The influence of various types of root environment salinities on thegrowth of different plant species
2001
Abdullah, M.,Water Resources Research Centre, Quetta (Pakistan))Kahlown, M.A
Saline soils contain varying amounts and proportions of ions ofNa+, Ca2+, Mg2+, Cr, SO4 2-. About 60 percent of the saline soils inPakistan are saline-sodic or sodic in nature containing highproportions of Na+ compared to Ca2+ and Mg2+. The injurious saltscommonly present in salt affected soils of Pakistan are NaCl andNa2SO4, although MgCl2 and MgSO4 are also found in some places.Responses to salinity vary widely from soil to soil, plant to plant andfrom one salt type to another under field conditions. The presence ofvarious kinds of salts in dominant amount in soil and plant systemsbring about a series of physical, chemical, bio-chemical, morphologicaland physiological changes that profoundly influence the normal plantgrowth. The better understanding of such plant growth suppressionfactors due to presence of different dominant salt species in salt-affected soils will help the soil and plant as well as bio-salinescientists, biologists, plant breeders and bio-technologists to addressthe problem in better way. The literature available on this importantaspect is enough but is scattered one. The research work conductedunder various types of root environment salinities on different plantspecies is being discussed.
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