Dynamics of leaf and spikelet primordia initiation in wheat as affected by Ppd-1a alleles under field conditions.

3 ), but in both seasons there was a clear trend to reduce the number of primordia initiated with the increase in the doses of insensitivity alleles ( Fig. 3 ).

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There was a positive trend (significant only to a probability <5%) between duration of time from sowing to double ridge and that to floral initiation, indicating that the advance in development produced during the vegetative phase by the introgression of insensitivity alleles was maintained through the early reproductive phase until the appearance of the double ridge.

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