Possible Utilization of Halophytes as Alternative Crops in Saline Agroecosystems

نویسنده:
,
سال
: 2009
چکیده: High salinity causes water deficit, ion toxicity, and nutrient deficiency leading to molecular

damage, growth arrest of plants. Production of halophytes using saline waters and soils is one of

the most sustainable ways of conservation desert ecosystems. Therefore, in order to study the

possibility of growing Kochia (Kochia scoparia) as a forage crop in arid environments reach in

saline underground water, a series of experiments were performed. Germination tests were

evaluated in germinators under different temperatures (10-40 oC, with 5 oC intervals), and

salinity levels (0-20 dS/m, 5 dS/m intervals). Growth and development of kochia tested in the

field in three levels of saline irrigation water (1.5, 8.6 and 28.2 dS/m). The biological yield, leaf

and stem dry weight, plant height, number of branches, oil yield, protein percentage, protein

yield were measured. The results showed that kochia can adjust its germination in a wide range

of temperature, from 3.4 (Tbase) to 49.7 oC (Tmax) and optimum germination temperature of 24

oC. Salinity negatively influenced the majority of plant\\\\\\'s morphological and physiological

indices, yet the dry matter accumulation in the highest salinity level reached 60% of plants in

lower saline levels, and even the moderate salinity caused a little stimulus in plant\\\\\\'s growth and

yield performance. Results showed that the highest biological and seed yield obtained at 30 and

20plant m-2 respectively. In Conclusion, the Kochia’s high production capacity in the presence

of salinity and other desert stresses such as high temperature and drought make this plant

capable as a forage crop in harsh environmental conditions.
کلیدواژه(گان): Possible Utilization of Halophytes as Alternative Crops in Saline Agroecosystems
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