Canopy seed bank and serotinous cones of Pinus yunnanensis forests

Pinus halepensis (Aleppo pine), is the dominant tree of a large fraction (26%) of the Greek coniferous forests; this species is an endemic pine of the Mediterranean Rim and well adapted to fire. Its regeneration is accomplished exclusively through seeds, thus its soil and canopy seed banks are of paramount importance for postfire resilience. Cone opening and seed dispersal were investigated in unburned forests of Attica (Greece) and it was found that Pinus halepensis trees maintain a significant percentage of the yearly cone crop (40-80%) closed, thus creating a persistent, canopy seed bank. Full viability of enclosed seeds was maintained for at least three years in canopy storage; moreover, preliminary results concerning the viability of seeds enclosed within the cones for four to more than 50 years showed a gradual reduction of both final percentage and rate of germination. Nevertheless, cones of up to 20 years of age contained a considerable fraction of germinable seeds. On the other hand, Aleppo pine forms only a short-lived (transient) soil seed bank; this bank was particularly abundant after a fire, as a result of the fire-induced cone opening. The germinable seed portion, although quite important prior to the start of the rainy season, was rapidly depleted, and at the end of the rainy season it was virtually absent in both burned and unburned forests. It is therefore concluded that postfire Aleppo pine seedling recruitment takes place almost exclusively during the first year after the fire and depends upon the germination of seeds in a transient soil bank which is produced by the postfire dispersal of pine seeds stored in the canopy seed bank.

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Regeneration by three species of Banksia on the south coast of Western Australia in relation to fire interval

Australian Journal of Botany ◽

10.1071/bt01078 ◽

2002 ◽

Vol 50 (3) ◽

pp. 311 ◽

Cited By ~ 15

Author(s):

S. J. Wooller ◽

R. D. Wooller ◽

K. L. Brown

Keyword(s):

Western Australia ◽

Seed Bank ◽

Seed Set ◽

Fire Regimes ◽

South Coast ◽

The South ◽

Coastal Species ◽

Age Related ◽

Canopy Seed Bank ◽

Over 40 Years

The regeneration strategies of three Banksia species in relation to fire were studied over 20 years in a mediterranean heathland-shrubland on the south coast of Western Australia. Banksia baueri and B. nutans are both bushes 1–2 m high, while B. baxteri is a shrub 4 m high. All three species regenerated only from seed released from the canopy seed bank after fire. They did not start to flower until 6 years after fire and seed set took even longer. Differences between the species in age-related intensity of flowering were related to the rate at which each species accumulated seed in the canopy. Even plants over 40 years old were still increasing their overall canopy seed bank or replacing seeds that had been released or were no longer viable. The vegetation studied appeared to be little affected by humans historically and to have burnt only at intervals of 30–60 years or more. Consequently, although all three species needed fire to regenerate, management of fire regimes needs to allow adequate intervals between fires for the replacement of their canopy seed banks. Indeed, all three Banksia species studied were extinguished from one area burnt twice at an interval of 9 years. Models developed with Banksia species from the northern sand plains of Western Australia, where fires appear more frequent, may need modification to be applicable to all south-coastal species.

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Canopy seed bank structure in relation to: fire, tree size and density

Plant Ecology ◽

10.1023/b:vege.0000029324.40801.74 ◽

2004 ◽

Vol 173 (2) ◽

pp. 191-201 ◽

Cited By ~ 46

Author(s):

S. Goubitz ◽

R. Nathan ◽

R. Roitemberg ◽

A. Shmida ◽

G. Ne’eman

Keyword(s):

Seed Bank ◽

Tree Size ◽

Bank Structure ◽

Canopy Seed Bank

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Canopy Seed Bank Dynamics and Optimum Fire Regime for the Highly Serotinous Shrub, Banksia Hookeriana

Journal of Ecology ◽

10.2307/2261695 ◽

1996 ◽

Vol 84 (1) ◽

pp. 9 ◽

Cited By ~ 74

Author(s):

N. J. Enright ◽

Byron B. Lamont ◽

Ralf Marsula

Keyword(s):

Seed Bank ◽

Fire Regime ◽

Seed Bank Dynamics ◽

Canopy Seed Bank

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Variabilitas Genetik dan Heritabilitas Karakter Agronomi Galur-Galur Sawi (Brassica juncea L.)

AGROSAINSTEK Jurnal Ilmu dan Teknologi Pertanian ◽

10.33019/agrosainstek.v3i2.72 ◽

2019 ◽

Vol 3 (2) ◽

pp. 73-83

Author(s):

Raihan Fadhil Muhammad ◽

Budi Waluyo

Keyword(s):

Brassica Juncea ◽

Seed Bank ◽

Augmented Design

Penelitian ini bertujuan untuk mempelajari variabilitas genetik, heritabilitas, dan menyeleksi penampilan genotipe karakter agronomi unggul pada 57 galur sawi untuk digunakan dalam bahan baku konsumsi dan industri. Penelitian ini dilaksanakan di Seed Bank and Nursery, Agrotechno Park Universitas Brawijaya, Desa Jatikerto, Kecamatan Kromengan, Kabupaten Malang pada bulan Desember 2018 – April 2019. Metode yang digunakan untuk penelitian ini adalah rancangan acak kelompok diperluas (augmented design). Perlakuan yang diberikan adalah 60 genotipe sawi yang terdiri dari 57 genotipe yang diuji dan 3 varietas sebagai cek. Genotipe yang diuji akan disebar kedalam 5 blok, sedangkan tiga varietas cek akan ditanam pada setiap blok, sehingga terdapat 72 satuan percobaan. Variabel pengamatan karakter agronomi terdiri dari 15 karakter kualitatif dan 24 karakter kuantitatif. Variabilitas yang luas terdapat pada karakter biji per polong, jumlah polong per tanaman, dan berat segar. Heritabilitas tinggi terdapat pada karakter panjang kotiledon, jumlah daun konsumsi, berat segar, umur panen benih, jumlah polong per tanaman, panjang polong, lebar polong, dan jumlah biji per polong. Terdapat galur-galur sawi yang mempunyai karakter unggul untuk bahan baku konsumsi dan industri.

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Potential of Soil Seed Bank and Ungulate-mediated Endozoochory in Old Field Restoration

Ecological Restoration ◽

10.3368/er.38.1.9 ◽

2020 ◽

Vol 38 (1) ◽

pp. 9-12

Author(s):

Sheunesu Ruwanza

Keyword(s):

Seed Bank ◽

Soil Seed Bank ◽

Old Field

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Penerapan Teknologi Seed Bank Sebagai Upaya Rehabilitasi Kawasan Ekosistem Leuser Pasca Kerusakan Akibat Pembukaan Perkebunan Kelapa Sawit

Journal of Biota ◽

10.24002/biota.v4i1.2366 ◽

2019 ◽

Vol 4 (1) ◽

pp. 1

Author(s):

Sri Jayanthi, Zulfan Arico

Keyword(s):

Seed Bank ◽

Melastoma Malabathricum ◽

Cocculus Hirsutus

Penelitian ini bertujuan untuk mengkaji keanekaragaman jenis tumbuhan penyusun vegatasi kawasan ekosistem Taman Nasional Gunung Leuser yang mengalami kerusakan akibat pembukaan perkebunan kelapa sawit dengan menggunakan teknologi seed bank. Waktu penelitian berlangsung mulai bulan April sampai September 2018. Pengambilan sampel tanah menggunakan metode jalur. Pada jalur pengamatan diambil cuplikan sampel tanah sesuai dengan kondisi tutupan tajuk dan kerapatan vegetasi yang dibagi menjadi 3 titik yaitu jarang, sedang dan rapat. Kemudian masing-masing titik diambil sampel tanah secara random sebanyak 3 kali ulangan dengan menggunakan kotak besi berukuran 25 x 25 cm sedalam: (i) 0-5 cm, (ii) 5-10 cm, (iii) 10-15 cm. Tanah kemudian dimasukkan kedalam kantong plastik dengan menggunakan cangkul kemudian diberi label.ampel tanah kemudian disimpan di dalam rumah kaca untuk selanjutnya dilakukan uji perkecambahan. Informasi tentang cadangan biji di dalam tanah penting dalam studi ekologi komunitas karena dapat menggambarkan vegetasi yang ada di atasnya dan mengetahui potensi jenis tanaman lain yang akan tumbuh di habitat tersebut. Dari hasil penelitian ditemukan 13 famili dengan 18 jenis yang tumbuh pada bak-bak penelitian yang terdiri dari 7 jenis pohon dan 11 jenis golongan tumbuhan bawah dengan jumlah seluruhnya adalah 366 spesies. Dari hasil kekayaan jenis kecambah yang tumbuh pada bak pengamatan didapatkan nilai KR, FR dan INP tertinggi terdapat pada jenis Melastoma malabathricum dengan nilai KR (63,115 %), nilai FR (32,692 %) dan INP (95,807 %). Sedangkan untuk nilai terendah terdapat pada jenis Cocculus hirsutus dengan nilai KR (0,273 %), FR (0,962 %) dan INP (1,235 %). Jenis dan jumlah kecambah sangat dipengaruhi oleh ketinggian tempat dan tidak dipengaruhi oleh kedalaman tanah. Jumlah biji terbanyak yang ditemukan di lantai hutan adalah jenis Macaranga gigantea yaitu 28 biji dan jumlah biji terendah yang ditemukan adalah jenis Villebrunea rubescens, yaitu sebanyak 7 biji.

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