TAILIEUCHUNG - Dynamics of 2,4-D in generation of cytomorphological variants in an important anticancerous and antihepatotoxic herb – Cichorium intybus L.
The genotoxic effect of 2,4-D was investigated in chicory (2n = 18). At 100 ppm concentration 4 variants differing in morphological traits were isolated and subjected to chromosomal analysis. Morphological variations in shape, height, and yield parameters were observed. | Research Article Turk J Bot 33 (2009) 383-387 © TÜBİTAK doi: Dynamics of 2,4-D in generation of cytomorphological variants in an important anticancerous and antihepatotoxic herb – Cichorium intybus L. Zeba KHAN*, Mohd. Yunus Khalil ANSARI, Honey GUPTA, Sana CHAUDHARY Cytogenetics and Mutation Breeding Lab. Department of Botany, Aligarh Muslim University, Aligarh-202002 . INDIA Received: Accepted: Abstract: The genotoxic effect of 2,4-D was investigated in chicory (2n = 18). At 100 ppm concentration 4 variants differing in morphological traits were isolated and subjected to chromosomal analysis. Morphological variations in shape, height, and yield parameters were observed. Different cytological anomalies such as univalents, multivalents, bridges, laggards, chromosome stickiness, and polyads occurred in all 4 isolates. However, the frequency of these chromosomal irregularities decreased at anaphase, exhibiting recovery at later stages. Thus the above concentration of growth hormone 2,4-D can be effectively incorporated for raising viable mutants in this medicinally useful herb. Key words: 2,4-D, Cichorium intybus Introduction Cichorium intybus L. is an important medicinal plant of family Asteraceae, believed to be a native of the temperate part of the Old World. It is grown mainly for medicinal purposes, as food or fodder or, as is more often the case, for the roots, which are commercially valuable. Chicory is an excellent mild bitter tonic for the liver and digestive tract; therefore, its extract forms an important constituent in liver medicines like Liv-52 and Geriforte. The cultivated plant is also used for curing diarrhoea, enlargement of the spleen, jaundice, fever, and vomiting. Juice of the plant is used in the treatment of uterine cancer and tumours. Leaves and roots are important for curing mouth, breast, and face cancer (Hartwell 19671971). Dried root powder is used for adulteration in coffee. Conventional
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