【摘要】 对2005年全国棉花品种A组区试13个品种的7个植株性状、7个产量性状和8个纤维品质性状组进行典型相关分析,结果表明,选择出苗—开花及全生育期短与果枝数适中的性状,有利于提高皮棉产量及霜前皮棉产量。生育期长的性状,则果枝始节高,果枝数多,对纤维长度、整齐度、纺纱均匀性指数产生负效应。结铃性强、株铃多的性状,可同步提高铃重,但会间接导致纤维长度、比强度、整齐度及纺纱均匀性指数的降低,麦克隆值的增加,影响纤维品质。衣分高的性状,可有效地提高皮棉和霜前皮棉产量,降低纤维黄度,但会促使麦克隆值的增大,使纤维变粗。更多还原

【Abstract】 Canonical analysis method was applied to study 22 characteristic indexes of the 13 spring cotton zones in all of the county in 2005,with cotton plant,cotton yield and fiber quality in all included.The result showed that the selection of the characters of short period and proper fruit branches is benefit to increase cotton yield;the long period characters will cause high initial plant and more fruit branches,thus,minus effect will be caused in fiber length,uniformity index;characters of more bolls per plant will increase the boll weight simultaneously,but will decrease the fiber length,fiber strength,uniformity and spinning consistence index,high micronaire value will affect fiber quality;high lint percentage may effectively increase cotton yield,decrease fiber yellow degree,but can increase the micronaire value and make fiber thicker.更多还原