DefinePK

Abstract

The present work was aimed to study the effectiveness of different doses of Gamma radiations (5 Krad, 15 Krad, 25 Krad, 35 Krad and 45 Krad) on days to germination, days to flowering, plant height, number of branches/plant, number of siliqua/plant, number of seeds/siliqua, siliqua length, 1000-seeds weight, oil, glucosinulates, moisture, proteins, oleic acid, linolenic acid and erucic acid contents. The results showed that Gamma radiation has no significant effect on days to germination and days to flowering. However, at 5 Krad and 15 Krad enhanced germination (5 days) as compared to control (7 days), while days to flowering were delayed (110 days) in higher dose (45 Krad) as compared to control (96 days). A significant decrease was noticed in plant height (97.6cm) and number of siliqua/plant (101) compared to control (101.8 cm and 150). Higher dose (45 Krad) enhanced number of branches/plant (5), number of seeds/siliqua (27) and siliqua length (5.14 cm) as compared to control (4, 25 and 4.7 cm). On the other hand higher doses of radiation decreased oil contents (49.2%), protein contents (21.3%), oleic acid (61.4%) and erucic acid (19.7%) compared to control (51.6%, 29.0%, 67.1% and 21.5% respectively). A considerable increase was noticed in glucosinulates (16.1 %), linolenic acid (11.5 %) and moisture (5.5%) contents as compared to control (12.4% and 9.5% and (5.2%) respectively.
Keyword: Brassica; Gamma radiation; Morphological Biochemical characteristics
http://dx.doi.org/10.19045/bspab.2015.42012