MORPHOLOGICAL AND MEIOTIC CHARACTERISTICS OF THE EXTRACTED AABB TETRAPLOID COMPONENT OF THREE VARIETIES OF COMMON WHEAT

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Abstract
The extracted AABB component of three varieties of common wheat (Triticum aestivum L. em. Thell.) did not resemble presently grown varieties of durum wheat (T. turdigum var. durum). Relative to their corresponding hexaploid, the extracted AABB tetraploids exhibited reduced vigour, finer leaves, smaller and denser spikes, almost identical seed color, shorter stature, delayed maturity, and, with one exception, produced fewer tillers per plant. The three extracted tetraploids exhibited normal meiotic behaviour and pollen fertility.

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