CD Skripsi

Studi Awal Pengaruh Panjang Gelombang Sumber Cahaya Penginduksi Terhadap Intensitas Fluoresensi Klorofil Pada Daun Bayam Yang Dipengaruhi Variasi Cahaya Matahari

---

Chlorophyll fluorescence imaging and spectroscopy can be used to detect early abnormalities on plants, which are caused by plant diseases, harsh environments, and intentional treatments. Development in chlorophyll imaging and spectroscopy which is economical, low cost, and portable is needed in attempts to explore fluorescence spectrum as markers for diseases and environmental stresses on plants. In this research, a fluorescence imaging system was built using LEDs with three variations in wavelengths i.e. 450 nm; 525 nm; and 680 nm, and a 3 Mega Pixel CMOS camera. The LED light was used as an excitation beam to induce chlorophyll fluorescence of spinach leaves. The samples were Spinach leaves from Amaranthus tricolor Spinach plants grown under two variations of sunlight intensities. The two variations of the intensities were about 90% using plastic as the cover and 40% using plastic plus net cover or paranet. Images of the leaves after shoned by the LED light were taken by CMOS camera. The fluorescence intensity of the leaves were measured from RGB plot using Image-J software. Relation between the LED wavelengths and the fluorescence intensities of the spinach leaves were investigated. Relation between the sunlight intensity and fluorescence intensity was also investigated. The research results show that fluorescence intensities of the sample without paranet were higher than those using paranet. This is possibly caused by chlorophyll contents which is higher on plants using paranet. The excitation wavelength that showed the highest different fluorescence intensity was 680 nm, which showed 6,3% difference in fluorescence intensity using and without paranet while for other excitation wavelength were only 0,4% and 1,7% for 450 nm and 525 nm, respectively.
Keywords: Amaranthus tricolor spinach, chlorophyll fluorescence, fluorescence imaging, Image-J, wavelength dependent fluorescence

---

Ketersediaan

Informasi Detail

Judul Seri

-

No. Panggil

03 01. 115 (0021)

Penerbit

Pekanbaru : Universitas Riau - FMIPA - Fisika., 2015

Deskripsi Fisik

xv, 52 hlm.: ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

03 01. 115 (0021)

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

FISIKA

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Dewa

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar