n g k , Sudhir S h u k l a , K . R. K l z a n n a , B . S. D i x i t a n d R . B a n c r j i "
Win s e d he B n [ ! ' s o p h our r p 1l.s terrrcgon d o h [ i s ( L . ) D <' I is an iinpcirtant piilse as well as vegetablc crop grown over 70 countries. f3eing rich in protein and fat. i t is an altern ii t iv c s o u r ce o f m a I n u t r i t i o 11 i n tl e v c I o p i ng c o ii n t r i c s particularly for vegetarians. The seeds contain a b o u t 34% piotein a n d 1 X % oil'-". The oil has palatable t'lavour and resemble with mustard oil in appearance' while the fatty acid profile is similar to soybean m d peanut o i l ' . The o i l contains about 71 7;) unsaturated fatty acid with major compo\ition of olcic acid (C1Y:l) and linoleic acid (C18:2). The C18:l is very suitable t o cooking and salad and C1S:2 is beneficial in lowering the blood cholestdrol in human system. The studies made so far on oil and fatty acid profile in winged bcan are based either on bulk population"^' o r o n very limited genotypes' '. The present study was, therefore, undertaken on large and genetically improved genotypes to isolate cultivars with desired/altered fatty acid composition a n d further t o confirm the presence o f parinaric acid (ClX:4). an a n t inutritional factor, i n winged bean'.
M a t e r i a l s a n d M e t h o d s
A laree population o f different eco-geographical origin' was subjected to selection for pure line genotypes during 1986-87 to 1988-89. Among these 19 distinct genotypes (Table ) were selected on the basis of different morphological a n d economical traits and werc grown in randomised block design with three replications in lY89- 90 undcr normal cultural conditions at National Rotanical Research Institute. Lucknow, India (26.45" W and 80.50" t). Fully matured seeds of each cultivar was subjected for chemical estimation. The oil from winged bean seed powder was extracted * Authors' addresses: S. f! Singh. Sitdhir Shuklrr onti K . R. K h m n u . Deparlnient of Plant Brecding a n d Genetics. N otional Botanical Research Institute, Lucknow-226 001. India; n. S . Din-tr and Dr. R. Banerji, D e p a r t m e n t of Phytochemistry, National Botanical Research Institute. Kana Pratap Mai-g, P. B . No. 136, Lucknow-226001, India.
Fa1 sct l e c l l n l l l 97 JJllrf'mg h r 11 I 0 ' ~i