Effects of growth retarding compounds on chlorophyll accumulation and nitrate reductase activity in nitrate induced cucumber cotyledons
2015 ◽
Vol 42
(3)
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pp. 431-439
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Keyword(s):
Amo 1618
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Cotyledons were excised from 5-day old etiolated cucumber seedlings and .grown for 24 or 48 h in solutions of plant growth retardants: AMO-1618,B-Nine, CCC and phosfon D, supplemented with KNO<sub>3</sub> (10<sup>-2</sup>M) in light. Nitrate reductase (NR) activity was determined <i>in vivo</i>. CCC and Phosfon D at high concentrations had no effect on nitrate reductase activity in 24 h tests. CCC at 5xl0<sup>-2</sup> M enhanced NR activity in longer 48 h tests; Phosfon D was inhibitory in that case. AMO-1618 markedly decreased NR activity. B-Nine strikingly enhanced NR activity in KNO<sub>3</sub> induced cytoledons; the effect was positively correlated with the concentration of B-Nine. Ali the compounds inhibited chlorophyll synthesis.
1983 ◽
Vol 30
(1)
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pp. 25-32
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Keyword(s):
Keyword(s):
1978 ◽
Vol 58
(2)
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pp. 283-285
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2011 ◽
Vol 183-185
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pp. 900-904
Keyword(s):
1989 ◽
Vol 69
(3)
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pp. 919-923
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1986 ◽
Vol 104
(3)
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pp. 367-372
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1983 ◽
Vol 178
(2-3)
◽
pp. 131-138
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