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Acta Prataculturae Sinica ›› 2012, Vol. 21 ›› Issue (2): 280-285.

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A study on growth characteristics of different cultivars of oat (Avena sativa) in alpine region

XU Chang-lin   

  1. College of Pratacultural Science, Gansu Agricultural University, Key Laboratory of Grassland Ecosystem, Gansu Agricultural University, Ministry of Education, Pratacultural Engineering Laboratory of Gansu Province, Sino-U.S. Centers for Grazingland Ecosystem Sustainability, Lanzhou 730070, China
  • Received:2011-01-25 Online:2012-02-25 Published:2012-04-20

Abstract: The phonological phase, plant height, number of plants, yield and ratio of stem and leaf of eleven oat (Avena sativa) varieties in alpine regions of the Eastern Qilian Mountains were studied. The varieties Denmark No.444 and No.1 Qing-yongjiu could mature in these regions making them suitable for harvesting seeds and herbages. The plant height, plant tillers and herbage yield of introduced varieties were 130.6-155.7 cm, 2.77 tillers and 13.32-21.77 t/ha respectively, which were 1.1-1.4 times, 1.2 times and 1.9-3.2 times compared with the control. The varieties No.479 Qing-yongjiu, No.52 Qing-yongjiu, No.489 Qing-yongjiu, Chabei and Canadian had higher leaf contents (about 15% of total yields), while No.52 Qing-yongjiu, No.440 Qing-yongjiu, No.47 Qing-yongjiu, No.101 Qing-yongjiu, No.489 Qing-yongjiu, Chabei and Denmark No.444 had higher herbage yields (18.10 to 21.77 t/ha). The yields of oats could be estimated by the model Y=2 849.445+32.523H (R=0.886, P<0.01), where Y is the hay yields (g/m2) and H is the plant height (cm). Thus, the varieties No.52 Qing-yongjiu, No.479 Qing-yongjiu and Chabei had higher yields and leaf contents, making them suitable for planting in the alpine region.

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