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[目的]为了补充新品种DUS测试所需标准品种库。[方法]以24个标准品种和6个待测品种为材料,通过田间性状鉴定和测试研究了杂交棉品种的DUS测试,并讨论了相关问题。[结果]标杂A1的株高为120.7 cm,单铃重为5.8 g,衣分为38.4%,生育期为115 d,纤维长度为31.4 mm,整齐度指数为83.3%,马克隆值为4.5,比强度为28.7 CN/tex。标杂A2的株高为123.6 cm,单铃重为5.8 g,衣分为36.1%,生育期为117 d,纤维长度为33.2 mm,整齐度指数为82.0%,马克隆值为4.4,比强度为29.6 CN/tex。豫杂35的株高为112.6 cm,单铃重为5.3 g,衣分为40.5%,生育期为114 d,纤维长度为31.1 mm,整齐度指数为83.5%,马克隆值为4.1,比强度为28.6 CN/tex。[结论]该研究对待保护品种的DUS测试具有重要的参考价值和指导意义。
[Objective] In order to supplement the standard variety library needed for the new variety DUS test. [Method] With 24 standard varieties and 6 tested cultivars as materials, the DUS test of hybrid cotton cultivars was studied through field characterization and testing, and the related problems were discussed. [Result] The plant height of standard hybrid A1 was 120.7 cm, the single boll weight was 5.8 g, the percentage of clothes was 38.4%, the growth period was 115 d, the fiber length was 31.4 mm, the uniformity index was 83.3% and the micronaire value was 4.5 , The specific intensity of 28.7 CN / tex. Standard A2 plant height was 123.6 cm, single boll weight was 5.8 g, divided into 36.1%, growth period of 117 d, fiber length of 33.2 mm, uniformity index of 82.0%, micronaire value of 4.4, specific strength 29.6 CN / tex. The plant height of Yuza 35 was 112.6 cm, the boll weight was 5.3 g, the coat was divided into 40.5%, the growth period was 114 d, the fiber length was 31.1 mm, the uniformity index was 83.5%, the micronaire value was 4.1, the specific intensity 28.6 CN / tex. [Conclusion] This study has important reference value and guiding significance for the DUS test of protected cultivars.