新疆早熟棉花主要农艺性状相关性及多项式趋势分析

以新疆早熟陆地棉预备试验品系为材料,对其主要农艺性状进行了相关性和多项式趋势分析,结果表明:生育期、单铃质量及籽指与霜前皮棉产量成负相关,影响力顺序为生育期>籽指>单铃质量;果枝始节位、株高、单株铃数及衣分与霜前皮棉产量成正相关,影响力大小为衣分>株高>单株铃数>果枝始节位。并提出新疆早熟棉区棉花育种的主要农艺性状目标为:生育期127～132 d、果枝始节位4.4～5.3、株高(7月15日打顶后自然株高)62～74 cm、单株铃数6.5～9个、单铃质量5.2～5.9 g、籽指10.1～11.3、衣分42%左右。

Correlations and Polynomial Trend Analysis on Main Agronomic Traits of Early Maturing Cotton in Xinjiang

Using preparatory experiment lines of early maturing upland cotton as test materials,genetic correlation and polynomial trend of main agronomic traits were analyzed.The results showed that growth duration,a single boll quality and seed index were negatively correlated with cotton lint yield,and the effect ability from high to low was growth duration,seed index,and a single boll quality.Cotton lint yield were positively associated with the first burl of boll,plant high,boll number of per plant and lint percentage.The influence ability followed the order,lint percentage>plant high>boll number per plant>the first burl of boll.The breeding aim of early maturing cotton varieties in Xinjiang with growth duration 127～132 d,the first burl of boll 4.4～5.3,plant high(cutting peak after July 15) 62～74 cm,boll number per plant 6.5～9,a single boll quality 5.2～5.9 g,seed index 10.1～11.3 and lint percentage 42% were suggested.