A total of 447 accessions consisting of seven Brassica spp.; Brassica carinata (34), B. juncea (199), B. rapa subsp. dichotoma (18), B. rapa. subsp. oleifera (14), B. rapa subsp. rapa (36), B. rapa subsp. trilocularis (56) and B. alba subsp. alba (90) were studied for their morphological characters and fatty acid compositions. There was a wide variation for morphological traits, oil content and fatty acid composition among Brassica species. Seed number/silique and yield/plant were varied from 4.2 (B. alba) to 25.1 (B. rapa subsp. trilocularis) and from 170.7 g (B. rapa subsp. oleifera) to 351.9 g (B. juncea L. Czern.), respectively. Among Brassica species, B. rapa subsp. trilocularis exhibited the highest oil (29.2%), stearic (20.4%) and erucic acid (45.3%) content. B. carinata had the highest content of palmitic (5.2%), oleic (21.2%) and linolenic acid (11.1%). B. rapa subsp. dichotoma and B. rapa subsp. oleifera exhibited the highest content of linoleic (8.1%) and behenic (26.9%) acid, respectively. B. rapa subsp. trilocularis exhibited the highest (45.3%) erucic acid content and significant positive relationship was observed between oleic acid and linoleic acid. This variation of agronomic and fatty acid compositions in Brassica species can be utilized to develop new varieties.

Abstract
 Introduction
 Materials and Methods
  Plant materials
  Observation on agronomic characters
  HPLC analysis for fatty acids
  Statistical analyses
 Results and Discussion
  Variation in oil compositions
  Correlation among the agronomic characters
  Relationship among fatty acid compositions
  PCA on agronomic characters and fatty acid compositions
 References

• Ho-Cheol Ko(National Agrobiodiversity Center, NAS, RDA)
• Jung-Sook Sung(National Agrobiodiversity Center, NAS, RDA)
• Hyung-Jin Baek(National Agrobiodiversity Center, NAS, RDA)
• Hyung-Jin Baek(National Agrobiodiversity Center, NAS, RDA)
• Myung-Chul Lee(National Agrobiodiversity Center, NAS, RDA)
• Binod Prasad Luitel(National Agrobiodiversity Center, NAS, RDA, Horticulture Research Station, Nepal Agricultural Research Council (NARC))
• Kyoung-Yul Ryu(Korea Program on International Agriculture Div. Technology Cooperation Bureau, RDA)
• Ju-Hee Rhee(National Agrobiodiversity Center, NAS, RDA) Corresponding author