Indian Society of Genetics & Plant Breeding

Important

MUTAGENIC RESPONSE IN TWO CULTIVARS OF MORNING GLORY IPOMOEA PURPUREA (L.) ROTH

Published on

Induced mutation studies were carried out in violet blue (VB) and red purple (RP)
cultivars of Ipomoea prpurea, differing markedly in corolla morphology. Chemical
mutagens selected were ethyl methane sulfonate (EMS), sodium azide (SA) and
N-methyl-N'- nitro-N-nitrosoguanidine (NMG). Treatments were administered by
soaking dry, 6 h pre-soaked water (PSW) and 8 h PSW seeds in aqueous mutagenic
solutions. Ml generation seeds were collected capsule wise and sown to raise M2
generation. M2 population was screened for chlorophyll, flower colour and floral
morpological mutations. SA and NMG have induced useful new mutations in both
the cultivars. The differences in the mutagenicity observed in two cultivars has
been attributed to the variations in the microgenomic architecture.
 

Keywords: Ipomea purpurea, mutagene response

Info

Year: 1999
Volume: 59
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

Authors

info_circle

Download PDF