KORELASI KARAKTER ANATOMI DAUN UBI JALAR (<em>Ipomoea batatas</em> L.) KULTIVAR TAHAN DAN TIDAK TAHAN TERHADAP INTENSITAS PENYAKIT KUDIS DAUN

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.

Histopathological Evaluation of Soybean (Glycine max (L.) Merr.) Strains Resistance to Sclerotium rolfsii Disease

“…Arifin (2013) adds that the number of trichomes in healthy soybean plants is higher more than in sick soybean plants. Pradana et al (2017) reported that the density of stomata-trichomes was the same as the plant disease intensity. On the other hand, Samiyarsih et al (2020b) mention that soybean cultivars that have thicker cuticle and epidermis, high trichomes and low stomatal density, and low stomatal conductance have better anatomical resistance to leaf rust disease.…”

Perbandingan Struktur Anatomi dan Kadar Klorofil antara Daun Terinfeksi dan Tidak Terinfeksi Penyakit Kuning pada Tanaman Lada

“…Tanaman lada yang terinfeksi penyakit melakukan transpirasi untuk mempercepat laju pengangkutan unsur hara dari akar menuju daun, semakin cepat laju transpirasi berarti semakin cepat pengangkutan air dan zat hara terlarut (Silaen, 2021). Agar tidak terjadi transpirasi yang berlebihan pada tanaman, stomata menurunkan tekanan turgor dengan cara menutup stomata (Pradana et al, 2017). Stomata pada tanaman lada yang terinfeksi penyakit menurunkan tekanan turgor sel penjaga sehingga ukuran stomata menjadi kecil (Bertolino et al, 2019).…”

“…Namun adanya infeksi penyakit ini diduga memiliki keterkaitan dengan penebalan kutikula dan epidermis meskipun tidak terlalu besar, hanya sekitar 10,25-18,95%, hal ini karena tanaman lada yang mengalami infeksi patogen di bagian perakarannya sehingga menyebabkan terhambatnya serapan hara dan mineral yang dibutuhkan tanaman untuk pertumbuhan dan perkembangan tanaman (Suryanti et al, 2017). Kutikula dan epidermis yang menebal merupakan bentuk adaptasi ketahanan struktural untuk menghambat infeksi patogen, karena kedua lapisan ini bersifat membatasi ruang interseluler (Pradana et al, 2017). Kutikula dan epidermis berfungsi melindungi jaringan dari lingkungan luar.…”

Anatomical profile and genetic variability of sweet potato (Ipomoea batatas) cultivars in Banyumas, Central Java, based on RAPD markers

“…Ecological factors are closely related to the leaf anatomical characteristic (He et al 2017). The density of stomata-trichomes and cuticle thickness of sweet potatoes leaves correlated with the intensity of leaf scab disease caused by pathogens Sphaceloma batatas (Pradana et al 2017). Samiyarsih et al (2020) reported that different cultivars of one species almost gave different structures, phytochemical compounds, and different biological activities.…”