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Inheritance of siliqua orientation and seed coat colour in Brassica tournefortii

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The inheritance of siliqua orientation and seed coat colour in Brassica tournefortii was investigated using four genotypes varying in these two characters. The F1, F2 and backcross generations of two crosses were used for studying the segregation pattern of the traits. The plants were classified for seed colour as having brown or yellow seeds and for siliqua orientation as having upright, semi-spread or spread siliqua. Seed colour was found to be under monogenic control with brown being dominant over yellow. Siliqua orientation was under digenic polymeric gene action: upright siliqua was produced by the presence of two dominant genes and spread siliqua by two recessive genes. The absence of even a single dominant gene resulted in a third type of siliqua orientation, semi-spread siliqua.
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Keywords: Brassica tournefortii; inheritance; seed colour; siliqua orientation

Document Type: Research Article

Publication date: 01 April 2008

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