Genotype to Phenotype
Adaptation
of sorghum: characterisation of genotypic flowering responses to
temperature and photoperiod
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Background
Sorghum (Sorghum bicolor) is an important
grain and fodder crop grown throughout the world, from tropical to
temperate latitudes and from warm, semi-arid to cool mid-altitude and
temperate environments. Adaptation to environment is determined largely by
duration from sowing to flowering, which is modulated primarily by
temperature and photoperiod. Many
landraces, which should represent the optimum adaptation strategy at a
particular location, are found within these diverse environments. |
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Activities at PEL
A set of approximately 120 germplasm lines from 25 sorghum 'mega
environments' were assembled. A subset comprising one accession per mega
environment were analysed in detail in field experiments in India, Kenya
and Mali, and 10 of these accessions in controlled environments in the UK.
Full details are given in the publications below. In addition, all the
primary data used in the TAG paper is available in an EXCEL file from p.q.craufurd@reading.ac.uk.
Collaborators
International
Crops Research Institute for the Semi-Arid Tropics (ICRISAT)Patancheru, India |
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CRAUFURD,P.Q., V. Mahalakshmi, F.R. Bidinger, S.Z. Mukuru, J. Chantereau,
P.A. Omanga, A.Qi, E.H. Roberts, R.H. Ellis & R.J. Summerfield (1999).
Adaptation of sorghum: characterisation of genotypic flowering responses
to temperature and photoperiod. Theoretical and Applied Genetics 99:
900-911.
P.Q. Craufurd, A. Qi, R.H. Ellis, R.J. Summerfield, E.H.
Roberts & V. Mahalakshmi (1998). Effect of temperature on time to
panicle initiation and leaf appearance in sorghum. Crop Science 38:
942-947. |
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