Giovanna Campos Mamede Weiss de Carvalho, D. Siqueira, Renata de Deus Silva, Maria Kalyane Farias da Silva, D. G. Barroso
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引用次数: 0
摘要
背景:尽管网状白腹在林业和生态方面具有重要意义,但由于其繁殖体不定根率低,该物种的无性繁殖方案尚不清楚。在此基础上,本研究旨在对网青苗苗材料的生根过程进行评价,并提出以下假设:(1)不同时期在雾室中维持繁殖体对生根过程有影响;(2)由于根系的限制,小桩管理制度影响了小插条的产量和无性系幼苗的质量。结果:在雾室中诱导生根不超过30天。生根率在生根后50 d达到最高。在280 cm 3的悬浮苗床和试管中设置的迷你花园,在270天的探索(每月收集)中,平均迷你插枝产量分别为4.32和2.06。在木桩后120天,克隆苗的存活率和最终质量没有差异。而管培园无性系幼苗的株高、叶面积和一级根数均高于管培园无性系幼苗。在不同的迷你园管理下,无性系幼苗生产指数均为50%。结论:利用微切技术育苗是可行的。
Mini-cutting of Plathymenia reticulata benth. with ministumps conducted in suspended seedbed and tubes
Background: Despite the importance of Plathymenia reticulata for forestry and ecological purposes, a protocol for the vegetative propagation of the species remains unclear mainly due to the low adventitious rooting of the propagules of the species. In this sense, this work aimed to evaluate the rooting of minicuttings of juvenile materials of P. reticulata and our hypothesis: (1) maintaining propagules under mist chamber for different periods affects the rooting process; (2) the mini-stump management system due to the restriction of the root system affects the production of mini-cuttings and the quality of clonal seedlings. Results: It was not necessary for more than 30 days in a mist chamber to induce rooting. The highest percentage of rooting was obtained 50 days after staking. Mini-gardens set up in suspended seedbed and tubes (280 cm 3 ) had the average mini-cuttings productivity of 4.32 and 2.06, respectively, over 270 days of exploration (monthly collections). At 120 days after staking, there was no difference in the survival and in the final quality of clonal seedlings produced. However, clonal seedlings from minigarden in tubes had higher height, leaf area, and number of first-order roots. Regardless of the minigarden management, the clonal seedling production index was 50%. Conclusion: We can conclude that P. reticulata seedling production via mini-cutting technique is possible.
期刊介绍:
Cerne is a journal edited by the Federal University of Lavras, Minas Gerais state, Brazil, which quarterly publishes original articles that represent relevant contribution to Forestry Science development (Forest ecology, Forest Management, Silviculture, Technology of Forest Products).