Indian Society of Genetics & Plant Breeding

Induction ot polyploidy in Pride-ot-India (Melia azedarach Linn), an agrotorestry tree

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Polyploidy was induced in Pride-of-India (Melia azedarach
Linn) a small tree grown as a hedge plant and is important
for agroforestry having timber, fodder and therapeutic and
insecticidal uses. Colchicine 0.5% treatment for 3
consecutive days to shoot apices of three to four day
old seedlings was effective. Polyploid plants have smaller
leaves with dark green, thick and overlapped leaflets,
larger stomata, smaller inflorescence, reduced pollen
fertility and less number of drupes than that of diploids.
They achieved faster growth in three-and-a-half years.
Anther squashes of the two polyploid C1 plant showed
chromosome number of 2n = 56 in the polyploids as
against 2n = 28 in diploid.

Keywords: Pride-ot-India, Melia azedarach, induced polyploidy, colchicine


Year: 2002
Volume: 62
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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