Growth of porang (Amorphopallus muelleri) seedlings as influenced by seed maturity and the presence of sarcotesta

Indri Fariroh; Restiani Sih Harsanti; Aminatun Nisa; Didik Pudji Restanto; Rizky Anugerah Putra

doi:10.24198/kultivasi.v24i3.67215

Growth of porang (Amorphopallus muelleri) seedlings as influenced by seed maturity and the presence of sarcotesta

Indri Fariroh, Restiani Sih Harsanti, Aminatun Nisa, Didik Pudji Restanto, Rizky Anugerah Putra

Abstract

Porang seed maturity based its position on spadix position significantly impacts germination. The presence of the seed coat (sarcotesta) also influenced germination and initial seedling growth. This study aimed to explore the effect of seed maturity and the presence of sarcotesta to the seedling growth. The experiment was conducted from January to June 2023. A two factor Randomized Complete Block Design was employed, examining three maturity levels based on spadix position (physiological maturity seed from the tip spadix (red colour), half physiological maturity seed from the middle spadix (orange colour), and immature seed from the base spadix (green colour)), and the presence of sarcotesta (seed with sarcotesta, and seed without sarcotesta). Every treatment replicated six times, each experimental unit consisted of five seeds, resulting in a total of 180 seeds used in the experiment. The observation parameters were seed germination capacity, seedling height, leaf canopy, seedling fresh weight, seedling dry weight, number of seedling roots, and tuber diameter. The result showed that physiologically mature seeds produce the highest germination capacity and seedling dry weight compared to others. No significant correlation was found between the level of seed maturity including the presence of sarcotesta on all observed parameters. Seeds obtained from the top of the spadix (red fruit) showed higher germination capacity compared to others The removal of sarcotesta significantly enhanced all growth parameters, resulting in the highest seedling height, leaf canopy area, fresh and dry seedling weight, number of seedling roots, and tuber diameter in porang.

Keywords

base spadix; middle spadix; morphophysiological dormancy; tip spadix

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DOI: https://doi.org/10.24198/kultivasi.v24i3.67215