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Updated: 18-07-12 | ||||
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SEED RADIOSENSITIVITY
OF SOME CROPS
Kazi A. Mujeeb
Abstract:
Radiosensitivity estimations utilizing the morphological criterion;
Germination count X Seedl- g height (both percent of control) x
100—seedling performance; were made for
Allium cepa
L.,
Pisum itivum
L. cv. Laxton Superb and Alaska,
Lycopersicon esculentum
Mills cv. Glamour,
Euphorbia gascae
S. 2n and 4n,
Citrullus vulgaris S. cv. Crimson sweet, and
Cucumis sativus L. cv. MR 17. The ctrapolated field performance yielded D50 values (in
Kiloroentgens) of 40.5, 12.0 and 15.3, 40.0, 17.3 id 16.0, 16.0 and 55.0
for the respective crops. Diploid
E. lagascae
was more radioresistant than its traploid. Growth phases (seedling
performance) for all crops were negatively correlated with ascend- g
dosage. This, and the goodness of fit of the respective data to
regression lines were highly significant. Atomic Energy Agricultural Research Centre, Tandojam, Sind, Takistan. |
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