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Apex and ear development in relation to the number of grains on the main-stem ears in spring barley (Hordeum distichon)

Published online by Cambridge University Press:  27 March 2009

M. B.Garcia del Moral ,
M.P.Jimenez Tejada ,
L. F.Garcia del Moral ,
J. M. Ramos ,
F. Roca de Togores  and
J. L. Molina-Cano
M. B.Garcia del Moral
Affiliation:
Departamento de Biologia Vegetal, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
M.P.Jimenez Tejada
Affiliation:
Departamento de Biologia Vegetal, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
L. F.Garcia del Moral
Affiliation:
Departamento de Biologia Vegetal, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
J. M. Ramos
Affiliation:
Departamento de Biologia Vegetal, Facultad de Ciencias, Universidad de Granada, 18071-Granada, Spain
F. Roca de Togores
Affiliation:
Departamento de Mejora de Cebadas, La Cruz del Campo S.A. Avda Andalucia 1, 41007-Sevilla, Spain
J. L. Molina-Cano
Affiliation:
Universitai Politecnica de Catahmya-Institut de Reserca i Tecnologia Agroalimentaries, Alcalde Rovira Rome 177, 25006-Lleida, Spain
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Summary

Apex and ear development in nine spring barley genotypes were studied at two sites in southern Spain in 1988. The genotypes were grouped into medium and early types, depending on the time from sowing to anthesis. Medium genotypes had significantly more spikelet primordia than early ones at both sites. Spikelet mortality was similar between genotypes and sites, resulting in a higher final number of grains/ear in the medium than the early genotypes.

There was a positive correlation between the maximum number of spikelet primordia and the duration of three stages of apical development: lemma-, stamen- and awn-primordia. Negative correlations were observed between spikelet mortality and the duration of certain developmental phases of the ear.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 117 , Issue 1 , August 1991 , pp. 39 - 45
Copyright
Copyright © Cambridge University Press 1991

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