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The effect of phytohormones on Amaranthus caudatus seed germination, beta-amylase activity and sugar content

100%

Bialecka B., Kepczynski J.

Polish Journal of Natural Sciences. Supplement

2003

tom 01

Effect of nitrogen fertilization on the amylase activities in potato tubers

84%

Mioduszewska H.

Acta Physiologiae Plantarum

1994

tom 16

nr 4

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Germination, alpha-, beta-amylase and total dehydrogenase activities of Amaranthus caudatus seeds under water stress in the presence of ethephon or gibberellin A3

67%

Bialecka B., Kepczynski J.

Acta Biologica Cracoviensia. Series Botanica

2010

tom 52

nr 1

7-12

Amaranthus caudatus L. seed germination was studied under different levels of water deficit induced by PEG 6000 in laboratory conditions. PEG at osmotic potentials -0.2 to -0.3 MPa at 24°C in darkness delayed germination and reduced final germination percentage. PEG solutions at osmotic potential lower than -0.3 MPa almost totally blocked seed germination. Ethephon was much more effective than GA3 in reversing PEG-caused inhibition of A. caudatus seed germination. PEG decreased α-amylase activity after 14 h incubation. It decreased β-amylase activity after 14 and 20 h, and caused an increase in total dehydrogenase activity only after 20 h of incubation. Unlike GA3, ethephon increased α-amylase activity in seeds after 12 and 14 h of incubation under water deficit. After 20 h of incubation there was no difference in α-amylase activity in any of the treatments. Neither ethephon nor GA3 affected the activity of β-amylase and dehydrogenase.

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Physiologiae Plantarum

1 Polish Journal of Natural Sciences. Supplement

2 Bialecka B.

2 Kepczynski J.

1 Mioduszewska H.

1 2010

1 2003

1 1994

Wyniki wyszukiwania

The effect of phytohormones on Amaranthus caudatus seed germination, beta-amylase activity and sugar content

Effect of nitrogen fertilization on the amylase activities in potato tubers

Germination, alpha-, beta-amylase and total dehydrogenase activities of Amaranthus caudatus seeds under water stress in the presence of ethephon or gibberellin A3