Aydın ÜNAY, Cahit KONAK, Volkan SEZENER, Nahit ÇAĞIRICI

BUĞDAYDA (Triticum aestivum L. em Thell) BAYRAK YAPRAĞI ÖZELLİKLERİNİN KALITIMI VE VERİM İle İLİŞKİLERİ

Sekiz ekmeklik buğday genotipinin yarım diallel melezlenmesi sonucu oluşturulan populasyonda tek başak verimi ve bayrak yaprağı alam, bayrak yaprağı kın alanı ve başak alam gibi morfofizyolojik özellikler incelenmiştir. Stepwise regresyon analizi, korelasyon katsayıları ve bayrak yaprağı uzaklaştırma sonuçlarına göre bayrak yaprağı boğum aralığı kısa buna karşın geniş bir alana sahip bayrak yapraklı ve başaklı bitkilerin verimli olabileceği saptanmıştır. Bayrak yaprağı alanı için dominant, buna karşın başak alanı için eklemeli gen etkilerinin daha yüksek olduğu bulunmuştur. Erken döl kuşaklarında başak alanı için yapılacak seleksiyonun başarılı olabileceği sonucuna varılmıştır.

Inheritance of Flag Leaf Properties and Its Relationship to Yield in Bread Wheat (Triticum aestivum L. em Thell)

Grain yield per ear and morpho-physiologic flag leaf properties such as flag leaf area, flag leaf sheath area, and spike area were studied in a 8x8 half diallel population in bread wheat. Stewise regression analysis, correlations between characteristics and flag leaf removal indicated that plants with short flag leaf internode, and larger flag area and spike area could be higher yielding. Diallel analysis suggested that dominance gene effects for flag leaf area and additive gene effects for spike area were significant. Finally, selection for spike area at early generation would be recommended in further breeding studies.

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