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首页> 外文期刊>African Journal of Biotechnology >Exposure to red light, temperature and exogenous gibberellins influenced germination of some winter weeds
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Exposure to red light, temperature and exogenous gibberellins influenced germination of some winter weeds

机译：暴露于红光，温度和外源赤霉素影响某些冬季杂草的发芽

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Red light, temperature and gibberellins are well known for their capacity to induce higher germination in dormant seeds of several plant species. In the current study, we investigated the effect of various temperature?(10, 13, 16, 19, 22 and 25°C)?andgibberellic acid (GA3) and?GA4+7?concentrations (0.1, 1, 10, and 100 uM)?on germination of?Poa annua,?Alopecurus aequalis?and?Stellaria aquatica?seeds incubated under continuous dark or treated with red light pulse of 80 μ mol m-2?s-1red light (660 nm) for 10 min?after 12 h of dark period. We found that incubation temperature and gibberellins (GAs) significantly enhanced seed germination in red light treated seeds, as maximum germination was observed for?A. aequalis?(67.3% at 13°C),?P. annua?(61.3% at 13°C), and?S. aquatica?(42% at 19°C) in such treatments. Exogenous GA4+7?significantly promoted germination of?P. annua?and?A. aequalis?seeds, while GA3?induced higher germination in?S. aquatica?seeds. It was observed that GAs were more effective in the presence of red light as least germination stimulation was recorded for GAs under dark condition and no germination was found in weed seeds at control and 0.1 mM?GA3?and?GA4+7treatments. It?can be?concluded that lower temperature (13°C) and GA4+7?in conjunctions with red light pulse, induced maximum germination in dormant weed seeds.
机译：红光，温度和赤霉素因其在几种植物物种的休眠种子中诱导更高萌发的能力而闻名。在当前的研究中，我们研究了温度（10、13、16、19、22和25°C），赤霉素（GA3）和GA4 + 7（0.1、1、10和100）浓度的影响。 ）在连续暗环境下孵育或用80μmol m-2？s-1红光（660 nm）的红光脉冲处理10分钟后，对'Poa anua'，'Alopecurus aequalis？在黑暗期12小时后。我们发现温育温度和赤霉素（GAs）显着增强了红光处理种子的种子发芽，因为观察到ΔA最大发芽。均沸点（在13°C时为67.3％），ΔP。年金（13℃下为61.3％）和？S。水处理（在19°C时为42％）。外源GA4 + 7显着促进了P的萌发。年鉴和？水母种子，而GA3诱导更高的发芽率。水生种子。观察到在有红光的情况下，GAs更有效，因为在黑暗条件下记录到GAs的发芽刺激最少，在对照和0.1 mM？GA3？和？GA4 + 7处理下杂草种子中未发现发芽。可以推断出较低的温度（13°C）和GA4 + 7与红光脉冲一起导致了休眠杂草种子的最大萌发。

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