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Analysis of Genetic Diversity by SSR Markers and Correlation of Main Agronomic Traits of Rice Germplasm Resources in Border Areas of Yunnan
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Cuifeng Tang1, Xinxiang A1, Chao Dong1, Feifei Zhang1, Yayun Yang1, Hongmei Yang2, Luyuan Dai1, Zhenxi Su3
Crops | 2026, 42(1) : 33 - 46
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Crops | 2026, 42(1): 33-46
Analysis of Genetic Diversity by SSR Markers and Correlation of Main Agronomic Traits of Rice Germplasm Resources in Border Areas of Yunnan
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Cuifeng Tang1, Xinxiang A1, Chao Dong1, Feifei Zhang1, Yayun Yang1, Hongmei Yang2, Luyuan Dai1, Zhenxi Su3
Affiliations
  • 1Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences / Yunnan Provincial Key Laboratory of Agricultural Biotechnology / Key Laboratory of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture and Rural Affairs / Scientific Observation Station for Rice Germplasm Resources of Yunnan, Ministry of Agriculture and Rural Affairs, Kunming 650032, Yunnan, China
  • 2Institute of Agricultural Research of Xishuangbanna, Xishuangbanna 666100, Yunnan, China
  • 3Institute of Food Crops,Yunnan Academy of Agricultural Sciences, Kunming 650000, Yunnan, China
Published: 2026-02-15 doi: 10.16035/j.issn.1001-7283.2026.01.006
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To analyze the genetic diversity of rice germplasm resources in the border areas of Yunnan Province and identify SSR markers closely related to major agronomic traits, a total of 376 newly collected rice germplasm resources from Yunnan (China), and its adjacent Myanmar and Laos were used as experimental materials. These resources were divided into three analysis units, and 11 phenotypic traits were investigated. Genetic diversity and association with phenotypic traits were analyzed using 27 pairs of SSR markers. Results showed that a total of 142 allelic variation loci were detected, including 100 rare allelic variation loci and nine peculiar allelic variation loci. Based on the comprehensive evaluation of six genetic diversity parameters, the scoring order of rice germplasm resources from the three analysis units was: Yunnan, China analysis unit > Myanmar analysis unit > Laos analysis unit. Among the 27 pairs of SSR markers, RM214, RM1086, RM5481, RM6089, RM1509, and RM7479 were closely associated with phenotypic traits, could explain more than 10.0% of the variation in panicle length, panicle exsertion, filled grains per panicle, unfilled grains per panicle, grains per panicle, and 1000-grain weight. Principal component analysis of phenotypic traits extracted four principal components with a cumulative contribution rate of 77.218%. A total of 36 excellent germplasm resources (comprehensive score ≥1.000) were selected. Among these, Huake, Nalei 5, and Haonuolang had a score greater than 2.000. They demonstrated potential as parents for multiple-tillering and large-panicle type, large-panicle type, and glutinous type, respectively.

Yunnan border areas  /  Rice germplasm resources  /  Genetic diversity  /  SSR marker  /  Correlation analysis
Cuifeng Tang, Xinxiang A, Chao Dong, Feifei Zhang, Yayun Yang, Hongmei Yang, Luyuan Dai, Zhenxi Su. Analysis of Genetic Diversity by SSR Markers and Correlation of Main Agronomic Traits of Rice Germplasm Resources in Border Areas of Yunnan[J]. Crops, 2026 , 42 (1) : 33 -46 . DOI: 10.16035/j.issn.1001-7283.2026.01.006
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Article Info
doi: 10.16035/j.issn.1001-7283.2026.01.006
  • Receive Date：2024-08-27
  • Online Date：2026-04-30
  • Published：2026-02-15
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History
  • Received：2024-08-27
  • Revised：2024-10-16
Funding
Affiliations
    1Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences / Yunnan Provincial Key Laboratory of Agricultural Biotechnology / Key Laboratory of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture and Rural Affairs / Scientific Observation Station for Rice Germplasm Resources of Yunnan, Ministry of Agriculture and Rural Affairs, Kunming 650032, Yunnan, China
    2Institute of Agricultural Research of Xishuangbanna, Xishuangbanna 666100, Yunnan, China
    3Institute of Food Crops,Yunnan Academy of Agricultural Sciences, Kunming 650000, Yunnan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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