COMPARATIVE STUDY ON THE CHEMICAL COMPOSITION OF DIFFERENT VARIETIES AND ADVANCED LINE OF RAPESEED AND MUSTARD (Brassica spp.)

Abstract

An experiment was conducted to study the chemical composition of two released varieties and four advanced line of rapeseed and mustard (Brassica spp.). Among these released varieties and advanced line, the highest grain weight was obtained from (SAU Sarisha-1 x SAU Sarisha-2) x F1 x SAU Sarisha-2 (4.500 g) and lowest grain weight obtained from BARI Sarisha-15 (4.46 g). In case of proximate analysis, the highest protein content and the highest carbohydrate were recorded from (SAU Sarisha-1 x SAU Sarisha-2)-F7 (29.37%) and BARI Sarisha-9 x BARI Sarisha-6 (19.95%) respectively. The oil content of different released varieties and advanced line of mustard and rapeseed varied from 35.81% to 40.58%. (SAU Sarisha-1 x SAU Sarisha-2) x F1 x SAU Sarisha-2 (537.56 kcal/g) contained the highest amount of Gross Energy. The highest amount of calcium content BARI Sarisha-15 (1.09%) and the highest amount of magnesium content (0.61%) were collected from BARI Sarisha-15. The highest amount of saponification value (169.6) and the highest amount of iodine value (108.8) were recorded from BARI Sarisha-14; however, the highest amount of acid value was recorded from (SAU Sarisha1 x SAU Sarisha-2)-F7 (1.78). Erucic acid was in the range of 37.37% to 47.75%, oleic acid was the highest in (SAU Sarisha-1 x SAU Sarisha-2)-F7 contained 17.15%, while BARI Sarisha-9 x BARI Sarisha-6 containd the highest amount of the unsaturated linoleic acid (19.37%) and containd the highest amount of linolenic acids (SAU Sarisha1 x SAU Sarisha-2) x F1 x SAU Sarisha-2 (7.83%). Moreover palmitic acid, stearic acid , arachidic acid and behenic acid were also present in small amount. It may be concluded that, released and advanced line of (SAU Sarisha-1 x SAU Sarisha-2) x F1 x SAU Sarisha-2, BARI Sarisha-15, (SAU Sarisha-1 x SAU Sarisha-2)-F7, BARI Sarisha-14 with appropriate qualitative and quantitative properties in their seed oil contents, can be grown in large scale as they contained the highest amount of different nutrient contents.