Salinity tolerance evaluation of Zoysia turfgrass germplasm

Abstract

Abstract: Salinity tolerance in 103 Zoysia accessions from seven species was assessed in hydroponic culture containing 20 g/L NaCl. The relative green leaf coverage and relative dry shoot clipping weight showed that there were differences in salinity tolerance between accessions. Using relative green leaf coverage as an indicator, there were 28 and 46 accessions with more salinity tolerance than ‘manilagrass’ and Zoysia japonica ‘Lanyin No.3’, respectively. When compared by relative dry shoot clipping weight, there were 11 and 25 accessions with more salinity tolerance than ‘manilagrass’ and Z. japonica ‘Lanyin No.3’, respectively. Z. pacifica was the most salinity tolerant species, Z. macrostachya, Z. matrella, and Z. tenuifolia had strong salinity tolerance, while Z. sinica, Z. japonica and Z. koreana were intermediate or sensitive. Clustering analysis of relative green leaf coverage and relative dry shoot clipping weight, indicated that the 103 Zoysia accessions could be divided into three groups: group Ⅰ (including Z5185 and Z093) was extremely saline tolerant; group Ⅱ had comparatively higher relative green leaf coverages and relative dry shoot clipping weights (>70%). It could be further divided into salinity tolerance and intermediate salinity tolerance; group Ⅲ had comparatively low relative green leaf coverage and relative dry shoot clipping weight, and could be divided into weak and sensitive salinity tolerance at a Euclidean distance of 3.

CLC Number:

LI Shan, CHEN Jing-bo, GUO Hai-lin, ZONG Jun-qin, ZHANG Fang, CHU Xiao-qing, JIANG Qiao-feng, DING Wan-wen, LIU Jian-xiu. Salinity tolerance evaluation of Zoysia turfgrass germplasm[J]. Acta Prataculturae Sinica, 2012, 21(4): 43-51.

References

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