthermore, it also resulted in poor quality and aroma of rice grains (Arsa et al 2017;Yang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

et al. 2020

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Abstract. Ria RP, Lakitan B, Sulaiman F, Kartika K, Suwignyo RA. 2020. Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season. Biodiversitas 21: 3008-3017. Cultivation of rice during second growing season at riparian wetlands in Indonesia must deal with drought conditions at reproductive stage. Seed priming can speed up seed emergence and produces vigorous seedlings. Objective of this study was to screen upland rice varieties which were positively responded to seed priming and tolerant to drought during late vegetative and/or reproductive stage. Results of this study indicated that osmo-priming showed positive effects on seed emergence, percentage of germinated seed, and time to reach 50% germination. Effects of osmo-priming on seedling growth did not go beyond four weeks after seedlings had been transplanted. Among nine varieties screened, Inpago 10 exhibited better response to seed priming during late vegetative stage as it produced the highest number of tillers and total leaf area. However, at harvest, osmo-priming with 20% PEG lowered filled spikelet and weight of 100 grains but did not affect yield. Drought during late vegetative stage lessened number of tillers but after drought-treated plants recovered during reproductive stage, percentage of filled spikelet and grain size were comparable to those of control plants. Meanwhile, drought imposed during reproductive stage decreased percentage of filled spikelet and grain yield. Despite its better performance under drought conditions, leaf rolling score was higher during heading stage in Inpago 10. This phenomenon indicated that leaf rolling was not forced by drought, rather it was a quick response of Inpago 10 variety to limit water loss due to transpiration.

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Section: Introductionmentioning

confidence: 99%

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

et al. 2020

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“…Submergence of rice plants for one to two weeks due to flash flooding is another major constraint prevailing mainly in rainfed lowlands [19]. The long duration cultivars usually come across with flooding at early stages followed by drought during flowering, resulting in huge yield losses [20]. Similarly, salinity which is characterized by high concentration of soluble salts is another widespread soil problem next only to drought and acts as a serious limitation for rice production worldwide [21].…”

Section: Major Abiotic Stresses In Ricementioning

confidence: 99%

Abiotic Stress Tolerance-Progress and Pathways of Sustainable Rice Production

et al. 2021

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Rice is globally a major food crop and its production has progressively been affected by various types of abiotic stresses especially drought, flooding, salinity, heat and cold in most of the cultivable rice ecosystems. The incidence, intensity and duration of these stresses are anticipated to aggravate due to climate change consequences, demanding resilient yields in these situations to be essential. Present paper deals with reviewing various types of abiotic stresses and their mitigation strategies for enhancing and stabilizing rice production in stress prone areas. Review of available literature pertaining to the study area has been used as research methodology for this paper. The available literature suggests that stress-tolerant varieties can serve as the most viable strategy to contribute in coping with the problem of abiotic stresses. Although, good progress has been made in the development of stress-tolerant rice varieties (STRVs) and incessant efforts are being made to spread these varieties in target areas, adoption by farmers is yet to meet expectations. Advantage, affordability, awareness and availability are the main factors responsible for adopting of any technology. The adoption of stress-tolerant varieties has not reached its potential, predominantly due to the lack of awareness and non-availability of seeds amongst farmers. Strategic and intentional collaborations should be ensured for scaling the sustainable delivery and diffusion of STRVs. A promotional roadmap that ensures the linkages between private and public seed sectors remains the key factor for its successful adoption. Similarly, strengthening of formal, informal and semi-formal seed systems is crucial to accelerate the dissemination of these varieties. There is an imperative need to create strategic plans for the development of varieties possessing multiple stress tolerance. Significant investments for sustainability of rice production in stress prone areas form the essential component of long-term agricultural development. The sooner these investments and strategies are accomplished, the greater the gains are expected.

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“…Water deficit could occur at any time from booting to mature stage, and the intensity of stress depends on the duration of water-deficit 7 . However, the sensitivity to water deficit shows significant difference at different growth period of rice, many previous studies have shown that reproductive stage is the most susceptible period for rice [8][9] . The physiological activity and metabolism of rice flag 72 leaves were significantly reduced under drought stress at heading stage, which resulted 73 in a conspicuous decrease in dry matter accumulation.…”

Section: Introduction 57mentioning

confidence: 98%

Physiological Mechanism of Drought-Resistant Rice Coping with Drought Stress

Wang

Yang

Cheng

et al. 2020

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Drought stress is one of major threats to rice production. The weakening of leaf photosynthesis due to drought is the main reason for the reduction of grain yield, but its mechanism is still obscure. The objectives of this study were to reveal the physiological mechanism of drought stress affecting photosynthetic capacity and grain yield. Pot experiments were conducted with three rice cultivars, Hanyou113 (HY113), Huanghuazhan (HHZ) and Zhonghan3 (ZH3) under four water management treatments (traditional flooding (CK), mild drought stress (LD), moderate drought stress (MD) and severe drought stress (HD)) in 2013 and 2014. Compared with CK, grain yield was significantly reduced by 14.9%, 30.8% and 12.8% in HY113, HHZ and ZH3 under mild drought stress, 32.9%, 33.7% and 22.9% in HY113, HHZ and ZH3 under moderate drought stress and 53.6%, 45.6% and 30.7% in HY113, HHZ and ZH3 under severe drought stress, respectively. The photosynthetic rate (Pn) decreased by 49.0% from 20.0 to 10.2 µmol m-2 s-1 in HY113, and 67.6% from 23.4 to 7.58 µmol m-2 s-1 in HHZ, and 39.3% from 23.4 to 14.2 in ZH3. The Pn of HHZ was similar to that of ZH3 under CK conditions. The yield reduction of drought-resistant cultivars was smaller than that of conventional cultivars. Maintaining leaf water potentia (LWP), Pn, photosystem II (PSII) original light energy conversion efficiency, non–photochemical quenching coefficient (NPQ), and increasing in the ratio of photochemical reaction energy in fluorescence and antioxidant enzyme activity, is the physiological basis to achieve a relatively high photosynthesis. These traits could be the target for breeder to developing drought-tolerant varieties.

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The different influences of drought stress at the flowering stage on rice physiological traits, grain yield, and quality

Cited by 207 publications

References 64 publications

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

Cross-ecosystem utilizing primed seeds of upland rice varieties for enriching crop diversity at riparian wetland during dry season

Abiotic Stress Tolerance-Progress and Pathways of Sustainable Rice Production

Physiological Mechanism of Drought-Resistant Rice Coping with Drought Stress

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