竹笋种子萌发及育苗基质研究

IF 0.7 4区 农林科学 Q4 HORTICULTURE Horticultura Brasileira Pub Date : 2022-12-01 DOI:10.1590/s0102-0536-20220406
M. Magnani, J. Cardoso
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引用次数: 1

摘要

摘要:由于个体不断撤离其自然区域,“chapéu-de-frade”甜瓜的种群数量出现了惊人的下降。zehntneri种子发芽率低,再加上生长缓慢,需要一个用于该物种商业繁殖的系统。本研究旨在测试水、盐酸或乙酸预处理对泽氏菌种子发芽的影响,以及不同基质对泽氏杆菌幼苗初始发育的影响。将种子浸入去离子水、盐酸(5N)或冰醋酸(100%)中10、20、30、40和50分钟,并将其置于含有用5mL去离子水润湿的滤纸的培养皿中发芽。从这种发芽中获得的幼苗(lect 0.4 cm直径)在Carolina Soil®和蛭石[2:1]基质上培养;Carolina Soil®和蛭石[2:1]+排水;中粒砂;中粒砂+排水;中粒砂和有机堆肥[1:1];中粒砂和有机堆肥[1:1]+排水;以及Carolina Soil®和中粒砂[1:1]。在10分钟和30分钟的时间内,通过浸泡在水中的预处理获得了最高的发芽率,总计55%的发芽种子。用盐酸处理并没有增加发芽种子的百分比,也接近50%。在基质试验中,Carolina Soil®的幼苗移植后存活率(87.5%)和幼苗发育性能最好。含有有机堆肥的处理导致较低的存活率(69%)和幼苗发育。在Carolina Soil®基质和沙子中的种子发芽和幼苗发育被证明是生产泽氏菌幼苗的绝佳替代品。
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Seed germination and substrates for seedlings cultivation of Melocactus zehntneri
ABSTRACT The populations of Melocactus zehntneri 'chapéu-de-frade' have shown an alarming decline due to the constant withdrawal of individuals from their natural areas. The low percentage of germination of M. zehntneri seeds, added to the slow growth, requires a system for commercial propagation of this species. This study aimed to test the influence of water, hydrochloric acid or acetic acid pre-treatments on seed germination and the influence of different substrates on the initial development of M. zehntneri seedlings. The seeds were immersed in deionized water, hydrochloric acid (5N) or glacial acetic acid (100%) for 10, 20, 30, 40 and 50 minutes and placed to germinate in a Petri dish containing filter paper moistened with 5 mL deionized water. The seedlings obtained from this germination (≡ 0.4 cm diameter) were cultivated on Carolina Soil® and vermiculite [2:1] substrates; Carolina Soil® and vermiculite [2:1] + drainage; medium-grained sand; medium-grained sand + drainage; medium-grained sand and organic compost [1:1]; medium-grained sand and organic compost [1:1] + drainage; and Carolina Soil® and medium-grained sand [1:1]. The highest percentage of germination was obtained with the pre-treatment by immersion in water, in the times of 10 and 30 minutes, totaling 55% of germinated seeds. Treatments with hydrochloric acid did not increase the percentage of germinated seeds, which were also close to 50%. In the test with the substrates, in Carolina Soil® there were the best rates of seedling survival after transplanting (87.5%) and seedling development performance. Treatments containing organic compost resulted in lower survival (69%) and seedling development. Seed germination and seedling development in Carolina Soil® substrate and sand proved to be an excellent alternative for the production of M. zehntneri seedlings.
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来源期刊
Horticultura Brasileira
Horticultura Brasileira 农林科学-园艺
CiteScore
1.40
自引率
28.60%
发文量
45
审稿时长
4-8 weeks
期刊介绍: The journal Horticultura Brasileira, a quarterly journal, is the Official Publication of the Sociedade de Olericultura do Brasil. Its abbreviated title is Hortic. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.
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