Full TGIF Record # 237574
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Publication Type:
i
Report
Author(s):Chen, Chuan-jun; Shen, Yi-xin; Zhou, Jian-guo; Li, Zhi-hua
Author Affiliation:College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
Title:Changes in turf quality and leaf antioxidants of Poa pratensis during high-temperatures in summer
Source:[Caoye Xuebao] [Acta Prataculturae Sinica]. Vol. 15, No. 4, August 20 2006, p. 81-87.
# of Pages:7
Publishing Information:[Lanzhou Shi, China]: ["Cao Ye Xue Bao" Bian Ji Wei Yuan Hui]
Abstract/Contents:"Poa pratensis has been widely used for turf establishment in temperate regions, but the turf quality often declines significantly under high-temperature stress during summer. Tthe [The] relationships between decrease of turf quality and physiological activities of Poa pratensis, on changes in coverage, tiller density, turf quality and contents in chlorophyll and water of leaves, activities of superoxide dismutase (SOD) and peroxidase (POD) and content of malondialdehyde (MDA) were assessed during the summer months on six cultivars in Nanjing. The results showed that coverage, tiller density, turf quality, leaf chlorophyll and water content declined markedly along with turgidity under the persisting stress of heat and drought. Compared with mid-June, turf quality and leaf water content in mid-August had declined about 12.1%-49.8% and 14.2%-27.6%, respectively. Similarly, the activities of SOD and POD in leaves declined 36.5%-55.0% and 46.9%-65.7%, respectively, while the MDA content increased from 19.8% to 88.7%. However, reduced turf quality, leaf water content, SOD and POD activities and the increased degree of MDA in summer differed significantly between cultivars. The extent of changes in Nannong and Midnight (W) lines were less than those of other cultivars, such as Bluechip and Sobra. Turf quality of Nannong line and Midnight (W) in summer was also higher than that of other cultivars. The correlation analysis indicated that a decrease in POD activity was negatively correlated with turf quality under field conditions. It suggests that higher POD activities and leaf water content may be important indicators associated with tolerance of heat and drought stress in Poa pratensis."
Language:Chinese
References:27
Note:Abstract also appears in English
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Chen, C.-j., Y.-x. Shen, J.-g. Zhou, and Z.-h. Li. 2006. Changes in turf quality and leaf antioxidants of Poa pratensis during high-temperatures in summer. (In Chinese) [Caoye Xuebao] [Acta Prataculturae Sinica]. 15(4):p. 81-87.
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