Abstract
<p><em>PGPR (Plant Growth Promoting Rhizobacteria) is a group of bacteria that colonize in the area of the rhizosphere. These groups of bacteria favor plant growth because they are able to mobilize and provide nutrients and phytohormones. The ability of the bacterial group can be utilized as a growth regulator in the red ginger nursery (Z. officinale Var Rubrum). This study aims to determine the optimal dosage of PGPR for the growth of red ginger seed (Z. officinale Var Rubrum). In this study, red ginger rhizome (Z. officinale Var Rubrum) was soaked with various concentrations of PGPR ie 0%, 25%, 50%, 75% and 100%. The results of this study indicate that soaking rhizomes using PGPR solution significantly influence the growth of red ginger seeds in the form of high seedlings, the number of shoots grow, the number of leaves and the mass of seedlings. A 25% dose has a better ability to boost the growth of seeds when compared to other doses.</em><strong></strong></p><p><em><br /></em><strong></strong></p><p><strong>Keywords: </strong><strong><em>Zingiber officinale Var. Rubrum</em></strong><strong><em>, PGR, Phytohormone</em></strong><strong>. </strong></p>
Highlights
PGPR (Plant Growth Promoting Rhizobacteria) is a group of bacteria that colonize in the area of the rhizosphere
Selanjutnya berdasarkan hasil uji Bonferroni yang tertera pada Tabel. 1 menunjukkan bahwa secara statistik terdapat perbedaan yang signifikan terhadap tinggi, jumlah tunas dan daun bibit jahe merah antara rimpang jahe yang tidak direndam dengan larutan PGPR (0%) dengan rimpang jahe yang direndam dengan larutan PGPR
Tidak terdapat perbedaan signifikan terhadap tinggi jumlah tunas, jumlah daun, dan massa bibit PGPR antar perlakuan perendaman berbagai dosis PGPR (25%, 50%, 75% dan 100%) artinya perendaman rimpang jahe dengan larutan PGPR dosis 25%, 50%, 75% maupun 100% memberikan pengaruh yang sama baiknya terhadap pertumbuhan bibit jahe
Summary
Berdasarkan hasil uji statistik penelitian ini adalah polybag, cetok, diketahui bahwa perendaman rimpang jahe baeker glass, gayung plastik, jirigen, merah Rubrum) timbangan, gloves, mortar dan pistil, menggunakan larutan PGPR berpengaruh penggaris, masker dan kamera. Sedangkan secara signifikan terhadap tinggi bibit, bahan yang digunakan adalah rimpang jumlah tunas, jumlah daun dan massa bibit jahe merah Rubrum), tanah perakaran (jagung, alang- jahe merah berupa (tinggi bibit, jumlah alang, rumbut gajah, tebu,dan bambu), tunas, jumlah daun dan massa bibit) disajikan dalam Tabel 1. Data pengaruh perendaman rimpang menggunakan PGPR terhadap pertumbuhan jahe merah
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