Yield response of rice (Oryza sativa L.) genotypes to drought under rainfed lowlands

Pantuwan, G.; Fukai, S.; Cooper, Mark; Rajatasereekul, S.; O’Toole, J. C.

doi:10.1016/s0378-4290(01)00195-2

Cited by 148 publications

(102 citation statements)

References 13 publications

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“…Breeding challenges are to create a new plant type (NPTs, Khush and Peng, 1996) and F1 hybrids (Yuan, 1994; that break through the current yield limit of irrigated rice, and superior genotypes that increase yield under resourcepoor and unstable rainfed conditions (Fukai and Cooper, 1995;Pantuwan et al, 2002). Challenges of crop and resource management are the system of rice intensifi cation (SRI, Uphoff and Randriamiharisoa, 2002;Stoop et al, 2002), improved water management via intermittent irrigation (Shi et al, 2002;Belder et al, 2002), aerobic rice culture Lin et al, 2002), and the use of controlled release fertilizers (Shoji and Kanno, 1994).…”

mentioning

confidence: 99%

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

Horie¹,

Shiraiwa²,

Homma³

et al. 2005

Plant Production Science

169

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mentioning

confidence: 99%

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

Horie¹,

Shiraiwa²,

Homma³

et al. 2005

Plant Production Science

169

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“…In addition, the RWC in drought tolerant Ca/H 680 was maintained at higher levels than that in drought sensitive Ca/H 148 when subjected to drought conditions (Parida et al, 2008). However, only RWC in the leaf tissues is inappropriate to make a decision for the drought tolerance in rice cultivar (Pantuwan et al, 2002;Jongdee et al, 2006).…”

Section: Resultsmentioning

confidence: 99%

“…Yield traits are the most important criteria for water-deficit tolerance screening (Fukai et al, 1999;Yang et al, 2001;Pantuwan et al, 2002;Kumar et al, 2008). Some previous studies suggested that multivariate cluster analysis is practically required for water-deficit classification in rice breeding programs (Cabuslay et al, 2002;Cha-um et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…In rainfed paddy fields, water shortage has been well known as being a serious issue, especially in the reproductive stage, during which plants are particularly sensitive, leading to low crop yield (Fukai et al, 1999;Pantuwan et al, 2002;Bouman et al, 2006). In the genetic resources, NSG19 is a positive check of water-deficit tolerance, which is utilized in drought tolerance screening, whereas IR20 is a negative check (Mitchell et al, 1998;Wade et al, 1999;Pantuwan et al, 2002;Uyprasert et al, 2004;Kumar et al, 2006). This investigation aimed to classify the water-deficit tolerance in mutant rice genotypes during the reproductive stage.…”

Section: Introductionmentioning

confidence: 99%

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Water-deficit tolerant classification in mutant lines of indica rice

Cha–um

Yooyongwech

Supaibulwatana

2012

Sci. agric. (Piracicaba, Braz.)

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Water shortage is a major abiotic stress for crop production worldwide, limiting the productivity of crop species, especially in dry-land agricultural areas. this investigation aimed to classify the water-deficit tolerance in mutant rice (Oryza sativa L. spp. indica) genotypes during the reproductive stage. Proline content in the flag leaf of mutant lines increased when plants were subjected to water deficit. relative water content (rWC) in the flag leaf of different mutant lines dropped in relation to water deficit stress. A decrease rWC was positively related to chlorophyll a degradation. Chlorophyll a , chlorophyll b , total chlorophyll , total carotenoids , maximum quantum yield of PSII , stomatal conductance , transpiration rate and water use efficiency in mutant lines grown under water deficit conditions declined in comparison to the well-watered, leading to a reduction in net-photosynthetic rate. In addition, when exposed to water deficit, panicle traits, including panicle length and fertile grains were dropped. the biochemical and physiological data were subjected to classify the water deficit tolerance. NSG19 (positive control) and DD14 were identified as water deficit tolerant, and AA11, AA12, AA16, bb13, bb16, CC12, CC15, EE12, FF15, FF17, G11 and Ir20 (negative control) as water deficit sensitive, using Ward's method.

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“…Leaf water potential (LWP) is a measure of whole plant water status and has long been recognized as an indicator of dehydration avoidance (Pantuwan et al, 2002a). When water deficit in leaf goes beyond a certain threshold level, the stomata closes as a mechanism of lowering the rate of transpiration.…”

Section: Physiological Responsesmentioning

confidence: 99%

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.

show abstract

Yield response of rice (Oryza sativa L.) genotypes to drought under rainfed lowlands

Cited by 148 publications

References 13 publications

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

Can Yields of Lowland Rice Resume the Increases that They Showed in the 1980s?

Water-deficit tolerant classification in mutant lines of indica rice

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

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