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ABSTRACT Increased dosage of the group 6 chromosomes of Chinese Spring wheat delays ear-emergence. Reduced dosage of the same chromosomes has the converse effect and accelerates emergence.

Both effects are removed by vernalization. It is proposed that genes on these chromosomes produce a flowering inhibitor, sensitive to vernalization. It is suggested that this inhibitor may

be affected by the major _Vrn_ genes for vernalization requirement on the group 5 chromosomes through their production of a flowering promoter which either suppresses the group 6 genes or

complexes with the inhibitor, thereby accelerating ear-emergence. A gene (or genes) for sensitivity to day-length was detected on the long-arm of chromosome 6B which, in its absence, delayed

ear-emergence under short days. The genes for inhibition of emergence were also probably located on the long-arms of the group 6 chromosomes, but were separate from the gene(s) for

day-length sensitivity. SIMILAR CONTENT BEING VIEWED BY OTHERS INTERACTIONS BETWEEN TWO QTLS FOR TIME TO ANTHESIS ON SPIKE DEVELOPMENT AND FERTILITY IN WHEAT Article Open access 28 January

2021 THE CONTRIBUTION OF PHOTOSYNTHESIS TRAITS AND PLANT HEIGHT COMPONENTS TO PLANT HEIGHT IN WHEAT AT THE INDIVIDUAL QUANTITATIVE TRAIT LOCUS LEVEL Article Open access 23 July 2020 QTL

MAPPING AND CANDIDATE GENE ANALYSIS OF SEED VIGOR-RELATED TRAITS DURING ARTIFICIAL AGING IN WHEAT (_TRITICUM AESTIVUM_) Article Open access 16 December 2020 ARTICLE PDF REFERENCES *

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Download references AUTHOR INFORMATION Author notes * M N Islam-Faridi Present address: Department of Soil & Crop Science, Texas A & M University, College Station, Texas, 77843-2474,

U.S.A. AUTHORS AND AFFILIATIONS * Cereals Research Department, John Innes Centre, Norwich, NR4 7UH, UK M N Islam-Faridi, A J Worland & C N Law Authors * M N Islam-Faridi View author

publications You can also search for this author inPubMed Google Scholar * A J Worland View author publications You can also search for this author inPubMed Google Scholar * C N Law View

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Worland, A. & Law, C. Inhibition of ear-emergence time and sensitivity to day-length determined by the group 6 chromosomes of wheat. _Heredity_ 77, 572–580 (1996).

https://doi.org/10.1038/hdy.1996.184 Download citation * Received: 24 January 1996 * Issue Date: 01 December 1996 * DOI: https://doi.org/10.1038/hdy.1996.184 SHARE THIS ARTICLE Anyone you

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Springer Nature SharedIt content-sharing initiative KEYWORDS * day-length * ear-emergence time * flowering inhibition * group 6 chromosomes * wheat * vernalization