基于同一度的云南甘蔗细茎野生种血缘F1代创新种质材料分类

【目的】对原生地为云南半湿润半干燥生态型的甘蔗细茎野生种血缘F1代创新种质材料进行分类，为有针对性利用这些创新种质材料提供科学依据。【方法】对20个甘蔗细茎野生种血缘F1代创新种质材料的9个性状进行调查，采用集对分析同一度的综合评价方法进行分类。【结果】20个参试甘蔗材料被分为10个类型：Ⅰ类包括8个材料，综合表现较好，占参试材料总数的40%；Ⅱ类包括1个材料，分蘖力、宿根性特强、低锤度；Ⅲ类包括两个材料，有效茎数多、特高产、中等锤度；Ⅳ类包括1个材料，高产、高锤度；Ⅴ类包括两个材料，分蘖差、低产、中等锤度；Ⅵ类包括1个材料，茎细、低产、中等锤度；Ⅶ类包括1个材料，茎特细、低产、高锤度，枯心苗率为0，可能抗旱或抗螟虫；Ⅷ类包括两个材料，大茎、高产、高锤度；Ⅸ类包括1个材料，茎细、高产、高锤度；Ⅹ类包括1个材料，茎细、低产、高锤度。【结论】各类甘蔗创新种质材料均表现出良好的分蘖力、宿根性和较多的有效茎数，且各有特点。有针对性地利用不同类型甘蔗种质材料，可培育出各具特色的创新亲本材料，从而丰富中国甘蔗育种的遗传基础。

Classification of innovation germplasm materials of Yunnan Saccharum spontaneum L. blood F1 generation based on degree of identity

【Purpose】This research classified the innovation germplasm materials of Saccharum spontaneum L. blood F1， which originated from the semi-humid and semi-dry ecological environment in Yunnan Province， in order to provide scientific basis for the targeted use of innovation germplasm materials. 【Method】For the innovation germplasm materials of 20 Saccharum spontaneum blood F1 generations， the tested material’s 9 traits were individually investigated through the comprehensive evaluation method using set pair analysis of degree of identity. 【Result】The 20 tested materials were classified into 10 types. Type I consisted of 8 germplasm materials with relatively good comprehensive performance， which accounted for 40% of the total number of tested materials； type II contained one germplasm material with extremely strong tillering and ratooning ability and low Brix； type III included 2 germplasm materials with large number of millable stalks， extraordinarily high yield， and medium Brix； type IV included one germplasm material with high yield and Brix； type V included 2 germplasm materials with low tillering ability， low yield， and medium Brix； type VI included one germplasm material with thin stalk， low yield， and medium Brix； type VII included one germplasm material with extremely fine stalk， low yield， high Brix， no withered heart sprout rate， and possible drought resistance and borer resistance； type VIII included 2 germplasm materials with thick stalk， high yield， and high Brix； type IX included one germplasm materials with thin stalk， high yield， and high Brix； lastly， type X has one germplasm material with thin stalk， low yield， and high Brix. 【Conclusion】All germplasm materials show good tillering and ratooning ability and relatively large number of millable stalks. The use of different types of germplasm materials in moderation could possibly breed distinctive innovation parent materials， which could enormously enrich the hereditary basis of sugarcane breeding in China.