泡桐杂种无性系叶抗旱性的初步研究

A Primary Study on the Drought Resistance of the Blades of Paulownia Hybrid Clones

选定角质层厚，栅栏组织／海绵组织，表面积／体积，细胞密集度等１０项旱性结构的主要指标对２个新培育的泡桐无性系及４个对照泡桐无性系（种）叶进行了观察测定，并对其中的７个定量指标作了单因素方差分析和多重比较。结果表明，６个无性系（种）叶抗旱性从大到小排列顺序依次为；８４１１—１０＞陕桐１号＞陕桐２号＞８４１１—２＞兰考泡桐＞豫杂１号。

Drought resistance of the blades of 2 new cultivating and 4 control paulownia hybrid clones was studied by observing 10 xeromorphic indexes including cuticular thickness,ratio of palisade tissue to mesophyll one,of superficial area to volume,extent of the cell concentration,etc.,of which 7 quantitative indexes were treated with the single factor variance analysis and multiple comparison.The results shows that the order of their drought resistances from strong to weak was 8411-10(Paulownia tomentosa×P.fortunei),Shaantong No.1(P.tomentosa×P.fortunei),Shaantong No.2 (P. tomentost×P.fortunei),8411-2(P.tomentose×P.fortunei),P.elongata,Yuza No.1(P.tomentose×P.fortunei).