Treatments affecting dormancy in sweet sorghum seed

Gaber, S.D. and Abdalla, A.H. and Mahdy, M.T. (1974) Treatments affecting dormancy in sweet sorghum seed. Seed Science and Technology, 2 (3). pp. 305-316.

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Abstract

The optimum constant temperature for germination of dormant sorghum seed was 30 deg C (41% germination), but alternating 20 deg for 16 h/30 deg for 8 h gave 94% germination. Pre-chilling or water-soaking dormant seeds stimulated germination. Germination of dehusked seeds or embryo halves was significantly higher than that of intact seeds. 1M H2O2 was partly effective in breaking dormancy. NO3, HNO3 and hydroxylamine hydrochloride stimulated germination, but reduced nitrogenous compounds such as urea, thiourea, (NH4)2SO4, L-cystine or DL-alanine had no significant effect. HNO3 and H2SO4 promoted germination, but HCl had no effect. The multivalent cations tested had no significant effect on germination, except for 10mM AgSO4 which slightly inhibited germination. The chilling method recommended in the International Rules for Seed Testing was best for breaking dormancy

Item Type: Article
Author Affiliation: Seed Testing Research Station, Ministry of Agriculture, Orman, Giza, Egypt
Subjects: Plant Physiology and Biochemistry > Plant Physiology
Plant Physiology and Biochemistry > Biochemistry
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 30 Aug 2012 05:33
Last Modified: 30 Aug 2012 05:35
URI: http://eprints.icrisat.ac.in/id/eprint/7603

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