Synthetic seed technology is an alternative to traditional micropropagation for production and delivery of

cloned plantlets. Synthetic seeds were produced by encapsulating nodal segments of

C. angustifolia

in

calcium alginate gel. 3% (w/v) sodium alginate and 100 mM CaCl

2

∙

2H

2

O were found most suitable for

encapsulation of nodal segments. Synthetic seeds cultured on half strength Murashige and Skoog medi

-

he methanolic extracts of

Citrullus colocynthis, Rhazya
 

stricta,

Datura

stramonium

and

Zygophyllum coccineum

were evaluated for the antimicrobial activity

against

Pseudomonas aeruginosa

ATCC 27853,

Escherichia coli

ATCC 25922,

Staphylococcus aureus

ATCC 25928,

Streptococcus pyogenes

grp A (clinical isolate),

Bacillus subtilis

ATCC 6633 and

Candida albicans

ATCC 10231

.

The extract of different