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- W2405766029 abstract "A method of percussive wave treatment of seeds, promoting activization of physiological processes in plants, was proposed. The influence of physical treatment on cell nuclei and phytohormones was investigated. We examined dynamics of mitotic indices (MI) of the root meristems of buckwheat seedlings 48-58 h after the treatment. The seeds were treated with pressures of 11, 23, 29 MPa. The synchrony of cell divisions was estimated according to the augmentation of maximum MI versus average MI. The maximum and the average MI of control seedlings was 9.6 and 8.1%, resp. After the treatment with the pressure of 11 MPa the average MI increased by 2.6 times, and synchrony raised by 50%. After the treatment by the pressure of 23 MPa the average value of MI did not change versus the control, but the synchrony enhanced by 2.8 times. After the treatment of the pressure of 29 MPa the average MI decreased by 31%, the synchrony increased by 33%. Examination of phase indexes allowed to reveal the damage of cytotomy, transition to metaphase, and mitotic apparatus formation. The MI of root meristems of the test seedling aged 8 days topped the control by 21, 156 and 20%. So, the pressure of 11 MPa promoted MI increase in 2 days, and those of 23 and 29 MPa in 8 days. The investigation of hormone balance allowed to detect a raising level of abscisic acid. Its influence on the plant growth depends on the content of zeatin. A hypothetical model of plant reaction mechanism was proposed, based on the obtained results. A momentary pressing in the percussive wave was a stressor, promoting the accumulation of ABA and growth rest, that changed for an active growth induced by zeatin." @default.
- W2405766029 created "2016-06-24" @default.
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- W2405766029 date "2000-01-01" @default.
- W2405766029 modified "2023-09-23" @default.
- W2405766029 title "[Dynamics of mitotic index of buckwheat root meristems, developing from seeds subjected to percussive wave treatment]." @default.
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