GRAIN YIELD, GRAIN NITROGEN CONCENTRATION AND SOME ASSOCIATED PHYSIOLOGICAL ATTRIBUTES OF A SEMIDWARF AND TALL ARGENTINIAN WHEAT CULTIVARS

We studied the effects of the semidwarfing genes on accumulation and distribution of dry matter and nitrogen through a tall and semidwarf Argentinian cultivars. In two field experiments the semidwarf cultivar showed a greater grain yield than the tall one. This was attributed to its higher harvest i...

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Bibliographic Details
Published in:Cereal research communications 1990-01, Vol.18 (4), p.291-297
Main Authors: Feingold, S.E., Calderini, D.F., Slafer, G.A., Andrade, F.H.
Format: Article
Language:English
Subjects:
Breeding
Dry matter accumulation
Flowering
Genotypes
Grains
Human organs
Nitrogen
Plants
Spikelets
Wheat
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Summary:We studied the effects of the semidwarfing genes on accumulation and distribution of dry matter and nitrogen through a tall and semidwarf Argentinian cultivars. In two field experiments the semidwarf cultivar showed a greater grain yield than the tall one. This was attributed to its higher harvest index associated to a higher number of grains per m2. Similarly, Buck Pucara showed both a greater grain nitrogen yield and a higher nitrogen harvest index. There was no difference in grain nitrogen concentration. Most of the main differences between cultivars were defined before the anthesis stage.
ISSN:0133-3720
1788-9170