Effect of Low Relative Humidity during Tomato Seedlings Growth on Quality of Their Cuttings under Low-temperature and Dim-light Storage
Effect of Low Relative Humidity during Tomato Seedlings Growth on Quality of Their Cuttings under Low-temperature and Dim-light Storage
复制标题
低温暗光贮藏下番茄幼苗生长过程中低相对湿度对插条品质的影响
DOI：
10.2525/ecb1963.41.381
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Kiyota
中科院分区：
文献类型：
--
作者：
Ryoko Terakura;T. Shibuya;Y. Kitaya;M. Kiyota
番茄 (Lycopersicon esculentum Mill., cv. Momotaro) 幼苗在 70% 或 10% 相对湿度 (RH) 下生长 10 天。然后将具有3-4片叶面和2个子叶的插条在10•Ž的空气温度、光合光子通量密度4πmol m-2s-1、相对湿度95%以上的条件下保存28 d。贮藏期间，营养液通过茎切端供给插条。贮藏前，10%RH下生长的幼苗插条含水率明显低于70%RH下生长的幼苗。然而，相对湿度对插条的干重、茎长、茎粗、叶面积和观叶叶的相对叶绿素含量没有影响。开始储存后，在10%RH下生长的幼苗插条未观察到枯萎现象；相比之下，在 70% RH 条件下生长的幼苗插条观察到枯萎现象。在储存的最后一天（第28天），在10%相对湿度下生长的幼苗的可销售插条的百分比为100%，而在70%相对湿度下生长的幼苗的可销售插条的百分比为5%。这些结果表明，与 70% RH 相比，番茄幼苗生长期间 10% RH 降低了插条的环境压力，并降低了开始储存后适销性较差的插条的百分比。
Tomato (Lycopersicon esculentum Mill., cv. Momotaro) seedlings were grown in 70% or 10% relative humidity (RH) for 10 d. Then, their cuttings with 3-4 foliage leaves and two cotyledons each were stored for 28 d in air temperature of 10•Ž with photosynthetic photon flux density of 4ƒÊmol m-2s-1 and RH of more than 95%. Nutrient solution was supplied to the cuttings through the stem cut-ends during storage. Before storage, the percentage of water content of cuttings from seedlings grown in 10% RH was significantly lower than those from seedlings grown in 70% RH. However, RH had no effect on the cuttings' dry weight, stem length, stem diameter, leaf area, and relative chlorophyll content of the foliage leaves. After beginning storage, no wilting was observed in the cuttings from seedlings grown in 10% RH; in contrast, wilting was observed in the cuttings from seedlings grown in 70% RH. On the last day of storage (Day 28), the percentage of marketable cuttings from seedlings grown in 10% RH was 100%, whereas those from seedlings grown in 70% RH was 5%. These results indicate that 10% RH during tomato seedlings growth reduced environmental stress of their cuttings, and decreased the percentage of less marketable cuttings after beginning storage, in comparison with 70% RH.