Low dosages of gamma irradiation of seed increase the growth and yield of two cultivars of sunflower
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Seeds of cv. Restoler and Noor of sunflower (Helianthus annuus L.) were subjected to 0.5 to 50 krad 60Co gamma radiation (1 rad = 10 mGy) and grown to maturity in a greenhouse. Two low dosages, i.e., 1 krad in cv. Restoler and 3 krad in cv. Noor, caused statistically significant stimulation of vegetative growth and seed yield (both total number and weight). For cv. Noor, 3 krad also significantly stimulated the weight of an individual seed. Significant declines in the yield of mature seeds occurred only at critical dosages of > 10 to 20 krad.
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2015 ◽
Vol 7
(2)
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pp. 25-30
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1987 ◽
Vol 16
(2)
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pp. 157-175
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2016 ◽
Vol 7
(1)
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pp. 53-63
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2012 ◽
Vol 3
(4)
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pp. 483-494
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