Full TGIF Record # 237488
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Author(s):Zhou, Xing-yuan; Cao, Fu-liang; Liu, Guo-hua
Author Affiliation:Zhou and Cao: Nanjing Forestry University, Nanjing; Liu: Jiangsu Agriculture and Forestry Polytechnic College, Jurong, China
Title:Physiological responses of two warm-season turfgrasses to persistent soil drought stress
Source:[Caoye Xuebao] [Acta Prataculturae Sinica]. Vol. 13, No. 1, February 20 2004, p. 84-88.
# of Pages:5
Publishing Information:[Lanzhou Shi, China]: ["Cao Ye Xue Bao" Bian Ji Wei Yuan Hui]
Abstract/Contents:"The physiological responses of Zoysia matrella and Eremochloa ophiuroides to progressively decreasing soil moisture were studied. The renewing-water supply experiment showed that Z. matrella had greater drought resistance than E. ophiuroides. With declining soil moisture, leaf water content continually decreased and water saturation deficit increased. Proline (Pro) content increased initially then decreased, but the Pro content peak of Z. matrella occurred later and was higher than E. ophiuroides. Therefore the relative appearance time of the Pro content peak, and its Pro content amount are two indices for determining drought resistance. During the initial stress period, root viability was higher than the control. With increased stress, root viability gradually decreased, but Z. matrella maintained a high level for a longer time. During the initial stress period, leaf protoplasmic membrane penetration (RPP) and MDA increased slowly, and leaf SOD activity was higher than the control. When drought stress reached a certain degree, RPP and MDA sharply increased, but SOD activity sharply decreased. However, relative to E. ophiuroides, Z. matrella maintained SOD activity for a longer time, and the increase extent of RPP and MDA was less. This is one of the physiological mechanisms giving Z. matrella greater drought resistance than E. ophiuroides."
Note:Abstract also appears in English
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhou, X.-y., F.-l. Cao, and G.-h. Liu. 2004. Physiological responses of two warm-season turfgrasses to persistent soil drought stress. (In Chinese) [Caoye Xuebao] [Acta Prataculturae Sinica]. 13(1):p. 84-88.
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