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Acta Botanica Croatica, Vol. 75 No. 1, 2016.

Izvorni znanstveni članak

https://doi.org/10.1515/botcro-2016-0018

Physiological responses of two halophytic grass species under drought stress environment

Zamin Shaheed Siddiqui orcid id orcid.org/0000-0002-4650-0989 ; Stress Physiology Lab., Department of Botany, University of Karachi, Karachi – 75270, Pakistan
Huda Shahid ; Stress Physiology Lab., Department of Botany, University of Karachi, Karachi – 75270, Pakistan
Jung-Il Cho ; National Academy of Agricultural Sciences, Rural Development Administration, Suwon 441-707, Republic of Korea
Sung-Han Park ; National Academy of Agricultural Sciences, Rural Development Administration, Suwon 441-707, Republic of Korea
Tae-Hun Ryu ; National Academy of Agricultural Sciences, Rural Development Administration, Suwon 441-707, Republic of Korea
Soo-Chul Park ; National Academy of Agricultural Sciences, Rural Development Administration, Suwon 441-707, Republic of Korea

Puni tekst: engleski pdf 332 Kb

str. 31-38

preuzimanja: 1.377

citiraj

Sažetak

The physiological responses of two halophytic grass species, Halopyrum mucronatum (L.) Staph. and Cenchrus ciliaris (L.), under drought stress were evaluated. Biomass accumulation, relative water content, free proline, H2O2 content, stomatal conductance, photosynthetic performance and quantum yield (Fv/Fm ratio) were studied. Under drought conditions, these halophytic plants expressed differential responses to water defi cit. Stomatal conductance and free proline content were higher in H. mucronatum than in C. ciliaris, while H2O2 content in H. mucronatum was substantially lower than in C. ciliaris. Performance index showed considerable sensitivity to a water deficit condition, more so in C. ciliaris than in H. mucronatum. Results were discussed in relation to comparative physiological performance and antioxidant enzymes activity of both halophytic grasses under drought stress.

Ključne riječi

antioxidant enzymes activity; Cenchrus ciliaris; chlorophyll a fluorescence; drought stress; Halopyrum mucronatum, photosystem II

Hrčak ID:

155271

URI

https://hrcak.srce.hr/155271

Datum izdavanja:

1.4.2016.

Posjeta: 2.624 *