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首页> 外文期刊>Journal of Botany >Effects of pH, Photoperiod, and Nutrient on Germination and Growth ofCalymperes erosumC. Muell. Gemmaling
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Effects of pH, Photoperiod, and Nutrient on Germination and Growth ofCalymperes erosumC. Muell. Gemmaling

机译：pH值，光周期和营养物对Calymperes erosumC发芽和生长的影响。 Muell。杰玛灵

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摘要

Effects of pH, photoperiod, and substrate nutrient concentration on the rate of germination of the gemmae and primary protonema growth ofCalymperes erosumC. Muell. were studied. There was a statistically significant difference in germination ofC. erosumgemmae and protonema growth among the different substrate pH levels, photoperiod treatments, and substrate nutrient conditions, respectively (P<0.01). Gemmae germination and protonemal growth peaked at pH 4 and 5. Protonemal growth was retarded at pH 2, 3, 6, and 7. No germination was observed in continuous darkness. Germination and protonema growth increased significantly (P<0.01) within the first 3 and 6 hours of daylight but not again until after 9 and 12 hours of exposure, respectively. No statistical (P>0.05) increase in germination and protonemal growth was observed when the nutrient concentration was increased from 25% to 200%. Results indicate the moss is adapted to low nutrients and that it may germinate well at substrate pH as low as 2 howbeit the probability of establishment will remain limited until pH levels improve to 4 or 5. Furthermore, the moss is able to achieve net photosynthetic carbon gain during morning hours. Recovery from photoinhibition is likely by evening.
机译：pH，光周期和底物养分浓度对erosumC胚芽萌芽率和初生质子生长的影响。 Muell。被研究了。 C的萌发有统计学上的显着差异。在不同底物pH水平，光周期处理和底物营养条件下，皮炎菌和原生质体分别生长（P <0.01）。在pH 4和5时，胚芽萌发和原生质体生长达到峰值。在pH 2、3、6和7时，胚体生长受阻。在连续黑暗中未观察到发芽。在日光的最初3个小时和6个小时内，发芽和原生质体的生长显着增加（P <0.01），但分别在暴露9个小时和12个小时后才再次增加。当营养物浓度从25％增加到200％时，未观察到发芽和前质体生长的统计增长（P> 0.05）。结果表明，苔藓适合低养分，在低至2的底物pH下可能发芽良好，但是在pH值提高到4或5之前，建立的可能性仍然有限。此外，苔藓能够获得净光合碳在早上工作。从光抑制中恢复可能要到晚上。

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