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Inheritance of tillering and flowering-time in early maturing maize

, : Inheritance of tillering and flowering-time in early maturing maize. Euphytica 30(2): 327-334

A diallel cross and F2 populations derived from 8 early maturing maize inbreds were used to investigate the inheritance of tillering and flowering-time (anthesis), and the possible relationship between tillering and flowering-time. Incomplete dominance for increased tillering was observed; potence ratios, representing the overall degree of dominance, ranged 0.26-0.52. Dominance for early flowering ranged from incomplete with a potence ratio of 0.55 to overdominance with a potence ratio of 1.40. Broad sense heritabilities were low for both characters. The genetic component of variation for tillering was due to general combining ability effects; specific combining ability effects were not significant. A significant negative linear relationship between tillering and flowering-time was found. Lack of independent assortment of tillering and flowering-time in F2 populations indicated that the 2 characters are genetically related.


DOI: 10.1007/bf00033994

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