Effect of Drought Stress at Different Growth Stages on Yield and Yield Components of Six Rice (Oryza sativa L.) Genotypes

Moonmoon, Sharifunnessa; Islam, MN

doi:10.5455/faa.277118

Cited by 35 publications

(25 citation statements)

References 8 publications

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“…This might be attributed to the function of optimal supplemental irrigation during the dry spell at the terminal stage of rice. Similar results reported by ( Cattivelli et al., 2008 ; Moonmoon and Islam, 2017 ), the water stress at critical growth stages reduce grain yield of rice. Improving the status of water at the reproductive stage helps to sustain reproductive success and the partition of assimilates for improving yields in water-limited conditions ( Blum, 2009 ).…”

Section: Resultssupporting

confidence: 88%

Supplementary irrigation for managing the impact of terminal dry spells on the productivity of rainfed rice (Oryza sativa L.) in Fogera Plain, Ethiopia

Molla

Tesfaye

Mekbib

et al. 2021

Heliyon

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A terminal dry spell is one of the main limiting factors for rice productions. Therefore, this study was conducted to assess the effect of supplemental irrigation for managing the impact of terminal dry spells on the productivity of different rice varieties grown under rainfed conditions in the Fogera Plain. The experiment was designed in a split-plot design with water regimes as main plot factors and rice varieties as a subplot factor with three replications. The water regimes were: dry planted rainfed rice (farmers practice) (FP), transplanted but not irrigated (IWOI), transplanted and irrigated to saturation (SAT), transplanted and ponding to 1 cm water (PD1), and transplanted and ponding to 3 cm water (PD2). The rice varieties were: X-Jigna (V1), Edget (V2), Hiber (V3), Fogera-1 (V4), and Nerica-4 (V5). The combined effect of PD2 with V1 had the highest grain yield (t/ha) (4.35 t/ha) while FP with V3 had the lowest grain yield (2.12 t/ha). The highest (205%) relative grain yield was obtained when V1 was grown under PD2 followed by V4 under PD2 (199%) and V5 under PD2 (192%) compared to FP with V3. Irrigation water productivity (WP IR ) varied between water regimes x varieties from as low as 1.84kg grain mm −1 ha −1 for V3 in FP to as high as the yield of 3.07kg grain mm −1 ha −1 for V1 in PD2. The highest and lowest net benefits were recorded for V1 grown under PD2 (65, 550 ETB) and for V3 grown under TWOI (33, 500 ETB ha −1 ), respectively. Hence, the combined application of 3 cm ponding depth (PD2) with X-Jigna (V1) and 1cm ponding depth with Fogera-1 (V4) rice varieties could be suggested as effective terminal stress management to increase the yield and profitability of rainfed rice in the Fogera Plain and similar agro-ecologies.

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Section: Resultssupporting

confidence: 88%

Supplementary irrigation for managing the impact of terminal dry spells on the productivity of rainfed rice (Oryza sativa L.) in Fogera Plain, Ethiopia

Molla

Tesfaye

Mekbib

et al. 2021

Heliyon

View full text Add to dashboard Cite

show abstract

“…To conclude from both these fields and the previous biotron (Mukamuhirwa et al, ) studies, severe drought conditions during early plant development impacted panicle development, thus affecting grain yield, whereas drought at the reproductive stage results in a stronger impact on spikelet fertility. Also, previous research has shown impact of drought on spikelet sterility, thereby affecting grain yield (Fofana et al, ; Moonmoon & Islam, ). The results of the present study indicate spikelet fertility and weight of 100 grains as important grain yield components having an impact on total grain yield.…”

Section: Discussionmentioning

confidence: 96%

Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

Mukamuhirwa

Hovmalm

Ortíz

et al. 2019

J Agronomy Crop Science

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The climate change will contribute drought and temperature extremes to rice growing systems, especially when cultivated in equatorial regions. To evaluate opportunities to cultivate and breed drought‐tolerant rice, seven rice cultivars were evaluated in Rwanda for recurring morphological drought scores, grain yield and components, and quality characteristics. The cultivation conditions, that is site and drought treatment, impacted morphological drought scores, growth and yield attributes, while cultivar affected quality attributes. Thus, site showed a higher impact on grain yield and components than drought and cultivar, with generally a reduced grain yield at the low‐temperature site, as a result of low spikelet fertility. Morphological drought scores were generally increased by drought, while drought at the reproductive stage at the high‐temperature site was negative for yield and its components. The cultivars “Intsindagirabigega” and “Jyambere” were adapted to high‐temperature site conditions. The cultivar “Intsindagirabigega” had the highest amylose content, and “Mpembuke,” the highest antioxidant capacity. Thus, climate change with increased temperature and drought extremes may increase rice productivity in cool areas, while especially drought at reproductive stage will be detrimental in low altitude areas with high temperature. Cultivar variation indicated opportunities for selection and breeding of climate change tolerant rice cultivars which should be of immediate priority.

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“…The most critical component which determines viability of rice reproductive organs is associated with supply of assimilates. Yield reduction in plants exposed to drought stress was due to limited supply of assimilating produced via photosynthesis (Moonmoon and Islam 2017). Photosynthetic activity declined during several days of drought stress, while assimilates were continuously demanded respiration.…”

Section: Drought Effects At Vegetative and Reproductive Stagementioning

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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Effect of Drought Stress at Different Growth Stages on Yield and Yield Components of Six Rice (Oryza sativa L.) Genotypes

Cited by 35 publications

References 8 publications

Supplementary irrigation for managing the impact of terminal dry spells on the productivity of rainfed rice (Oryza sativa L.) in Fogera Plain, Ethiopia

Supplementary irrigation for managing the impact of terminal dry spells on the productivity of rainfed rice (Oryza sativa L.) in Fogera Plain, Ethiopia

Effect of intermittent drought on grain yield and quality of rice (Oryza sativa L.) grown in Rwanda

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

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