%0 Journal Article
%T 种基盘对侧柏幼苗根系形态和生理特性的影响<br>Effect of Seed-base Technique on the Root Morphological and Physiological Properties of Platycladus orientalis
%A 冯志培
%A 赵佳宝
%A 孔玉华
%A 闫东锋
%A 杨喜田
%J 西北林学院学报
%D 2015
%R doi:10.3969/j.issn.1001-7461.2015.03.19
%X 以种基盘侧柏播种苗为试验材料，普通营养钵侧柏播种苗为对照，测定播种后第20、40、60、80、100天的根系形态和生理指标。结果表明：在试验阶段，种基盘能显著提高侧柏幼苗平均根尖数、平均表面积、根系密度（p<0.05），但根系平均直径较对照小；种基盘可以显著提高侧柏幼苗的根系活力、可溶性糖和可溶性蛋白（p<0.05）。2种处理根系的形态指标（根尖数、根系表面积和根系密度）和生理指标（根系活力、根系可溶性糖和可溶性蛋白）之间均表现出显著的相关性（p<0.05），而种基盘播种苗的根系直径与根系密度及可溶性蛋白的相关性不显著。逐步回归分析显示，种基盘播种苗根系表面积的大小对根系活力的强弱起决定性作用；根尖数的大小则对根系活力、根系可溶性糖和可溶性蛋白含量有显著影响。<br>The seed-base seedlings and ordinary container of Platycladus orientalis were selected as test materials. The root morphological and physiological properties were measured on the 20th, 40th, 60th, 80th and 100th day, respectively after seeding. The results showed that the seed-base technique significantly increased root tips, surface area, root density (p<0.05) during the experimental period, but the average diameter was smaller than ordinary container of P. orientalis. Furthermore, the seed-base technique could also significantly improve the root activity, soluble sugar and soluble protein contents (p<0.05). Root morphological properties, such as root tips, root surface area and root density had positive correlation with root physiological characteristics, i.e. root activity, root soluble sugar and root soluble protein for the both seedlings(p<0.05). However, average root diameter of seed-base technique had no significant relationships with root density and root soluble protein. The stepwise regression analysis indicated that root surface area played a decisive role for the variations of root activity of seed-base seedlings. Root tip numbers played decisive effects for root activity, root soluble sugar and root soluble protein
%K 种基盘
%K 侧柏
%K 根系形态
%K 根系活力
%K 可溶性糖
%K 可溶性蛋白&lt
%K br&gt
%K seed-base technique
%K Platycladus orientalis
%K root morphological property
%K root activity
%K soluble sugar
%K soluble protein
%U http://xblxb.paperopen.com/oa/darticle.aspx?type=view&id=201503019