ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2018, Vol. 49 ›› Issue (2): 338-347.doi: 10.11843/j.issn.0366-6964.2018.02.013

Previous Articles     Next Articles

Field Evaluation of the Response and Resistance to Low Temperature of Alfalfa with the Different Stubble Heights during Overwintering

WANG Wei1, JIA Yu-shan1*, GE Gen-tu1, JIANG Xiao-wei1, YIN Qiang2   

  1. 1. Key Laboratory of Forage Cultivation Processing and High Efficient Utilization of Ministry of Agriculture, College of Grassland, Resources and Environment, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Institute of Grassland Research of Chinese Academy of Agricultural Sciences, Hohhot 010010, China
  • Received:2017-05-12 Online:2018-02-23 Published:2018-02-23

Abstract:

The aim of this study was to investigate the effect of stubble height on the response to the low temperature and cold-resistance overwintering. Three alfalfa cultivars of "Gold empress", "Zhungeer" and "WL323" were selected as experimental materials. The alfalfa with 4 stubble heights(0, 0-5, 5-10, 10-15 cm)were measured for the water soluble sugar(WSS), proline(Pro), MDA, soluble protein(SP) contents, SOD and CAT activities in the roots under natural environment, the cold-resistance of different cultivars with different stubble heights were evaluated comprehensively. The results showed that:1) The WSS, Pro, SP contents and CAT activity showed opposite trend to temperature; the trend of SOD activity and MDA content of different cultivars and stubble heights showed different variation with the temperature variation. 2) The cold-resistance of different alfalfa cultivars were "Zhungeer" > "Gold empress" > "WL323", and the cold-resistance of the same alfalfa cultivar with different stubble heights were A3 > A2 > A1 > A0. The results indicate that the cold-resistance of different alfalfa cultivars are different, and the recommended stubble height is 10-15 cm.

CLC Number: