Senescence can be viewed as a developmental change that leads to the death of plant tissues. Naturally senescence is generally accepted being genetically programmed. Petals are floral organs which primarily determine commercial longevity flowers and consequence, it necessary study physiological, biochemical genetic processes occur during floret senescence. Most early work on flower focused ethylene sensitive flowering plants. It has also been reported lipid peroxidation membrane damage...

Floriculture has become an important industry in many countries as a result of advanced scientific techniques and stable supply improved varieties.Development new varieties their fast marketing are major challenges floriculture trade.Rose is grown mainly for cut flowers industry.All the present-day colourful novelties extensive random hybridization, spontaneous induced mutations selections.Voluminous literature now available on rose breeding using different technology.Here we highlight how...

A stable NaCl-tolerant mutant (R1) of Chrysanthemum morifolium Ramat has been developed by in vitro mutagenesis with gamma radiation (5 gray; Gy). Salt tolerance was evaluated the capacity plant to maintain both flower quality and yield under NaCl stress. Enhanced salt R1 attributed increased activities reactive oxygen species (ROS)-scavenging enzymes, namely superoxide dismutase (SOD), monodehydroascorbate reductase (MDAR), dehydroascorbate (DHAR) glutathione (GR), reduced membrane damage,...

Flowers of Chrysanthemum morifolium Ramat cv. Lalima were greyed red and florets flat spoon shaped. Ray after inoculation on the Murashige Skoog's medium supplemented with 1.07 μM α-naphthaleneacetic acid 8.87 benzyladenine irradiated γ-radiation (0.5 Gy 1 Gy). All regenerated shoots either from control or γ-irradiated isolated, rooted transplanted in field hardening. Two mutants obtained plants Both yellow coloured but one having shaped ray similar to original cultivar, while other tubular...

Direct somatic embryogenesis from ray floret explants of five chrysanthemum cultivars has been obtained within 12 - 15 d on Murashige and Skoog medium supplemented with 2,4-dichlorophenoxyacetic acid (2,4-D) 6-benzyladenine (BA). Scanning electron microscopic observation also confirmed the direct origin embryos explants. Somatic developed asynchronously adaxial surface Among tested, Birbal Sahani was best responding (40 % responded 4 mg dm-3 2,4-D 2 BA medium). Precocious germination noticed...

One NaCl-tolerant chrysanthemum (Chrysanthemum morifolium Ramat.) variant (E2) has been developed in a stable form through IN VITRO mutagenesis using ethylmethane sulfonate (EMS) as the chemical mutagen. Salt tolerance was evaluated by capacity of plant to maintain both flower quality and yield under stress conditions. Enhanced E2 attributed increased activity superoxide dismutase (SOD), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), and, lesser extent membrane damage than...

Abstract Rooted cuttings of Dendranthema grandiflorum cv. ‘Puja’ were treated with different doses gamma rays. Sectorial somatic mutations both in flower colour and shape detected all the doses. The original floret is red‐purple florets are flat spoon shaped. One mutant was yellow‐orange another tubular florets. Original mutated ray cultured on agar‐solidified Murashige Skoog basal medium supplemented sucrose combinations 1‐naphthaleneacetic acid (NAA) 6‐benzylaminopurine (BAP). Direct shoot...

SummaryThe main bottleneck of mutation induction in vegetatively propagated ornamentals is the development chimera. Ephemeral small sectors apparent on petals cannot generally be recovered as solid mutant shoots. An efficient technique has been standardized present experiment for direct shoot regeneration from individual florets of...chrysanthemum (Chrysanthemum morifolium Ramat.) cv. Colchi Bahar. The efficiency was tested 16 media based MS basal medium containing sucrose, agar and...