Identification of QTLs for Drought-Related Traits in Alien Introgression Lines Derived from Crosses of Rice (Oryza sativa cv. IR64) × O. glaberrima under Lowland Moisture Stress

Bimpong, Isaac Kofi; Serraj, Rachid; Chin, Joong Hyoun; Ramos, Joie; Mendoza, Eduardo; Hernandez, Jose E.; Mendioro, Merlyn S.; Brar, D. S.

doi:10.1007/s12374-011-9161-z

Cited by 45 publications

(42 citation statements)

References 45 publications

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“…Its tolerance to drought is a particularly valuable trait during these periods that are characterized by increased occurrences of drought and erratic rainfall. Some alien introgression lines derived from an interspecific cross between O. sativa and O. glaberrima under drought conditions had higher yield than the parents (Bimpong et al, 2011b). This demonstrates the potential of transferring drought related traits from African rice to Asian rice.…”

Section: Exploitation Of Drought Tolerance Traits In African Rice In mentioning

confidence: 79%

The effects of drought on rice cultivation in sub-Saharan Africa and its mitigation: A review

Noelle¹,

Rodrigue²,

Gnikoua³

2018

Afr. J. Agric. Res.

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Drought is the primary cause of yield loss in agriculture throughout the world, and is currently the most common reason for global food shortages. Three-quarter of the most severe droughts in the last ten years have been in Africa, the continent which already has the lowest level of crop production and drought adaptive capacity. The increased incidences of drought and erratic rainfall have thrown small holder farmers in Africa into deep poverty, hunger and malnutrition. In this paper, the drought situation in sub-Saharan Africa and its impact on rice production was reviewed. Rice is particularly vulnerable to droughts as it has higher water requirement as compared to other crops. The review has also highlighted physiological and molecular plant responses to drought, with special focus on effects of drought stress on rice grain yield and other related-traits. With climate change predicted to exacerbate the problem of water security in Africa, it is imperative that we develop robust, well-planned and informed strategies to mitigate against drought. Various drought mitigation strategies including breeding for drought tolerance and water harvesting and conservation techniques are also outlined. In order to adapt to drought, there is need for a broad based approach that includes development of appropriate policies, putting in place necessary water related investments and institutions as well as capacity building at various levels.

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Section: Exploitation Of Drought Tolerance Traits In African Rice In mentioning

confidence: 79%

The effects of drought on rice cultivation in sub-Saharan Africa and its mitigation: A review

Noelle¹,

Rodrigue²,

Gnikoua³

2018

Afr. J. Agric. Res.

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“…Worldwide, rice is cultivated on an area of 154 million hectors with an annual production of 700 million tonnes (FAO, 2011). Drought is a major abiotic stress that limits rice productivity in rainfed and upland ecosystems (Bimpong et al, 2011) and worldwide, drought affects approximately 27 million ha of rainfed. Drought reduces yield by 15-50 per cent depending on the stress intensity and crop growth period at which the stress occurs in rice (Srividhya et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Recombinant Inbreed Lines (RIL) population of upland rice under stress and non stress conditions for grain yield and drought tolerance

Kumar

Mandal

2018

IJARe

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Drought is the major abiotic factor that limit rice productivity in rainfed and upland occuring ecosystems; worldwide, it reduces yield by 15-50 % depending on the stress impact on crop growth period. Stress period occuring more than 7-14 days drastic reduction is observed in all the parameters i.e. average plant height 12.9-29.5%, panicle number 41.6-65.4%, yield of inbred lines 17.34 -86.04% followed by an average of overall 44.86% over non stress condition. Similarly it was found that biomass, harvest index, filled grain per panicle, total grain per panicle, fertility % and so on were reduced under stress condition in comparison to congenial condition.Variation in drought susceptibility index (DSI) and drought resistant index (DRI) in the inbred lines ranges 1.081 to 2.116 and 0.04 to 2.80 respectively. Significant variations observed in the population for different agronomical traits and derived indices would facilitate selection of recombinant inbred lines (RILs) with drought tolerance and high yielding.

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“…It displays interesting properties for resistance to iron toxicity (Majerus et al, 1999;Dufey et al, 2015) and to submergence (Sakagami et al, 2009). It also possesses promising characters for drought resistance (Bimpong et al, 2011;Bocco et al, 2012;Ndjiondjop et al, 2012;Kijoji et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Screening for salinity tolerance of Oryza glaberrima Steud. seedlings

Prodjinoto¹,

Gandonou²,

Lutts³

2018

Afr. J. Agric. Res.

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Rice (Oryza sativa) is a salt-sensitive species and improvement of salt resistance is a major goal for plant breeders. Some species of Oryza genus may constitute an interesting source of genes involved in stress resistance for cultivated rice improvement. The African rice Oryza glaberrima is poorly described for its response to salt stress. Twenty-five accessions of O. glaberrima were exposed during 2 weeks to 0 or 60 mM NaCl in nutrient solution. Morphological and physiological parameters were recorded and used to perform principal component analysis allowing us to consider three contrasting groups (saltresistant, medium, and salt-sensitive). Most of the tested lines appeared more salt-sensitive than the moderately salt-resistant cultivar I Kong Pao from O. sativa. Salt-sensitivity index was higher for roots than for shoots and O. glaberrima was poorly efficient for regulation of Na + translocation from the root to the shoot. Some accessions such as TOG5307 however were able to maintain a high net photosynthesis under salt conditions and exhibited a high level of tolerance to accumulated Na + ions and a high capacity for osmotic adjustment. It is concluded that these salt-tolerant accessions constitute a promising material for rice improvement through inter-specific crosses with O. sativa.

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Identification of QTLs for Drought-Related Traits in Alien Introgression Lines Derived from Crosses of Rice (Oryza sativa cv. IR64) × O. glaberrima under Lowland Moisture Stress

Cited by 45 publications

References 45 publications

The effects of drought on rice cultivation in sub-Saharan Africa and its mitigation: A review

The effects of drought on rice cultivation in sub-Saharan Africa and its mitigation: A review

Evaluation of Recombinant Inbreed Lines (RIL) population of upland rice under stress and non stress conditions for grain yield and drought tolerance

Screening for salinity tolerance of Oryza glaberrima Steud. seedlings

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