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Acta Prataculturae Sinica ›› 2024, Vol. 33 ›› Issue (10): 83-95.DOI: 10.11686/cyxb2024038

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A multi-trait evaluation of production performance and nutritional quality of different oat varieties in the Sanjiangyuan area

Jin-lan WANG1,3(), Xiao-jun WANG2,3, Qi-lin LIU2,3, Guo-ling LIANG2,3, Ze-liang JU2,3, Hong-mei SHI4, Xiao-bing WANG5, Pei WEN6, Qingmeiranding6, Wen LI2,3()   

  1. 1.State Key Laboratory of Plateau Ecology and Agriculture,Qinghai University,Xining 810016,China
    2.Academy of Animal and Veterinary Sciences,Qinghai University,Qinghai Academy of Animal and Veterinary Sciences,Xining 810016,China
    3.Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau,Xining 810016,China
    4.Animal Husbandry Station,Gannan Tibetan Autonomous Prefecture,Hezuo 747000,China
    5.Qinghai Runda Agriculture and Animal Husbandry Technology Company Limited,Maqin 814000,China
    6.Yushu Amixue Dairy Development Company Limited,Zhiduo 815400,China
  • Received:2024-01-27 Revised:2024-03-07 Online:2024-10-20 Published:2024-07-15
  • Contact: Wen LI

Abstract:

The objective of this research was to identify oat (Avena sativa) varieties providing high yield and quality, suitable for planting in the Sanjiangyuan area. Fifteen oat varieties were selected for testing, and their agronomic traits, yield traits and quality traits evaluated, in connection with oat variety introduction in Banma County and Zhiduo County. The piecewise structural equation model was used to explore how varieties, region and their interactions affected nutritional quality via agronomic traits and yield traits, and a multi-criterion decision model-TOPSIS (technique for order preference by similarity to an ideal) was used to perform an integrated evaluation of the various indexes of tested oat varieties, thus identifying varieties with high performance and suitable for planting in the Sanjiangyuan area, and providing supporting data for forage production in this area. It was found that: None of the 15 oat varieties achieved seed maturity and completed the growth period. The plant height of A. sativa cultivars Qingyan No.2, Qingyan No.5 and Qingyin No.1 (82.2-89.7 cm) were higher than other oat varieties. The hay yields of A. sativa cultivars Qingyan No.4, Qingyan No.3 and Qingyan No.5 (1012.3-1167.1 g·m-2) were highest, while the crude protein contents of A. sativa cultivars Qingyin No.2, Longyan No.1 and A. sativa cv. Qingyan No.5 (7.6%-8.1%). were higher than those of other varieties. The cultivar Qingyan No.5 had lower stem∶leaf, acid detergent fiber and neutral detergent fiber contents, and accordingly relative feeding value was higher than other cultivars. The sructural equation model analysis showed that varieties, region and their interactions indirectly affected the nutritional quality of oats, mainly through oat yield and height. The integrated multi-trait evaluation using a TOPSIS model showed that A. sativa cultivars Qingyan No.5 and Qingyan No.3 not only provided high yield performance, but also had high nutritional quality. These two oat varieties are therefore recommended for planting in the Sanjiangyuan area.

Key words: Sanjiangyuan area, oat, production performance, nutritional quality, comprehensive evaluation