Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage

E.P. Wilhelm, M.I. Boulton, T.E.S. Barber, A.J. Greenland, W. Powell

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4 Citations (Scopus)

Abstract

In wheat, semidwarfism resulting from reduced height (Rht)‐B1b and Rht‐D1b was integral to the ‘green revolution’. The principal donors of these alleles are ‘Norin 10’, ‘Seu Seun 27’ and ‘Suwon 92’ that, according to historical records, inherited semidwarfism from the Japanese landrace ‘Daruma’. The objective of this study was to examine the origins of Rht‐B1b and Rht‐D1b by growing multiple seed bank sources of cultivars comprising the historical pedigrees of the principal donor lines and scoring Rht‐1 genotype and plant height. This revealed that ‘Norin 10’ and ‘Suwon 92’ sources contained Rht‐B1b and Rht‐D1b, but the ‘Seu Seun 27’ source did not contain a semidwarf allele. Neither Rht‐B1b nor Rht‐D1b could be definitively traced back to ‘Daruma’, and both ‘Daruma’ sources contained only Rht‐B1b. However, ‘Daruma’ remains the most likely donor of Rht‐B1b and Rht‐D1b. We suggest that the disparity between historical pedigrees and Rht‐1 genotypes occurs because the genetic make‐up of seed bank sources differs from that of the cultivars actually used in the pedigrees. Some evidence also suggests that an alternative Rht‐D1b donor may exist.
Original languageEnglish
Pages (from-to)539-545
Number of pages7
JournalPlant Breeding
Volume132
Issue number6
DOIs
Publication statusPrint publication - 2013
Externally publishedYes

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Pedigree
pedigree
Triticum
Genotype
wheat
genotype
Alleles
alleles
cultivars
landraces
Seed Bank

Bibliographical note

Cited By :4

Export Date: 31 March 2019

Cite this

Wilhelm, E. P., Boulton, M. I., Barber, T. E. S., Greenland, A. J., & Powell, W. (2013). Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage. Plant Breeding, 132(6), 539-545. https://doi.org/10.1111/pbr.12099
Wilhelm, E.P. ; Boulton, M.I. ; Barber, T.E.S. ; Greenland, A.J. ; Powell, W. / Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage. In: Plant Breeding. 2013 ; Vol. 132, No. 6. pp. 539-545.
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Wilhelm, EP, Boulton, MI, Barber, TES, Greenland, AJ & Powell, W 2013, 'Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage', Plant Breeding, vol. 132, no. 6, pp. 539-545. https://doi.org/10.1111/pbr.12099

Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage. / Wilhelm, E.P.; Boulton, M.I.; Barber, T.E.S.; Greenland, A.J.; Powell, W.

In: Plant Breeding, Vol. 132, No. 6, 2013, p. 539-545.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Genotype analysis of the wheat semidwarf Rht-B1b and Rht-D1b ancestral lineage

AU - Wilhelm, E.P.

AU - Boulton, M.I.

AU - Barber, T.E.S.

AU - Greenland, A.J.

AU - Powell, W.

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N2 - In wheat, semidwarfism resulting from reduced height (Rht)‐B1b and Rht‐D1b was integral to the ‘green revolution’. The principal donors of these alleles are ‘Norin 10’, ‘Seu Seun 27’ and ‘Suwon 92’ that, according to historical records, inherited semidwarfism from the Japanese landrace ‘Daruma’. The objective of this study was to examine the origins of Rht‐B1b and Rht‐D1b by growing multiple seed bank sources of cultivars comprising the historical pedigrees of the principal donor lines and scoring Rht‐1 genotype and plant height. This revealed that ‘Norin 10’ and ‘Suwon 92’ sources contained Rht‐B1b and Rht‐D1b, but the ‘Seu Seun 27’ source did not contain a semidwarf allele. Neither Rht‐B1b nor Rht‐D1b could be definitively traced back to ‘Daruma’, and both ‘Daruma’ sources contained only Rht‐B1b. However, ‘Daruma’ remains the most likely donor of Rht‐B1b and Rht‐D1b. We suggest that the disparity between historical pedigrees and Rht‐1 genotypes occurs because the genetic make‐up of seed bank sources differs from that of the cultivars actually used in the pedigrees. Some evidence also suggests that an alternative Rht‐D1b donor may exist.

AB - In wheat, semidwarfism resulting from reduced height (Rht)‐B1b and Rht‐D1b was integral to the ‘green revolution’. The principal donors of these alleles are ‘Norin 10’, ‘Seu Seun 27’ and ‘Suwon 92’ that, according to historical records, inherited semidwarfism from the Japanese landrace ‘Daruma’. The objective of this study was to examine the origins of Rht‐B1b and Rht‐D1b by growing multiple seed bank sources of cultivars comprising the historical pedigrees of the principal donor lines and scoring Rht‐1 genotype and plant height. This revealed that ‘Norin 10’ and ‘Suwon 92’ sources contained Rht‐B1b and Rht‐D1b, but the ‘Seu Seun 27’ source did not contain a semidwarf allele. Neither Rht‐B1b nor Rht‐D1b could be definitively traced back to ‘Daruma’, and both ‘Daruma’ sources contained only Rht‐B1b. However, ‘Daruma’ remains the most likely donor of Rht‐B1b and Rht‐D1b. We suggest that the disparity between historical pedigrees and Rht‐1 genotypes occurs because the genetic make‐up of seed bank sources differs from that of the cultivars actually used in the pedigrees. Some evidence also suggests that an alternative Rht‐D1b donor may exist.

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JF - Plant Breeding

SN - 0179-9541

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