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Publication Type J
Authors Flores, A. M., B. J. Schutte, M. K. Shukla, G. A. Picchioni and A. L. Ulery
Title Time-integrated measurements of seed germination for salt-tolerant plant species
Source Seed Science and Technology
Author Keywords wheat
Abstract Water scarcity in arid regions has led to a decline of surface water available for agriculture. One way to augment the irrigation water supply is to run saline groundwater through an inland reverse osmosis (RO) system and utilise RO wastewater to irrigate salt-tolerant plants. The objective of the study was to improve knowledge of candidate halophyte species for cultivation on RO wastewater land application sites by comparing time integrated germination measurements of seeds exposed to saline groundwater and concentrate from RO facilities. The germination of six halophyte species (Atriplex canescens, Hordewn vulgare, Lepidium alyssoides, Distichlis stricta, Panicum virgatum, xTriticosecale) was studied in 22-day germination tests conducted in growth chambers set to 25/15 degrees C day/night temperatures with 12-hour photoperiods. Seeds of each species were placed in filter paper-lined Petri dishes, moistened with one of four saline treatments (EC 0, 0.6, 4.0, and 10.0 dS m(-1)). Germinability, mean germination time, germination index, Timson's index and Timson's modified index were calculated. Results showed that germination percentages were similar within a species across salinity treatments, with the exception of L. alyssoides which showed increased germination under high salinity. Except for A. canescens, all species showed germination delays in response to increasing salinity. On the basis of germination, the six species in this study appear suitable for cultivation on RO wastewater land application sites. However, further investigation is needed to determine salt effects on growth during additional life stages.
Author Address [Flores, A. M.; Schutte, B. J.; Shukla, M. K.; Picchioni, G. A.; Ulery, A. L.] New Mexico State Univ, Plant & Environm Sci Dept, POB 30003,MSC 3Q, Las Cruces, NM 88003 USA. Flores, AM (reprint author), New Mexico State Univ, Plant & Environm Sci Dept, POB 30003,MSC 3Q, Las Cruces, NM 88003 USA. amflores@nmsu.edu
ISSN 0251-0952
ISBN 0251-0952
29-Character Source Abbreviation Seed Sci. Technol.
Year Published 2015
Volume 43
Issue 3
Beginning Page 541-547
Unique Article Identifier WOS:000369044700019
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