Development of Drought Resistance in Rice

Kumar, R. Vinay

doi:10.20546/ijcmas.2018.705.171

Cited by 4 publications

(3 citation statements)

References 94 publications

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“…In the rainfed ecosystem, drought can be categorized into three types; i) early drought stress that ensues during the vegetative growth stage, which is the initial germinating stage, ii) an intermittent drought that occurs at the developmental stage such as the flowering stage, and iii) terminal drought stress that arises before the end of the planting season (Fisher & Fukai, 2003;Kanwal et al, 2022). Just recently, a new classification method was released by the International Rice Research Institute (IRRI) to which there are four major classes of droughtprone rainfed environments; i) drought stress at the beginning of the new cropping season in lowland areas (non-flooded soils and root zones below saturation for at least ten consecutive days before flowering, ii) drought stress at the flowering stage in lowland (non-flooded soils and root zone below saturation for at least seven days around anthesis), iii) drought stress at the end of the cropping season in lowland (non-flooded soils and root zone below saturation for at least ten consecutive days after flowering, and iv) drought stress at the flowering stage in the upland field (without rainfall or irrigation for at least seven days around anthesis and groundwater table below 100cm) (Kumar, 2018).…”

Section: Types Of Droughtmentioning

confidence: 99%

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Oyebamiji

Shamsudin²,

Ikmal³

et al. 2022

Egypt. J. Agron.

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Egyptian Journal of Agronomy http://agro.journals.ekb.eg/ Review 9 R ICE (Oryza sativa L.) is considered the major source of calories for more than half of the world's population. However, this Asian staple crop is susceptible to abiotic stress, including drought, throughout its life cycle. The main theme covered in this review includes types of drought and its effects on rice morphological, physiological, biochemical, and agronomical levels and their adaptive mechanisms under drought. Drought in the rainfed ecosystem during critical stages (germination and reproductive stages) has seriously undermined rice production, posing a danger to global food supply and sustainable food production worldwide. It caused a reduction in the germination rate, CO 2 assimilation rate, photosynthesis activities, gas exchange via the leaf, plant height, number of panicles, seed weight, biomass, harvest index, and yield. Delayed seed germination, flowering, and maturity of the rice plant are also associated with water stress. Under mild or adverse drought conditions, plants exhibit certain adaptive changes or tolerance mechanisms, including activating antioxidant systems and the production of osmolytes such as proline and polyamine, subsequently enhancing drought tolerance. The role of phytohormones in alleviating stress has been recognized and highlighted in this review. Furthermore, the plant root system also plays a significant role in drought. The information provided in this review will help researchers to have comprehensive knowledge and understanding of the changes and disruptions that occur in rice during water stress and its tolerance mechanisms, subsequently facilitating the selection and development of droughttolerant rice.

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Section: Types Of Droughtmentioning

confidence: 99%

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Oyebamiji

Shamsudin²,

Ikmal³

et al. 2022

Egypt. J. Agron.

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“…Abiotic stresses such as drought are detrimental to the growth, development, productivity, and grain quality in rice ( Kumar et al, 2012 ; Raman et al, 2012 ), because more than 80% of its growth period is water-dependent. This renders drought as an extremely hazardous abiotic stress affecting rice production globally ( Kumar, 2018 ). The threat due to drought becomes more pertinent in the wake of global climate change, owing to its frequent occurrence around the globe.…”

Section: Introductionmentioning

confidence: 99%

Drought Tolerant Near Isogenic Lines of Pusa 44 Pyramided With qDTY2.1 and qDTY3.1, Show Accelerated Recovery Response in a High Throughput Phenomics Based Phenotyping

et al. 2022

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Reproductive stage drought stress (RSDS) is a major challenge in rice production worldwide. Cultivar development with drought tolerance has been slow due to the lack of precise high throughput phenotyping tools to quantify drought stress-induced effects. Most of the available techniques are based on destructive sampling and do not assess the progress of the plant’s response to drought. In this study, we have used state-of-the-art image-based phenotyping in a phenomics platform that offers a controlled environment, non-invasive phenotyping, high accuracy, speed, and continuity. In rice, several quantitative trait loci (QTLs) which govern grain yield under drought determine RSDS tolerance. Among these, qDTY2.1 and qDTY3.1 were used for marker-assisted breeding. A set of 35 near-isogenic lines (NILs), introgressed with these QTLs in the popular variety, Pusa 44 were used to assess the efficiency of image-based phenotyping for RSDS tolerance. NILs offered the most reliable contrast since they differed from Pusa 44 only for the QTLs. Four traits, namely, the projected shoot area (PSA), water use (WU), transpiration rate (TR), and red-green-blue (RGB) and near-infrared (NIR) values were used. Differential temporal responses could be seen under drought, but not under unstressed conditions. NILs showed significant level of RSDS tolerance as compared to Pusa 44. Among the traits, PSA showed strong association with yield (80%) as well as with two drought tolerances indices, stress susceptibility index (SSI) and tolerance index (TOL), establishing its ability in identifying the best drought tolerant NILs. The results revealed that the introgression of QTLs helped minimize the mean WU per unit of biomass per day, suggesting the potential role of these QTLs in improving WU-efficiency (WUE). We identified 11 NILs based on phenomics traits as well as performance under imposed drought in the field. The study emphasizes the use of phenomics traits as selection criteria for RSDS tolerance at an early stage, and is the first report of using phenomics parameters in RSDS selection in rice.

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“…According to Babu et al, (2003), Lanceras et al, (2004), and Gomez et al, (2006) there were several considerations in identifying suitable donors for development of drought tolerant rice variety i.e., (i) selection of donors based on secondary traits that contribute to drought tolerant. There were many reported studies on usage of secondary traits for improving yield production under water limiting conditions, such as in maize (Ribaut et al, 2004), wheat (Condon et al, 2004) and sorghum (Sanchez 2002).Moreover, other secondary traits namely root architecture, relative water content, leaf water potential, canopy temperature, panicle exertion, leaf death and rolling had been used in identifying drought tolerant rice (Kumar 2018). As stated by Gomez et al, (2006), the ideal secondary traits were easier to measure, genetically correlated with grain yield under stress, highly heritable and showed high genetic variation in the targeted species.…”

Section: Introductionmentioning

confidence: 99%

Identification of Drought Tolerant among MARDI Rice Varieties based on Morpho-Agronomic Traits and Drought Grain Yield QTLs

Razak¹,

Othman²,

Rahim³

2021

Int.J.Curr.Microbiol.App.Sci

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Development of Drought Resistance in Rice

Cited by 4 publications

References 94 publications

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Drought Impacts and the Tolerance Mechanisms in Rice (Oryza sativa L.): A Review

Drought Tolerant Near Isogenic Lines of Pusa 44 Pyramided With qDTY2.1 and qDTY3.1, Show Accelerated Recovery Response in a High Throughput Phenomics Based Phenotyping

Identification of Drought Tolerant among MARDI Rice Varieties based on Morpho-Agronomic Traits and Drought Grain Yield QTLs

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