Identification of quantitative trait loci for plant growth of rice in paddy field flooded with salt water

Takehisa, Hinako; Shimodate, Toshinori; Fukuta, Yoshimichi; Ueda, Taro; Yano, Masahiro; Yamaya, Tomoyuki; Kameya, Toshiaki; Satô, Tadashi

doi:10.1016/j.fcr.2004.01.026

Cited by 119 publications

(76 citation statements)

References 29 publications

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“…In this cultivar, a major QTL (Saltol) was identified which is located on chromosome 1 and involved in salt tolerance at the vegetative stage [95]. This QTL caused 64-80% of the phenotypic variation under saline conditions which has also been confirmed in other varieties of rice such as Nona Bokra [85,88,96]. Another rice variety FL478 (IR 66946-3R-178-1-1, derived from crossing between Pokkali and IR 29), has been promoted as an improved donor for breeding programs, as it has a high level of seedling stage salinity tolerance and is photoperiod insensitive, shorter and flowers earlier than the original Pokkali.…”

Section: Conventional Breedingmentioning

confidence: 86%

Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities

et al. 2016

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Rice (Oryza sativa L.) is an important staple crop that feeds more than one half of the world's population and is the model system for monocotyledonous plants. However, rice is very sensitive to salinity and is the most salt sensitive cereal crop with a threshold of 3 dSm −1 for most cultivated varieties. Despite many attempts using different strategies to improve salinity tolerance in rice, the achievements so far are quite modest. This review aims to discuss challenges that hinder the improvement of salinity stress tolerance in rice as well as potential opportunities for enhancing salinity stress tolerance in this important crop.

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Section: Conventional Breedingmentioning

confidence: 86%

Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities

et al. 2016

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“…This QTL confers salinity tolerance at the vegetative stage and explains 64 to 80% of the phenotypic variance (Bonilla et al, 2002); it has also been detected in other varieties (Takehisa et al, 2004). A gene for salt tolerance at the vegetative stage has been identified in a similar position in the cultivar Nona Bokra and positionally cloned (Ren et al, 2005).…”

Section:  Non-conventional Approachesmentioning

confidence: 89%

Genetic Improvement of Rice (Oryza sativa) For Salt Tolerance: A Review

2017

International Journal of Advanced Research in Botany

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“…However, mineral deficiencies, submergence, water depth and drought, in addition to salt stress, compound problems of salinity in paddy fields (Gregorio et al 2002). In an earlier study, we identified 3 QTLs that control vegetative growth in saline paddy fields in all four cropping seasons: 1 QTL influenced shoot length, while 2 QTLs controlled tiller number (Takehisa et al 2004).…”

Section: Introductionmentioning

confidence: 95%

Epistatic Interaction of QTLs Controlling Leaf Bronzing in Rice (Oryza sativa L.) Grown in a Saline Paddy Field

et al. 2006

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We analyzed quantitative trait loci (QTLs) in rice (Oryza sativa L.) for leaf bronzing induced by growing plants in a saline paddy field. The mapping population comprised 98 backcross-inbred lines (BILs) derived from crosses between Nipponbare, the recurrent parent, and Kasalath varieties. Fifteen of the BILs showed obvious leaf bronzing, unlike the parent varieties. We identified two QTLs for leaf bronzing: one (qLb-3) was located close to the R1925 marker on the long-arm of chromosome 3, the other (qLb-11) lay in the interval between the C1350 and C477 markers on the short-arm of chromosome 11. The Kasalath allele of qLb-3 and the Nipponbare allele of qLb-11 were found to promote leaf bronzing. Moreover, it was observed that the two QTLs were epistatic, the Kasalath qLb-3 allele causing obvious leaf bronzing in the presence of the Nipponbare qLb-11 allele. To confirm this interaction, we investigated leaf bronzing in three chromosome segment substitution lines: two of these lines, SL2 and SL61, carried an introgressed Kasalath qLb-3 allele in a Nipponbare background while the third line, SL47, carried introgressed Kasalath alleles of both qLb-3 and qLb-11. Leaf bronzing occurred in the SL2 and SL61 plants, but not in the SL47 plants. We further investigated the interaction between the two QTLs using F 2 plants derived from crosses between the SL47 and SL61. In the F 2 plants, segregants harboring both the Kasalath qLb-3 allele and the Nipponbare qLb-11 allele showed leaf bronzing. These results indicate that leaf bronzing required the epistatic interaction of the Kasalath qLb-3 allele on chromosome 3 and the Nipponbare qLb-11 allele on chromosome 11.

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Identification of quantitative trait loci for plant growth of rice in paddy field flooded with salt water

Cited by 119 publications

References 29 publications

Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities

Improvement of Salinity Stress Tolerance in Rice: Challenges and Opportunities

Genetic Improvement of Rice (Oryza sativa) For Salt Tolerance: A Review

Epistatic Interaction of QTLs Controlling Leaf Bronzing in Rice (Oryza sativa L.) Grown in a Saline Paddy Field

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