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采用油菜素内酯(BR)诱导二叶一心期和五叶一心期番茄幼苗,研究BR诱导后低温胁迫对番茄膜幼透苗性抗,冷减性少相叶关片生中理丙指二标醛的的影含响量。,可在溶5~性10糖℃和低脯温氨胁酸迫的条含件量下明,不显同升浓高度,同B时R处增理加,了可幼降苗低的幼根苗系叶活片力细,提胞高幼苗抗冷性。研究表明,低温条件下,五叶一心期对番茄幼苗喷施0.1mg/LBR,其冷害指数可比对照降低32.7%,电导率比对照降低58.4%,丙二醛含量最少,仅为25.5649nmol/g,溶性糖含量最高,达到137.27μmol/g,脯氨酸含量最高,为542.3μg/g,同时幼苗的根系活力变化较平稳,变化幅度仅为20.9%。
Brassinosteroids (BR) were used to induce seedlings of two-leaf and one-leaf-one-heart. The effects of low temperature stress after BR on tomato seedlings were studied. The standard aldehyde shadow volume. , Can dissolve 5 ~ 10 sugar ℃ and low temperature resistant ammonia stress forcing the amount of bar Ming Ming, not significant the same ascended height, with B when the RB R add plus, young seedlings can be young seedlings Department of leaf activity films thin, high seedling seedling cold resistance. The results showed that under the condition of low temperature, spraying 0.1mg / LBR on tomato seedling in five leaf stage, its chilling injury index decreased by 32.7%, the conductivity was reduced by 58.4% and the content of malondialdehyde was only 25.5649nmol / g , The highest content of soluble sugar reached 137.27μmol / g and the highest content of proline was 542.3μg / g. At the same time, the root activity of seedlings changed more smoothly, with a change of only 20.9%.