Siti Samiyarsih
Fakultas Biologi, Universitas Jenderal Soedirman

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KEMAMPUAN TANAMAN GLODOGAN Polyalthia longifolia SONN. SEBAGAI PENEDUH JALAN DALAM MENGAKUMULASI Pb UDARA BERDASARKAN RESPON ANATOMIS DAUN DI PURWOKERTO Rizqi Dwi Ardyanto; Slamet Santoso; Siti Samiyarsih
Scripta Biologica Vol 1, No 1 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (304.67 KB) | DOI: 10.20884/1.sb.2014.1.1.37

Abstract

Polyalthia longifolia is a plant that used as a roadside in Purwokerto. This study aimed to determine the ability of the plant P. longifolia in the air and accumulate Pb anatomic response to the Pb concentration in the leaves of P. longifolia. The methods of research used survey methods. Roadside plant leaf samples were taken by purposived sampling at six locationsmain street in Purwokerto, there are Jenderal Soedirman, Dr. Soeparno, HR. Bunyamin, Commisioner Bambang Soeprapto and Gerilya. The independent variable was the ambient air Pb and Pb leaf was the dependent variable. The main parameters investigated were air Pb concentrations, Pb leaves, stomata anatomical characters and thick mesophyll tissue. Parameter support was the traffic density. The results showed that the highest concentration of Pb in the air with a concentration of 0.1020 μg/m3 per hour on Gerilya street and the lowest in DR. Soeparno street with concentrations of 0.0048 μg/m3 per hour, it can be concluded that an ambient air Pb in six study sites are still under ambient air quality in Central Java, which is 2 μg/m3 per 24 hours. Leaf Pb concentration was highest in HR. Bunyamin street with a concentration of 0.4980 ± 0.004 ppm and lows in the DR. Soeparno street with concentrations of 0.2786 ± 0.008 ppm. Pb accumulated in leaves affects the density, length, and width of stomata and mesophyll tissue thickness P. longifolia. Pb concentrations was not correlate with the leaf Pb concentration P. longifolia. Pb concentrations of leaves of P. longifolia is closely linked with decreasing density of stomata and mesophyll tissue thickness but not related to the length and width of the stomata.
KORELASI KARAKTER ANATOMI DAUN UBI JALAR (Ipomoea batatas L.) KULTIVAR TAHAN DAN TIDAK TAHAN TERHADAP INTENSITAS PENYAKIT KUDIS DAUN Ade Winda Pradana; Siti Samiyarsih; Juni Safitri Muljowati
Scripta Biologica Vol 4, No 1 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (837.826 KB) | DOI: 10.20884/1.sb.2017.4.1.381

Abstract

Sweet potato (Ipomoea batatas L.) is one of alternative food sources beside than rice. Sweet potatoes are contains minerals, nutrients, sources of energy, protein, vitamins A and C. Sweet potatoes have lower productivity than rice and cassava. The low productivity of sweet potatoes due to several factors, which one of them is a leaf scab disease caused by pathogens Sphaceloma batatas Saw. The purpose of this study is to determine the character of the anatomy of sweet potato leaf cultivars that resistant and unresistant to the intensity of leaf scab disease, as well as the correlations between the anatomy character of sweet potato leaves with leaf scab disease intensity. The method used in this study is an experimental method with factorial completely randomized design. The first factor is the character of the anatomy of four cultivars sweet potato leaves, Cangkuang and Sukuh cultivars (cultivars resistant), cultivars Cilembu and Beta (unresistant cultivars). The second factor is the inoculation treatment S. batatas Saw. The parameters were observed thickness of cuticle, epidermis, mesophyll, the size (length and width) stomata, density of stomata and trikomata as well as the intensity of the disease were analyzed using analysis of variance (ANOVA). To determine the correlation between the anatomy character leaves with disease intensity using regression correlation analysis. The results showed that Cangkuang cultivar has cuticle, epidermis and mesophyll thickest. Beta cultivars have stomata size of the longest and widest. Cilembu cultivar has the highest density of stomata. Sukuh cultivars has the highest density. The anatomy characters include of a thick cuticle, epidermis, stomata size (length and width), as well as the density of stomata and trikomata correlated with intensity of leaf scab disease.