学术
摘 要:
野蔷薇（Rosa multiflora）实生苗根颈是由幼苗的下胚轴发育而来，幼苗下胚轴的长度决定根颈的长度，因此可以通过调控幼苗的下胚轴长度来达到延长根颈的目的。GA3或遮阳处理野蔷薇幼苗都可促进下胚轴的长度。相比之下，GA3处理延长了幼苗的下胚轴、上胚轴和分蘖枝节间的长度，且对蔷薇苗是致命的；而遮阳处理只有效地延长下胚轴的长度，且适当遮阳有利于幼苗的生长。[著者文摘]
文章出处:
《林业科技》-2007年32卷5期 -56-58页
栏目信息:
文献标识码:
A
文章编号:
1001-9499（2007）05-0056-03
Control on the Length of Root Crown in the Seedling of Rosa Rootstock
LI Zengwu （ Qinghai University, Xining 138000）
Abstract:
The root crown of Rosa multiflora developes the hypocotyl of seedling, and its length is determined by the length of hypocotyl, which shows rootstocks with long root crown can be obtained by elongating the hypocotyl of seedling. Shading the seedling and treading seedling with GA3 are useful for elongating the hypocotyl. Compartively, seedlings treaded with GA3 apparently elongate its hypocotyl and epicotyl and branches, and have fatal effect on survival of seedlings. Whereas, seedlings shaded only elongate its hypocotyl effectively and suitable shading is not harmful to its survival.[著者文摘]
Key words:
Root crown; Rosa multiflora ; Hypocotyl
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