scholarly journals Seleksi Cekaman Kekeringan Secara In Vitro Tunas Jagung Putih (Zea mays L.) Menggunakan PEG

2021 ◽  
Vol 6 (2) ◽  
pp. 142-147
Author(s):  
Maria Yustiningsih ◽  
Amanda Poto ◽  
Ludgardis Ledheng
Keyword(s):  
Zea Mays ◽  
Drought Stress ◽  
Growth Inhibition ◽  
Root Length ◽  
Zea Mays L ◽  
Plant Biomass ◽  
Biology Education ◽  
Shoot Height ◽  
Randomized Design

This study aims to identify the morphology response of white corn (Zea mays L) shoots explant on in vitro drought stress selection using Polyethylene glycol (PEG). The study was conducted at the Biology Education Laboratory, University of Timor using a Completely Randomized Design (CRD) with three treatment concentrations of PEG, namely PEG 0 gr/L (control), PEG 5 gr/L, and 15 gr/L. The explants grown on Murashige & Skoog (MS) basal media with PEG according to the treatment concentration. Parameters observed were root length, shoot height and plant biomass to see plant response to drought stress. Data were analyzed using SPSS and further test using DMRT. The results showed that the concentration of PEG gradually could affect plant growth, especially shoot height. PEG concentration of 5 gr/ml and 15 gr/ml was the highest shoot growth (2,625 cm) when compared to PEG 0 gr/L (1.47) which indicated that explants could still grow under drought stress conditions. However, both treatments showed no effect of PEG on root length and biomass which could indicate growth inhibition in the given selection. Based on the results it can be concluded that PEG selection can affect the growth rate of white corn shoots and growth inhibition.

scholarly journals Multiplikasi Eksplan Tunas Anggrek Hitam (Coelogyne pandurata Lindl.) dengan Penambahan NAA (Naphthalene Acetic Acid) dan Ekstrak Biji Jagung (Zea mays) Secara In Vitro

2021 ◽  
Vol 11 (2) ◽  
pp. 114
Author(s):  
Nurkapita Nurkapita ◽  
Riza Linda ◽  
Zulfa Zakiah
Keyword(s):  
Tissue Culture ◽  
Zea Mays ◽  
Acetic Acid ◽  
Seed Extract ◽  
Naphthalene Acetic Acid ◽  
Shoot Height ◽  
Culture Techniques ◽  
Corn Seed ◽  
Randomized Design

(Article History: Received February 18, 2021; Revised April 27, 2021; Accepted May 19, 2021) ABSTRAKPerkembangbiakan anggrek secara generatif alami membutuhkan bantuan jamur mikoriza untuk perkecambahan biji, sedangkan usaha perbanyakan konvensional memerlukan waktu lama untuk memperoleh tanaman dalam jumlah banyak. Salah satu alternatif untuk perbanyakan anggrek hitam (Coelogyne pandurata Lindl.) adalah melalui multiplikasi tunas anggrek secara in vitro. Tujuan penelitian adalah untuk membuktikan pengaruh pemberian NAA (Naphthalene Acetic Acid) dan ekstrak biji jagung (Zea mays) terhadap multiplikasi tunas anggrek hitam. Penelitian dilakukan di Laboratorium Kultur Jaringan Jurusan Biologi Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Tanjungpura Pontianak. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor perlakuan. Faktor pertama adalah NAA terdiri dari 5 taraf konsentrasi yaitu A0 (0 M/ kontrol) A1 (10-7 M), A2 (10-6 M), A3 (5x10-7 M) dan A4 (5x10-6 M ) dan faktor ekstrak biji jagung (B) dengan 5 taraf konsentrasi yaitu B0 (0%), B1 (2,5%), B2 (5%); B3 (7,5%) dan B4 (10%). Pemberian kombinasi NAA dan ekstrak biji jagung berpengaruh nyata terhadap semua parameter yaitu jumlah tunas, jumlah daun, dan tinggi tunas. Hasil terbaik rerata jumlah tunas pada perlakuan A4+B4 yaitu 5x10-6M NAA+10% ekstrak biji jagung. Hasil terbaik pada rerata jumlah daun pada perlakuan A2+B2 yaitu 5x10-7M NAA+5% ekstrak biji jagung dan hasil terbaik pada rerata tinggi tunas pada perlakuan A1+B1 yaitu 10-7M NAA+2,5% ekstrak biji jagung.Kata Kunci: multiplikasi; tunas anggrek hitam; ekstrak biji jagung; NAA. ABSTRACTGenerative reproduction of orchid plants it takes a requires the help of mycorriza mushrooms for seed germination, whereas conventional propagation business takes a long time to obtain large quantities of plants. One alternative to the propagation black orchids (Coelogyne pandurata Lindl.) is required through tissue culture techniques. The purpose of this study is to find the influence and concentration corn seed extract (Zea mays) and NAA (Naphthalene Acetic Acid) on the multiplication black orchids. This research was conducted in the tissue culture laboratory Biology Department Faculty of Mathematics and Natural Sciences Tanjungpura University Pontianak. The study used a Complete Randomized Design (RAL) of factorial patterns with two treatment factors. The first factor is that the NAA consists of 5 concentration levels  A0 (0 M) A1 (10-7 M), A2 (10-6 M), A3 (5x10-7 M) and A4 (5x10-6 M ) and the second factor is that corn seed extract of 5 levels concentratio B0(0%), B1 (2,5%), B2 (5%); B3 (7,5%) and B4 (10%). The administration NAA and corn seed extract in combination has a real effect on all parameters namely the number shoots, the number leaves, and the height shoots. The best results where the average number of shoots in the treatment of A2+B2 namely 5x10-6M NAA + 10% corn seed extract. The best results average number of leaves in the treatment  A2+B2 namely 5x10-7M NAA + 5% corn seed extract and in the best results for shoot height in the treatment of A1+B1 namely 10-7M NAA + 2.5% corn seed extract.Keywords: Multiplication; black orchid’s shoot; corn  seed extract; NAA

RESPONSE OF TURMERIC SHOOT EXPLANT AFTER CYTOKININ WITH IN VITRO

2019 ◽  
Vol 24 (2) ◽  
pp. 143-152
Author(s):  
Marhan Nurullia ◽  
Erni Suminar Suminar ◽  
Anne Nurani
Keyword(s):  
Tissue Culture ◽  
Root Length ◽  
Air Flow ◽  
T Test ◽  
Shoot Height ◽  
Best Response ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Laminar Air Flow

This study was aimed at determining the response of turmeric shoot explants after the provision of various types and concentrations of cytokinins in vitro. This experiment was conducted at the Tissue Culture Laboratory, Faculty of Agriculture, Padjadjaran University from January to April 2018. The data were analyzed using T-Test. The experimental method used in this research was Completely Randomized Design (CRD). Explant planting was carried out in Laminar Air Flow. The experiment consisted of 7 treatments consisting of 4 replications and each test consisted of 4 units. Observation of this experiment was carried out for 12 MST. The main observations were made on the data that were tested statistically namely the percentage of explant growing shoots, percentage of explant growing roots, shoot height, number of tuns, number of roots and root length. The treatments consisted of Control, 2.5 mg L-1 BAP, 5 mg L-1 BAP, 0.5 mg L-1 TDZ, 1 mg L-1 TDZ, 0.01 mg L-1 Zeatin and 0.1 mg L Zeatin -1. The results show that the treatment of 1 mg L-1 TDZ shows the best response to the growth of turmeric explants by increasing the number of turmeric shoot explants than the others.RESPONS EKSPLAN TUNAS KUNYIT SETELAH SITOKININ SECARA IN VITROTujuan dari penelitian ini yaitu untuk melihat respons eksplan tunas kunyit terhadap pemberian berbagai jenis dan konsentrasi sitokinin secara in vitro. Percobaan ini dilakukan di Laboratorium Kultur Jaringan, Fakultas Pertanian, Universitas Padjadjaran dari bulan Januari sampai April 2018. Hasil percobaan dianalisis dengan Sample T-Test. Metode percobaan yang digunakan dalam penelitian ini yaitu Rancangan Acak Lengkap (RAL). Penanaman eksplan dilakukan di dalam Laminar Air Flow. Percobaan terdiri dari 7 perlakuan sebanyak 4 ulangan dan setiap ulangan terdiri dari 4 unit. Pengamatan percobaan ini dilakukan selama 12 MST. Pengamatan utama dilakukan terhadap data-data yang diuji secara statistik yakni persentase eksplan tumbuh tunas, persentse eksplan tumbuh akar, tinggi tunas, jumlah tunas, jumlah akar dan panjang akar. Perlakuan terdiri dari Kontrol; 2,5 mg L-1 BAP; 5 mg L-1 BAP; 0,5 mg L-1 TDZ; 1 mg L-1 TDZ; 0,01 mg L-1 Zeatin; dan 0,1 mg L-1 Zeatin. Hasil penelitian menunjukkan bahwa perlakuan 1 mg L-1 TDZ menunjukkan respons yang lebih baik terhadap pertumbuhan eksplan kunyit dengan meningkatkan jumlah tunas eksplan tanaman kunyit daripada yang lainnya.

Silicon and cadmium interaction of maize (Zea mays L.) plants cultivated in vitro

Biologia ◽  
2021 ◽  
Author(s):  
Zuzana Lukacova ◽  
Denis Liska ◽  
Boris Bokor ◽  
Renata Svubova ◽  
Alexander Lux
Keyword(s):  
Zea Mays ◽  
Zea Mays L

Subsitusi Fitohormon Dengan Air Kelapa (Cocos nucifera L.) pada Medium Vacin and Went Terhadap Pertumbuhan Eksplan Anggrek Dendrobium sp Secara in Vitro

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Wulan Dari Neng Gumiwang ◽  
Tintrim Rahayu ◽  
Ari Hayati
Keyword(s):  
Root Length ◽  
Cocos Nucifera ◽  
Water Concentration ◽  
Coconut Water ◽  
Culture Bottle ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Cocos Nucifera L

The purpose of this research is to determine the concentration of young coconut water that is appropriate for the growth of orchid plantlets (Dendrobium sp.) In vitro. This study used an experimental method, descriptive data analysis to compare several different concentrations of coconut water. The design of this study uses a completely randomized design (CRD). The treatments consist of 0% coconut water concentration (as a control), 15%, 30% and 60%. Each concentration was carried out 5 replications and each repetition consisted of 5 Dendrobium sp plantlets in each culture bottle conducted for 40 HST, for observing the root length carried out for 50 HST. The highest number of shoots and leaves were produced at the same concentration, namely 150 ml / L coconut water treatment (15% concentration) with an average of 2.8 shoots and the average number of leaves 10.8 leaves. The average number of roots and the longest root length was produced at a concentration of 600 ml / L coconut water (60% concentration) with an average of 6 roots, and the longest root length was 0.5 cm.Keywords: Young coconut water, (Cocos nucifera L.), Dendrobium sp., in vitro, growth.ABSTRAKTujuan penelitian ini ialah menentukan konsentrasi air kelapa muda yang tepat untuk pertumbuhan planlet anggrek (Dendrobium sp.) secara in vitro. Penelitian ini menggunakan metode eksperimen, analisis data secara deskriptif untuk membandingan beberapa konsentrasi air kelapa yang berbeda. Rancangan penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Perlakukan terdiri dari konsentrasi air kelapa 0 % (sebagai kontrol), 15% , 30% dan 60%. Masing-masing konsentrasi dilakukan 5 kali ulangan dan setiap ulangan terdiri dari 5 planlet Dendrobium sp dalam setiap botol kultur yang dilakukan selama 40 HST, untuk pengamatan panjang akar dilakukan selama 50 HST. Jumlah tunas dan jumlah daun terbanyak dihasilkan pada konsentrasi yang sama, yaitu perlakuan air kelapa 150 ml/L (konsentrasi 15%)  dengan rata-rata jumlah tunas terbanyak 2,8 tunas dan rata-rata jumlah daun terbanyak 10,8 helai daun. Rata-rata jumlah akar terbanyak dan panjang akar terpanjang dihasilkan pada konsentrasi air kelapa 600 ml/L (Konsentrasi 60%) dengan rata-rata jumlah akar terbanyak sebanyak 6 akar, dan rata-rata panjang akar terpanjang 0,5 cm.Kata kunci : Air kelapa Muda (Cocos nucifera L.), Dendrobium sp., in vitro, pertumbuhan 

scholarly journals Efeito do estresse salino e da prolina exógena em calos de milho

2000 ◽  
Vol 12 (2) ◽  
pp. 146-155 ◽  
Author(s):  
TEREZINHA RANGEL CAMARA ◽  
LILIA WILLADINO ◽  
JOSEP MARIA TORNÉ ◽  
ALBERT MANICK ◽  
MARIA ASUNCIÓN SANTOS
Keyword(s):  
Zea Mays ◽  
Zea Mays L

O presente trabalho teve por objetivo avaliar o efeito de diferentes concentrações de NaCl (0, 68, 137 e 205 mM) sobre o cultivo in vitro de calos de dois genótipos (W64Ao2 e Arizona 8601) de milho (Zea mays L.), em meio de cultura N6, suplementado ou não com a adição de 6,0 mM de prolina. Os tratamentos consistiram da combinação dos quatro níveis de NaCl com os dois níveis de prolina, num fatorial 4x2. Os tratamentos foram mantidos durante 60 dias, com subcultivos a cada 20 dias. A taxa de crescimento dos calos e o conteúdo endógeno de putrescina, espermina, espermidina, prolina e outros aminoácidos livres foram avaliados no final do período experimental. A adição de prolina exógena favoreceu o crescimento dos calos no tratamento-controle e minorou os efeitos deletérios do estresse salino em ambos os genótipos, no nível de sal mais elevado (250mM de NaCl). A taxa de crescimento dos calos de W64Ao2 foi superior àquela dos calos de Arizona 8601, possivelmente por causa, em parte, do maior acúmulo de prolina endógena e da manutenção ativa do metabolismo das poliaminas naqueles calos.

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