POLYPLOIDY IN FLOWER CROPS
, J.P. YADAV
Journal Title:SCHOLARLY RECSEARCH JOURNAL FOR INTERDISCIPLINARY STUDIES
Polyploidy breeding is an
effective method for doubling the chromosome number of a
species. Genetic variations created can be further used in breeding programme.
breeding holds immense prospects in developing desirable varieties in flower crops.
help of polyploidy
, changes in morphology and cytology of plant are observed. Tetraploids
are more vigorous and larger in size. Tetraploids produce thick and dark green leaves
Mostly seen consequences of induced polyploidy are increase in size and shape of plants;
branches, flower parts, fruit
s and seeds.
Intensification of flower colour and
fragrance is observed in Marigold plants following chromosome number doublin
Chemicals like colchicine, oryzalin,
triXuralin and amiprophosmethyl (APM) etc.
are used in
ion of polyploids.
Although colchicine remained the most used for induction of
Chromosome doubling using various chemicals was observed in flower crops
Marigold, Aster, Orchid, Jasmine, Lillium, Chrysanthemum, Alstromeria,