Response of Datura innoxia Linn. to gamma rays and its impact on plant growth and productivityProc Natl Acad Sci India Sect B Biol Sci (2015)
Dry scarified seeds of Datura innoxia Linn. were gamma-irradiated with 5, 10, 20, 40, 60 and 80 Gy radiation, using a cobalt-60 source at the rate of 0.623 Gy min−1 at room temperature, and germinated on MS-medium in a growth chamber under controlled conditions. Exposure to low dose(s) of radiation (5 Gy) caused stimulatory effect on seed germination. Analysis of 90-day-old seedlings revealed that growth rate of root and shoot, net photosynthetic rate (P N ), stomatal conductance (gs) and the chlorophyll and carotenoids contents increased with 5 Gy radiations. Higher doses proved inhibitory for all the above parameters; the decline observed was positively correlated with increase in intensity of gamma radiation. Intercellular CO2 (Ci), on the other hand, showed an opposite trend, being lower with 5 Gy than in the control, but significantly higher with increased radiation doses. Hyoscyamine, a tropane alkaloid, exhibited only irregular and non-significant variation in its content, with no perceptible change in structure, in the treated material, indicating that gamma-irradiation caused no significant alteration in the quantity or quality of the compound.
Citation Informationbrahim M. Aref, Pervaiz R. Khan, Abdulaziz A. Al-Sahli, Azamal Husen, M. K. A. Ansari, Mahmooduzzafar, Muhammad Iqbal. "Response of Datura innoxia Linn. to gamma rays and its impact on plant growth and productivity" Proc Natl Acad Sci India Sect B Biol Sci Vol. doi: 10.1007/s40011-014-0485-6 (2015)
Available at: http://works.bepress.com/azamal_husen/52/