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Varietal Response of Acacia species to Salinity Stress During Germination and Seedling Growth
S. Rehman,Song Joon Yun,Jin Key Kim,Byung Soo Seo,Nam Hee Yoo,Kui Jae Lee,Sheong Chun Lee,Eui Shik Rha,A. H. Deghayes,W. F. Bourne,P. J. C. Harris 한국육종학회 2002 한국육종학회지 Vol.34 No.4
Seeds and seedlings of Acacia bivenosa D.C. Prod, A. salicina Lindl., A. saligna (Labill.) H. Wendl. and A. tumida F. Muell. ex Benth were germinated and grown in NaCl solutions to investigate the relative salt tolerance among the different species, and t
Variation in Salt Tolerance within a Batch of Acacia salicina Seeds
Rehman, Shafiq,Deghayes, A-H.,Bourne, W. F.,Harris, P. J. C.,Rha, Eui Shik 한국국제농업개발학회 2002 韓國國際農業開發學會誌 Vol.14 No.1
Seeds of Acacia salicina Lindl., germinated in the presence of 2000 mol m^-3 NaCl (tolerant), seeds that failed to germinate in NaCl but germinated after washing in distilled water (sensitive), and seeds germinated in distilled water (unselected) were transplanted to a greenhouse. After 1 week, they were treated with 0, 100 or 200 mol m^-3 NaCl in half-strength Hoagland's solution for 5 weeks. Plants from tolerant seeds grew larger without, but not with, salt stress, and suffered lower mortality in NaCl. In order to select for salt tolerance at the seedling stage, 6 week-old plants were treated with NaCl solutions increasing to 200 mol m^-3 over 3 weeks, and then divided into tall (tolerant) and short (sensitive) plants. These were treated with NaCl in the greenhouse as above. Selection of plants on the basis of their height under stress provided plants with greater survival and less reduction in growth when subsequently exposed to NaCl stress. However, it is unclear whether the procedures employed selected for physiological salt tolerance or merely for general plant vigour.