长江流域杂交棉主要农艺性状与产量和品质的关系

Research on the Relationship between Main Agronomic Traits and Production Quality of Hybrid Cotton in Yangtze River Basin

选用长江流域20个杂交棉新品种(系),就其主要农艺性状与产量、品质的关系进行研究。结果表明,品种间皮棉产量存在着显著或极显著差异,主要农艺性状与产量、品质存在相关性。相关性分析结果表明,皮棉产量与单株铃数、衣分分别呈显著、极显著正相关,而与生育期、子指纤维长度、断裂比强度呈负相关;除断裂比强度、果枝数、始果节位、单株铃数和霜前花率外,其余各主要农艺性状与纤维长度均呈负相关,其中与株高的相关性达显著水平;各主要农艺性状与马克隆值相关程度依次为:衣分>单铃重>株高>单株铃数>果枝数>生育期>子指>始果节位;断裂比强度与生育期、衣分呈显著负相关,与其余各性状相关不显著。

The relationship between agronomic traits and yield and fiber quality was studied using 20 new hybrid cotton cultivars(lines) as materials.The results revealed significant or highly significant differences in lint yield of different cultivars.There was correlation between cotton agronomic traits and yield and fiber quality.The correlation analysis showed that the correlation between lint yield and number of fruiting branches,lint percentage were significantly or highly significantly positive,while between lint yield and fertility,seed index,fiber length,fracture strength was negative.Except for fracture strength,boll branch number,node of first fruit,boll number per plant and pre-frost yield,the other cotton agronomic traits was negatively correlated with fiber length,among which the correlation between plant height and fiber length was significantly negative.The relevance between cotton agronomic and Mic value ranked as lint percentage> single boll weight> plant height> boll number per plant> number of fruiting branches>seed index> node of first fruit.Fracture strength was significantly negatively correlated with fertility and lint percentage,while had no significant correlation with the other characters.