Chrysanthemum plantlet growth with photosynthetic photon flux and electrical conductivity treatments in a microponic system culture
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摘要: 采用微型水培技术，研究了不同光照强度和营养液电导率对菊花Chrysanthemum morifolium苗生长的影响。结果表明，菊花营养液在高光照强度条件（250 molm-2s-1）下，pH值和电导率有显著变化，高光照强度和高营养液电导率（3.0 mScm-1）条件下，菊花苗地上部分和地下部分、整株的鲜质量、干质量以及株高、根长及新叶数显著大于其他处理。菊花苗在高光照强度下的光合速率、蒸腾速率和气孔导度也显著高于中（100 molm-2s-1），低（50 molm-2s-1） 光照强度处理。可见，高光照强度和高营养液电导率有利于微型水培菊花苗的培养。图5表1参11Abstract: The effects of photosynthetic photon flux（PPF） and electrical conductivity（EC） in a nutrient solution on growth of Chrysanthemum morifolium plantlets using a microponic system were studied. Results showed that with high PPF （250 molm-2s-1），the pH and EC value of the nutrient solution changed significantly. Compared to the other two treatments（0.8 and 1.6 mScm-1 of EC，50 and 100 molm-2s-1 of PPF），a high PPF（250 molm-2s-1） and EC （3.0 mScm-1） increased fresh weight，dry weight，shoot length，root length，and number of new leaves. Also，compared to the two lower PPF treatments（50 and 100 molm-2s-1），with the high PPF，CO2-uptake，stomatal conductance，and transpiration in leaves were higher. Thus，a high PPF and EC value for the nutrient solution was favorable for the growth of Chrysanthemum morifolium plantlets in a microponic system culture.［Ch，5 fig. 1 tab. 11 ref.］
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https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2010.04.013
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