Breeding for drought tolerance: Direct selection for yield, response to selection and use of drought-tolerant donors in upland and lowland-adapted populations

Kumar, Arvind; Bernier, Jérôme; Verulkar, Satish; Lafïtte, H.R.; Atlin, G. N.

doi:10.1016/j.fcr.2008.02.007

Cited by 296 publications

(222 citation statements)

References 14 publications

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“…leaf rolling, leaf chlorosis and green leaf area have been well established (Cabuslay et al, 2002;Bernier et al, 2008). Moreover, yield traits, such as grain yield, productivity and grain sterility are the most popular parameters used to identify water deficit tolerance in rice breeding programs (Fukai et al, 1999;Yang et al, 2001;Pantuwan et al, 2002;Kumar et al, 2008;Venuprasad et al, 2008;Wang et al, 2010). Multivariate indices including yield failure, RWC and WUE abilities, proline accumulation, P n reduction, F v /F m diminution, and pigment degradation data have been employed to classify members of water deficit tolerance, NSG19 and DD14.…”

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%

“…Rice crop (Oryza sativa L.) improvement including conventional breeding program (Jongdee et al, 2006;Venuprasad et al, 2007;Kumar et al, 2008;Ndijiondjop et al, 2010;Guan et al, 2010) and mutant lines (Koh et al, 2007;Jiang et al, 2007;Cairns et al, 2009;Thang et al, 2010) is one of the strategies for water-deficit tolerant trait. Chemical and irradiation techniques are conventionally approached to induce mutation in a large population of mutant lines and pyramiding drought tolerant trait (Cairns et al, 2009;Thang et al, 2010).…”

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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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Water-deficit tolerant classification in mutant lines of indica rice

Cha–um

Yooyongwech

Supaibulwatana

2012

Sci. agric. (Piracicaba, Braz.)

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“…Leaves fully cupped (U-shaped) 7 Leaves margins touching (O-shaped) 9 Leaves tightly rolled 2.4 Evaluation genetic diversity using SSR markers DNA extraction was prepared according to a method described by McCouch et al [14]. A piece of young rice leaf (2 cm) was collected and placed in a 1.5 ml centrifuge tube sitting on ice.…”

Section: Agro-morphological Character Evaluationmentioning

confidence: 99%

“…Recent studies at the IRRI (International Rice Research Institute) found that there is moderate to high heritability of grain yield under drought stress [4,6,7]. Basically, the main objectives of a breeding program for drought tolerant rice are to determine standard tolerant varieties, to identify important traits, and to evaluate the tolerant levels at seedling and reproductive stages.…”

Section: Introductionmentioning

confidence: 99%

Correlation among Agro-Morphological Variation and Genetic Diversity of Rice (<i>Oryza sativa </i>L.) under Drought Stress

Khang

Tuyen

et al. 2016

ILNS

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Abstract. In this study, the correlation coefficients among agro-morphological variation, genetic diversity, and drought tolerance in 44 rice cultivars were analyzed. The drought tolerance at seeding stage (DTS) was significantly proportional to drought tolerance at vegetative stage (DTV) (r = 0.60). In addition, DTS and DTV had strong significant positive correlation to leaf roll (r = 0.87 and 0.54, respectively). Means of unfilled grains and tilling per panicle were proportionally correlated to DTS (r = 0.22 and 0.25, respectively), and DTV (r = 0.20 and 0.36, respectively). However, weight of 1000 grains and filled grains were recorded no correlation to DTS and DTV. At a homologous coefficient of 16.85 integrated from cluster analysis of agro-morphological, quantitative characteristics and drought tolerant scores, the rice cultivars were divided into five groups. Maximum polymorphic information content (PIC) values were detected in three markers including RM11125, RM21, and RM5629, which were from 0.78 to 0.79. Cluster analysis of microsatellite markers revealed that by a genetic distance of 0.63, the rice varieties were separated into three clusters. The results provide valuable information for rice breeders to select donors in breeding rice integrated with drought tolerance and good agronomic characteristics.

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