模拟长期大风胁迫对霸王叶解剖结构特征的影响
古力米热·热孜;赵晓英;原慧
【期刊名称】《西北植物学报》 【年(卷),期】2012(032)010
【摘要】以乌鲁木齐市达坂城长期大风区的优势种灌木霸王为研究对象,采用盆栽实验的方法,设置小风3 m/s、中风7 m/s、大风12m/s以及对照(自然风速),选择持续吹风90 d的霸王叶采用石蜡切片法对其叶解剖结构特征进行比较观察.研究表明:与对照组(平均风速0.3 m/s)相比,在12m/s风速下,霸王叶厚度增加了48％；在模拟大风、中风、小风(12、7和3 m/s)下,叶表皮厚度分别较对照增加了213％、117％和45％,栅栏组织排列紧密,其厚度分别增加了110％、70％和47％；在大风和中风(12和7 m/s)风速下,叶脉厚度分别增加了109％和76％.研究认为,模拟长期大风胁迫下,霸王叶通过增加叶片厚度即叶表皮层、栅栏组织及叶脉厚度来减少风对它的机械损害和水分散失.%In this paper, ZygophyHum xanthoxylum which is dominant species shrub of Urumqi Da-bancheng chronic high wind area was used as a study object. Through pot experiment? design three wind speed (light wind:3 m/s, medium wind 7 m/s,high wind: 12 m/s),on Zygophyllum xanthoxylum sustained wind treatment 90 d,leaf anatomical structures were analyzed with paraffin sectioning method. The results showed that,compared with control group(mean wind speed 0. 3 m/s),in the 12 m/s wind thickened of leaf thickness 48%? 12 m/s, 7 m/s and 3m/s wind increased cuticle thickness of 213%,117% and 45 %, respectively;
模拟长期大风胁迫对霸王叶解剖结构特征的影响
