海陆杂交长绒棉棉铃、纤维品质性状及相关性分析OACSTPCD
Island-upland hybrid long-staple cotton boll traits,fiber quality traits and correlation analysis
[目的]明确海陆杂交长绒棉的棉铃、纤维品质性状及相关性,为选育高产海陆杂交长绒棉提供参考依据.[方法]以自主选育的抗虫陆地棉种质系为母本、生产上推广应用的新疆长绒海岛棉品种为父本,配制海陆杂交棉新组合,分析23个海陆杂交棉组合F1 代的棉铃、纤维品质性状以及相关性.[结果]23个海陆杂交棉组合F1 代单铃重变幅为3.7～5.0 g,单铃重超过 4.2 g的组合有 12 个,变异系数为 9.0%;衣分变幅为 20.1%～36.7%,衣分超过 30.0%的组合有 5 个,变异系数为 10.7%.不同组合F1 代纤维长度变幅为 34.5～38.5 mm,纤维长度在 35.0 mm以上的组合有 22 个,变异系数为 2.6%;纤维比强度变幅为 34.8～41.8 cN/tex,纤维比强度超过 39.0 cN/tex的组合有 9 个,变异系数为 5.3%;马克隆值变幅为 2.8～4.2,马克隆值A级的组合有 10 个,变异系数为 11.8%.海陆杂交棉的单铃重与不孕籽率呈极显著负相关(r=-0.683**)、与每囊粒数呈极显著正相关(r=0.660**)、与每铃囊数呈显著正相关(r=0.495*);海陆杂交棉的纤维整齐度与纤维长度、纤维比强度呈极显著正相关(r=0.578**、r=0.639**),与伸长率呈显著正相关(r=0.506*);衣分与纤维长度呈显著负相关(r=-0.475*).在 23个海陆杂交棉组合中,W042×新海53号、W046×新海54号、W047×新海 54号的棉铃性状与纤维品质性状已呈现同步改良.[结论]利用陆地棉与长绒海岛棉的杂交互补优势,可以实现长绒棉产量性状与纤维品质性状的同步改良.
[Objective]Understand the cotton boll and fiber quality traits and their correlation of island-upland hybrid long-staple cotton to provide references for breeding high yield island-upland hybrid long-staple cotton.[Methods]New hybrid combinations of island-upland cotton were developed using self-selected insect-resistant upland cotton germplasm line as female parent,and production promoted and applied Xinjiang long-staple island cotton variety as male parent.The cotton boll traits,fiber quality traits and the correlations of the F1 of the 23 island-upland hybrid cotton combinations were analyzed.[Results]In the 23 island-upland hybrid cotton combinations,the variation range of F1 single boll weight was 3.7-5.0 g.12 combinations had single boll weight over 4.2 g,with a 9.0%coefficient of variation.The variation range of lint percentage was 20.1%-36.7%.5 combinations had lint percentage over 30.0%,with a 10.7%coefficient of variation.The variation range for fiber length was 34.5-38.5 mm.22 combinations had fiber length over 35.0 mm,with a 2.6%coefficient of variation.The variation range of fiber specific strength was 34.8-41.8 cN/tex.9 combinations had fiber specific strength over 39.0 cN/tex,with a 5.3%coefficient of variation.The variation range of micronaire value was 2.8-4.2.There were 10 combinations with A-level micronaire value and a coefficient of variation of 11.8%.The single boll weight of the island-upland hybrid cotton was extremely significantly(r=-0.683**)negatively correlated with the sterile seed rate,extremely significantly(r=0.660**)positively correlated with seed numbers per capsule and significantly(r=0.495*)positively correlated with capsule numbers per boll.The fiber uniformity of the island-upland hybrid cotton was extremely significantly(r=0.578**,r=0.639**)positively correlated with fiber length and fiber specific strength,and significantly(r=0.506*)positively correlated with elongation rate.Lint percentage was significantly(r=-0.475*)negatively correlated with fiber length.Among 23 island-upland hybrid cotton combinations,W042×Xinhai No.53,W046×Xinhai No.54 and W047×Xinhai No.54 showed simultaneous improvement of cotton boll traits and fiber quality traits.[Conclusion]The simultaneous improvement of yield and fiber quality traits of long-staple cotton can be realized by utilizing the complementary heterosis crossing upland cotton with long-staple island cotton.
陈旭升;赵亮;狄佳春
江苏省农业科学院经济作物研究所,江苏南京 210014
农业科学
海陆杂交长绒棉棉铃重衣分纤维品质相关性
Island-upland hybrid long-staple cottonCotton boll weightLint percentageFiber qualityCorrelation
《北方农业学报》 2024 (001)
10-15 / 6
国家转基因特色专用棉新品种培育子课题项目(2020ZX08005-005)
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