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The Journal of Indian Botanical Society
Year : 2010, Volume : 89, Issue : 3and4
First page : ( 293) Last page : ( 296)
Print ISSN : 0019-4468. Online ISSN : 2455-7218.

Efeect of Boron on Mitotic Index and Seed Germination of Sunflower

Pandey N.*, Archana

Plant Nutrition and Stress Physiology Laboratory, Department of Botany, University of Lucknow, Lucknow-226007

*E-mail: nalini_pandey@rediffmail.com

Online published on 25 April, 2016.

Abstract

This work establishes the role of boron in cell division and in germination of seeds as well as the rate of growth in seedling. For this seeds of sunflower (Helianthus annus L. var. sungold) were germinated in distilled water and in nutrient solution containing varied concentrations of boron. The effect of boron on the mitotic index and mitotic phase frequencies in sunflower root meristematic cells were investigated after 48 hours of soaking in solutions. The maximum frequency of all phases as well as highest mitotic index was found to be at 0.33 mM boron treatment. Treatment of 33 mM boron was found to be toxic and had inhibitory effect on cell division. Germination percentage as well as length of radical and plumules were highest at 0.33 mM boron.

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Keywords

Boron, Mitotic index, Seed germination, Sunflower.

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