The role of hormones in regulating the germination of polymorphic seeds and early seedling growth of Atriplex triangularis under saline conditions |
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Authors: | M. Ajmal Khan Irwin A. Ungar |
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Affiliation: | Dept of Botany, Univ. of Karachi, Karachi-32, Pakistan;Dept of Botany, Ohio Univ., Athens, OH 45701, USA. |
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Abstract: | Germination of the polymorphic seeds and seedling growth of Atriplex triangularis under various salinity, gibberellic acid and kinetin treatments were determined. Gibberellic acid (GA3; 2.9 m M ) promoted germination and growth at high NaCl concentrations (345 m M ). Kinetin (4.7 μ M ) stimulated germination at all salinities and seed sizes tested. GA3 and kinetin generally increased seedling growth at all concentrations of salinity studied. Higher concentrations of kinetin were found to be inhibitory. |
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Keywords: | Dormancy GA3 halophyte kinetin polymorphism |
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