短季棉主要性状遗传分析与改良

通过５个杂交组合后群体表现，分析了不同遗传背景下早熟性，丰产性，纤维生状的基因效应，结果表明，不同遗传背景下加性效应是最基本的。霜前皮棉产量，皮棉总产量的杂种优势主要是由显性或上位性效应引起的。纤维品质性状多受加性效应控制。纤维长度、单纤维强力性状除加性效应外，还受显性和上位性效应影响。在早熟丰产优质诸性状的同步改良中，宜选择霜前皮棉产量高，品质较好的品种为基础亲本，另一亲本应具备单纤维强力突出，

Heredity Analysis and Improvement of Main Characters in Short Season Cotton

Through the colony expression of the 5 hybrid combination progeny, the gene effect of early-maturing, high yield and fibre quality property was analysed under different heredity background. The results showed that the adding effect was most basic. Before frost season, the hybrid superiority of lint output, lint gross output is mainly introduced by the effect of dominance or having control . The fibre quality property, in most cases controlled by adding effect. Fibre length, single fibre strong property apart from adding effect, also is influenced by dominance or having control. Because of different heredity back ground, the frequency of the hybrid progeny appearing fine recomposing individual is different. In the improvements of early-maturing, high yield and top quality properties, the varieties with high yield and before frost season could be selected. Another possesses the characters of single fibre strong force outstanding but not too late-matureing.