Identification of quantitative trait loci for seed storability in rice (<i>Oryza sativa</i> L.)

Li, Linfang; Lin, Qinlu; Liu, Shijia; Liu, Xi; Wang, Wenyan; Hang, Ngo Thi; Feng, Liu; Zhao, Zhigang; Jiang, Ling; Wan, Jianmin

doi:10.1111/j.1439-0523.2012.02007.x

Cited by 34 publications

(29 citation statements)

References 17 publications

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“…, Li et al. ). Although these QTL data enhanced our understanding of the genetic basis of seed storability, its molecular mechanism remains unknown and the currently available information has not been applied by breeders.…”

Section: Discussionmentioning

confidence: 99%

“…Natural ageing treatment was performed as described by Li et al. (). ‘Nipponbare’, ‘Kasalath’ and SL36 harvested in Nanjing in 2007, 2011 and in Hainan in 2010, respectively, were stored at room temperature (<30°C) and 40–60% RH in Nanjing for 3 years.…”

Section: Methodsmentioning

confidence: 99%

“…, Li et al. ). Among them, a QTL on chromosome 9 was detected in numerous studies across different genetic backgrounds (Miura et al.…”

mentioning

confidence: 99%

“…Recently, Li et al. () identified six QTLs affecting seed storability on chromosomes 2, 3, 4, 6, 9 and 11 in 182 backcross inbred lines (BILs) derived from ‘Koshihikari’ / ‘Kasalath’ // ‘Koshihikari’ after natural ageing for 32 and 48 months, respectively. qSS‐9 , located between R10783S and R1751, was the most stable one and was detected in seeds from all environments and storage times, explaining 10.63–33.10% of the phenotypic variation.…”

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confidence: 99%

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Fine mapping of qSS‐9, a major and stable quantitative trait locus, for seed storability in rice (Oryza sativa L.)

et al. 2015

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Seed storability in rice (Oryza sativa L.) is an important agronomic trait. We previously showed a quantitative trait locus of seed storability, qSS‐9, on chromosome 9 in a backcross population of ‘Koshihikari’ (japonica) / ‘Kasalath’ (indica) // ‘Koshihikari’. In this study, fine mapping of the chromosomal location of qSS‐9 was performed. Effect of ‘Kasalath’ allele of qSS‐9 was validated using a chromosome segment substitution line, SL36, which harboured the target quantitative trait loci (QTL) from ‘Kasalath’ in the genetic background of ‘Nipponbare’ under different ageing treatments in different environments. Subsequently, an F2 population from a cross between ‘Nipponbare’ and SL36 was used for fine mapping of qSS‐9. Simultaneously, four subnear isogenic lines (sub‐NILs) that represented different recombination breakpoints across the qSS‐9 region were developed from F3 progeny. Finally, the qSS‐9 locus was located between the Indel markers Y10 and Y13, which delimit a region of 147 kb in the ‘Nipponbare’ genome. These results provide a springboard for map‐based cloning of qSS‐9 and possibilities for breeding rice varieties with strong seed storability.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…, Li et al. ). Among them, a QTL on chromosome 9 was detected in numerous studies across different genetic backgrounds (Miura et al.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Fine mapping of qSS‐9, a major and stable quantitative trait locus, for seed storability in rice (Oryza sativa L.)

et al. 2015

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“…Li et al. () used a BIL population derived from the backcross Koshihikari/Kasalath//Koshihikari to map six QTLs. Xue et al.…”

Section: Introductionmentioning

confidence: 99%

Detection and validation of QTLs associated with seed longevity in rice (Oryza sativa L.)

Liu

Pan

et al. 2018

Plant Breeding

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Seed longevity in rice is a major determinant in seed production and germplasm preservation. In this paper, a recombinant inbred line (RIL) population consisting of 172 lines derived from the cross between Xiang743 and ‘Katy’ was used to map quantitative trait loci (QTLs) for seed longevity (SL) after seed storage for 18 and 30 months under ambient conditions. Two putative QTLs, qSL‐2 and qSL‐8, were detected and located on chromosomes 2 and 8, respectively. qSL‐2 is an allele from Xiang743 allele and increases seed longevity. qSL‐8 was a novel QTL from ‘Katy’ allele and increases seed longevity. qSL‐8 explained 15.29% and 17.35% of the phenotypic variance after seed storage for 18 and 30 months, respectively. Furthermore, qSL‐8 was validated in a secondary population developed by self‐pollination of a residual heterozygous line (RHL) selected from the RIL population, which explained 25.93% of the phenotypic contribution. These results provide an opportunity for map‐based cloning of qSL‐8. Furthermore, qSL‐8 may be a target for improving seed longevity by marker‐assisted selection (MAS) in rice.

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Crop Establishment in Direct-Seeded Rice: Traits, Physiology, and Genetics

et al. 2021

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The changing climate and water availability strongly affect the current state of agricultural production. While the global temperature rises, the occurrence of extreme climatic conditions becomes erratic. This current scenario has driven the development of rice varieties and cultivation practices that require less water and favor mechanization. Although puddled transplanted rice has been more widely used in the past, direct seeding has been gaining popularity in recent years, especially due to its water- and labor-saving features. This technique allows full crop establishment from seeds that were directly sown in the field, thus avoiding puddling, transplanting, and maintaining standing water. Consequently, it offers promising positive environmental effects including decreasing the release of greenhouse gases and increasing water-use efficiency. Historically, rice varieties bred for transplanting are also used in direct seeding, which limits the maximum yield potential of field trials. The success of direct seeding relies strongly on the development of rice varieties with robust crop establishment. Anaerobic germination, seed longevity, and early seedling vigor are the key traits required to achieve this. This chapter expounds on the physiology, molecular mechanisms, genetics, and relevance of the enumerated traits for direct seeding. A brief discussion of breeding for rice varieties with improved germination under direct seeding is also provided.

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Identification of quantitative trait loci for seed storability in rice (Oryza sativa L.)

Cited by 34 publications

References 17 publications

Fine mapping of qSS‐9, a major and stable quantitative trait locus, for seed storability in rice (Oryza sativa L.)

Fine mapping of qSS‐9, a major and stable quantitative trait locus, for seed storability in rice (Oryza sativa L.)

Detection and validation of QTLs associated with seed longevity in rice (Oryza sativa L.)

Crop Establishment in Direct-Seeded Rice: Traits, Physiology, and Genetics

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