کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2179702 1095073 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Alternanthera bettzickiana (Regel) G. Nicholson, a potential halophytic ornamental plant: Growth and physiological adaptations
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Alternanthera bettzickiana (Regel) G. Nicholson, a potential halophytic ornamental plant: Growth and physiological adaptations
چکیده انگلیسی

Exploration and cultivation of salt tolerant plants is a very effective strategy for utilization of salt affected soils. In this investigation, physiological traits that are conducive for salt tolerance of the ornamental plant Alternanthera bettzickiana, Amaranthaceae, were explored. A. bettzickiana was grown on soil substrate having six salinity levels (2.86, 10, 20, 30, 40 and 50 dS m−1). It was observed that this plant can grow even at a salinity level of 40 dS m−1. The survival rate of this plant was 75, 42 and 0% at salinity levels of 30, 40 and 50 dS m−1, respectively. A. bettzickiana plants produced 30.3% less biomass than controls at the salinity level of 20 dS m−1 and even less under still higher salt stress. Photosynthesis continued even at the salinity level of 40 dS m−1, though its rate was reduced to 59% in plants exposed to such salinity relative to plants not affected by salinity. Total soluble proteins values in leaf and stem showed a gradual increase when plants were exposed to increasing salt stress. Plants growing at the high salinity level showed highest decrease in leaf nitrate reductase activity. A. bettzickiana plants accumulated less Na+ in shoo

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Flora - Morphology, Distribution, Functional Ecology of Plants - Volume 207, Issue 4, April 2012, Pages 318–321
نویسندگان
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