Pengaruh Mikrogravitasi Pada Biji Cabai Rawit yang Telah Terpapar Radiasi UVC Terhadap Laju Pertumbuhan Tanaman Cabai Rawit (Capsicum Frutescent L.)

Abstract

Telah dilakukan penelitian tentang pengaruh mikrogravitasi pada biji cabai rawit (Capsicum frutescent L.) yang telah terpapar radiasi UVC selama 1 jam terhadap laju pertumbuhan dan persentase hidup tanaman cabai. Lingkungan mikrogravitasi disimulasikan menggunakan klinostat 2-D dengan kecepatan rotasi 2,7 rpm. Biji terpapar radiasi UVC tersebut diberikan perlakuan mikrogravitasi selama 12 jam, 24 jam, dan 48 jam, yang secara berurutan disebut sampel S5, S6, dan S7. Sebagai pembanding adalah biji tanpa perlakuan (kontrol), biji dengan radiasi UVC selama 1 jam, biji dengan perlakuan mikrogravitasi selama 12 jam, 24 jam, dan 48 jam, yang secara berurutan disebut sampel S0, S1, S2, S3, dan S4. Semua kelompok sampel tersebut ditanam pada lingkungan gravitasi normal, 1 g. Penelitian ini dilakukan selama fase vegetatif (sampai umur tanaman 40 hari). Pengukuran tinggi tanaman dan jumlah tanaman hidup dilakukan setiap hari. Hasil penelitian menunjukkan bahwa perlakuan mikrogravitasi pada biji cabai yang terpapar radiasi UVC selama 1 jam memberikan pengaruh negatif atau positif terhadap laju pertumbuhan tanaman cabai rawit. Besar pengaruh bergantung pada lama perlakuan yang diberikan dan fase pertumbuhan tanaman. Pada persentase tanaman hidup, tidak terdapat perbedaan antara sampel kontrol dan sampel dengan perlakuan mikrogravitasi.Kata Kunci : mikrogravitasi, biji cabai rawit, radiasi UVC, laju pertumbuhan, persentase tanaman hidup Abstract A research on the effect of microgravity on cayenne pepper seeds (Capsicum Frustescent L.) that has been exposed to UVC radiation for 1 h on the growth rate and the percentage of plants life has been done. The microgravity environment was simulated using a 2-D clinostat with a rotational speed of 2.7 rpm. The seeds exposed to UVC radiation were given microgravity treatments for 12 h, 24 h, and 48 h, sequentially called as samples S5, S6, and S7. As comparison, it has been prepared a group of control such as Seeds without treatment (control), Seeds with UVC radiation for 1 h, seeds with microgravity treatment for 12 h, 24 h, and 48 h, sequentially called as S0, S1, S2, S3, and S4 samples. All of the sample groups were planted in a normal gravity environment, 1 g. This study was conducted during the vegetative phase (up to 40 days of plant life). Measurement of plant height and number of life plants is done daily. The results showed that microgravity treatment on cayenne pepper seed exposed to UVC radiation for 1 h gave negative or positive effects on the growth rate of cayenne pepper plant. The effect depends on the length of the given treatment and plant growth phase. In the percentage of life plants, there was no difference between control and samples with microgravity treatment.