Effect of root formation on 14C-glycine uptake and incorporation into protein by attached and excised cotyledons of Helianthus annuus |
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| Authors: | A M S MOHAMMAD A E YOUSIF |
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| Institution: | Biology Department, College of Science, Mosul University, Mosul, IRAQ |
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| Abstract: | Root formation was found to extend the life-span of excised cotyledons of Helianthus annuus L. markedly. Excised cotyledons of 12-day-old plants attained longer life-span, higher root number and total root length than cotyledons excised before or after 12 days. Protein content of attached cotyledons reached a maximum level 12 days after the commencement of germination followed by a decrease. Cotyledons excised 8 days after sowing showed maximum level of protein content 44 days after excision followed by a decrease. The increase was correlated with the full development of roots. The incorporation of 14C-glycine into protein followed a pattern similar to the protein content, both in attached and detached cotyledons. |
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