Response of Datura innoxia Linn. to Gamma Rays and Its Impact on Plant Growth and Productivity

被引：14

作者：

Aref I.M. ^{[1
]}

Khan P.R. ^{[1
]}

Al Sahli A.A. ^{[2
]}

Husen A. ^{[3
]}

Ansari M.K.A. ^{[4
]}

Mahmooduzzafar ^{[4
]}

Iqbal M. ^{[4
]}

机构：

[1] Department of Plant Production, College of Food & Agricultural Sciences, King Saud University, PO Box 2460, Riyadh

[2] Department of Botany & Microbiology, College of Science, King Saud University, PO Box 2455, Riyadh

[3] Department of Biology, College of Natural and Computational Sciences, University of Gondar, P.O. Box 196, Gonder

[4] Department of Botany, Jamia Hamdard, Hamdard Nagar, Tughlaqabad, 110062, New Delhi

来源：

Proceedings of the National Academy of Sciences, India Section B: Biological Sciences | 2016年 / 86卷 / 3期

关键词：

Gamma rays; Hormesis; Hyoscyamine; Seed germination; Seedling growth;

D O I：

10.1007/s40011-014-0485-6

中图分类号：

学科分类号：

摘要：

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 (PN), stomatal conductance (gs) and the chlorophyll and carotenoid 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. © 2015, The National Academy of Sciences, India.

引用

页码：623 / 629

页数：6

共 33 条

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