Multiplikasi in vitro stroberi kultivar Tochiotome dengan penambahan jenis dan konsentrasi sitokinin untuk perbanyakan bibit

Ega Raisya; Denny Sobardini Sobarna; Anne Nuraini; Syariful Mubarok; Erni Suminar; Masako Akutsu

doi:10.24198/kultivasi.v19i3.26932

Multiplikasi in vitro stroberi kultivar Tochiotome dengan penambahan jenis dan konsentrasi sitokinin untuk perbanyakan bibit

Ega Raisya, Denny Sobardini Sobarna, Anne Nuraini, Syariful Mubarok, Erni Suminar, Masako Akutsu

Abstract

Sari

Perbanyakan tanaman stroberi secara konvensional dilakukan dengan menggunakan stolon, tetapi kurang efektif serta kualitas bibit yang dihasilkan kurang baik akibat adanya akumulasi penyakit. Budidaya stroberi memerlukan adanya perbanyakan bibit secara massal, tetapi tidak mengubah kualitasnya. Multiplikasi in vitro menjadi solusi untuk penyediaan bibit berkualitas dalam jumlah besar. Upaya untuk mendapatkan tunas in vitro dalam jumlah banyak yakni perlu adanya penambahan zat pengatur tumbuh golongan sitokinin seperti Benzylaminopurine (BAP) atau Thidiazuron (TDZ). Tujuan penelitian ini adalah mengetahui dan menetapkan jenis serta konsentrasi sitokinin dengan hasil terbaik dalam multiplikasi stroberi kultivar Tochiotome. Percobaan dilaksanakan di Laboratorium Kultur Jaringan Tanaman, Teknologi Benih, Fakultas Pertanian, Universitas Padjadjaran. Penelitian menggunakan Rancangan Acak Lengkap yang terdiri dari tujuh perlakuan yang diulang lima kali, yaitu: Kontrol (tanpa sitokinin); BAP (0,25 ppm; 0,50 ppm; 0,75 ppm), dan TDZ (0,25 ppm; 0,50 ppm; 0,75 ppm). Hasil dari percobaan menunjukkan bahwa penambahan sitokinin tidak berpengaruh nyata terhadap jumlah tunas dan bobot segar planlet. Media perlakuan kontrol dapat menghasilkan jumlah akar lebih banyak dibandingkan dengan media ditambah sitokinin. Penambahan BAP 0,50 ppm berpengaruh positif terhadap jumlah daun dan dapat menghasilkan runner secara in vitro. Pemberian BAP 0,50 ppm cenderung dapat meningkatkan dan mempercepat produksi bibit tanaman stroberi kultivar Tochiotome.

Kata Kunci: Benzylaminopurine (BAP), Thidiazuron (TDZ), Stroberi, Kultur Jaringan

Abstract

Stolon is used for conventional propagation of strawberry, but it is less effective and the quality of the seeds is not good due to the accumulation of disease. In vitro multiplication becomes a solution for the supply of quality seeds in a fast time. The addition of growth regulator cytokinin, such as Benzylaminopurine (BAP) or Thidiazuron (TDZ) can produced the large number of shoot. The objective of this study was to obtain the best type and concentration of cytokinin in the multiplication of strawberry ‘Tochiotome’. The study was conducted at the Plant Tissue Culture Laboratory, Seed Technology, Faculty of Agriculture, Universitas Padjadjaran. This study used a Completely Randomized Design (CRD) with seven treatments and five replications, that were: Control (without cytokinin); BAP (0.25 ppm; 0.50 ppm; 0.75 ppm), and TDZ (0.25 ppm; 0.50 ppm; 0.75 ppm). The results indicated that addition of cytokinin did not affected increasing number of shoots and fresh weight

of plantlets. Control media can produce larger number of roots than those containing PGRs, this might be due to the endogenous auxin concentrations found in strawberry plants. Also, cytokinin inhibited root formations process. Plants treated with BAP 0.50 ppm increased for the number of leaves and produced runners in vitro. This study showed application of BAP with 0.50 ppm increased and accelerated the production of strawberry ‘Tochiotome’ seedlings.

Keywords: Benzylaminopurine (BAP), Thidiazuron (TDZ), Strawberry, Tissue Culture

Keywords

Benzylaminopurine (BAP); Thidiazuron (TDZ); Stroberi; Kultur Jaringan

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DOI: https://doi.org/10.24198/kultivasi.v19i3.26932