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Physiological Characteristics of Poplar Clones in the Saemanguem Reclaimed Land

机译:Saemanuguem再生土地杨树克隆的生理特征

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摘要

This research aims to study the physiological characteristics of poplar clones in Saemanguem reclaimed land where has lower minerals and bad drainage than those in paddy field. In July and August, different poplar clones including Populus euramericanaclone (Venziano and L.Avanzo) and deltoides hybrid clone (97-18 and 97-19) showed different physiological characteristics. Physiological characteristics of P. euramericana clones were better than those of P. deltoides hybrid clones. Especially, the average net photosynthetic rate (Anet) of clone Venziano were 18.62 umol CO2 m"2-s"' and 17.11umol CO2 m"2-s"', respectively. Those were the highest numerical values among other poplar clones. On the other, the total chlorophyll and carotenoid contents of P.deltoides hybrid clones were higher than those of P. euramericana clones in July. Particularly, the total chlorophyll content of clone 97-18 was 2.37 mg ? g"'FW. In August, those of P. deltoides hybrid clones decreased than in July. In term of the physiological activity such as net photosynthetic rate and stomatal conductance of P. deltoides hybrid clones were much lower in August than in July. As a result, physiological characteristics of P. euramericana Venziano clone was superior than the other clones in Short rotation coppice (SRC) in Saemanguem area.
机译:本研究旨在研究沙伊曼古姆复垦地杨树无性系的生理特性。沙伊曼古姆复垦地的矿物质含量较低,排水性较差。7月和8月,不同的杨树无性系,包括欧美杨无性系(Venziano和L.Avanzo)和三角洲杂种无性系(97-18和97-19)表现出不同的生理特性。欧美侧柏无性系的生理特性优于美洲侧柏杂交无性系。尤其是克隆文齐亚诺的平均净光合速率(Anet)分别为18.62μmol CO2 m“2-s”和17.11μmol CO2 m“2-s”。这是其他杨树无性系中数值最高的。另一方面,在7月份,三角肌杂种无性系的总叶绿素和类胡萝卜素含量高于欧美无性系。尤其是无性系97-18的总叶绿素含量为2.37mg?在8月份,美洲黑杨杂种无性系的净光合速率和气孔导度等生理活性均比7月份低,因此,美洲黑杨无性系在短轮伐期(SRC)的生理特性优于其他无性系在塞曼盖姆地区。

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