Alfi Inayati
Indonesian Legumes and Tuber Crops Research Institute (ILETRI),Jalan Raya Kendalpayak KM 8, PO BOX 66, Malang East Java, Indonesia, Phone :+62341 801468, Fax: +62341 801496,

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ULAT JENGKAL PADA KEDELAI DAN CARA PENGENDALIANNYA Inayati, Alfi; ., Marwoto
Buletin Palawija No 22 (2011)
Publisher : Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian

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Abstract

Ulat jengkal (looper) pada tanaman kedelai (Glycine max L. Merrill) terdiri dari tiga jenis, yaitu Plusia chalcites (Esper) (=Chrysoideixis chalcites), Pseudoplusia includens (Walker), dan Thysanoplusia oricachlea. Pada tanaman kedelai di Indonesia ulat jengkal tergolong hama utama yang memakan daun. Kerusakan daun yang disebabkan oleh ulat jengkal dapat menyebabkan kehilangan hasil sampai dengan 18%. Pengendalian ulat jengkal harus dilakukan dengan cermat dengan memperhatikan ambang kendali agar tindakan pengendalian yang diambil tepat, hemat secara ekonomi dan aman bagi lingkungan, sesuai dengan konsep pengendalian hama terpadu (PHT). Komponen PHT ulat jengkal pada kedelai terdiri dari pengaturan pola tanam, penggunaan varietas tahan, pemanfaatan musuh alami dan penggunaan insektisida yang efektif.
Tanggapan Planlet Vanili yang Diradiasi dengan Sinar Gamma dan Keragaannya Setelah Diinokulasi dengan Jamur Fusarium oxysporum f.sp. vanillae Mangoendidjojo, Woerjono; Hadisutrisno, Bambang; Inayati, Alfi
Jurnal Perlindungan Tanaman Indonesia Vol 6, No 2 (2000)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12390

Abstract

Vanilla is one of spice crops and important to world commerce. Indonesia is one of producing and exporting countries for decades. Recently, the planted area tends to decrease due to several factors. One of them is fusarium wilt caused by Fusarium oxysporum fsp. vanillae. The disease ranked among the most devastating disease attacking vanilla plants. The most effective method controlling fusarium wilt is the use of resistant varieties. The study aimed to know responses of vanilla plantlets irradiated by Gamma rays at several doses (0-4 krad). Five months after irradiation, the survival mutant plantlets were inoculated with suspension of the F. oxysporum fsp. vanillae to evaluate their resistance. Data of first concern taken were survival plantlets; number of leave, root, and sucker initiation; and infection intensity. The results indicated that higher the doses, decreased the survival plantlets. The applied doses performed significantly differences on the number of leave, root, and suckerinitiation. The untreated plantlets showed better responses as compared to those treated. Evaluation on their resistance after inoculation indicated that the survival plantlets irradiated at 3 and 1 krad showed lower infection intensity, eventhough variation within a treatment was observed. Evaluation on the individual plantlet basis seemed to be more helpful in order to identify mutant plantlets with better resistance.
Characteristics of superior soybean breeding lines tolerance to rust (Phakopsora pachyrhizi Syd.) Inayati, Alfi; Yusnawan, Eriyanto
Biosaintifika: Journal of Biology & Biology Education Vol 8, No 1 (2016): March 2016
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v8i1.5081

Abstract

Soybean rust caused by Phakopsora pachyrhizi is one of the most important diseases which limits soybean production. The aim of this study was to evaluate the resistance of 28 superior soybean lines and their tolerance to rust. The study was conducted at a screen house and arranged in a completely randomized design (CRD); three replications. All genotypes tested were artificially inoculated with P. pachyrhizi, and a set of un-inoculated genotypes was planted as a comparison. Number of pustules was recorded weekly, and resistant criteria was rated based on the International working group on soybean rust IWGSR method. Lesion color (LC), sporulation level (SL), number of uredia (NoU), frequency of pustule which had uredia, and yield were also recorded. Among 28 genotypes tested, only one was categorized as resistant and 2 genotypes were susceptible. Resistant genotypes had few pustules, lower AUDPC values, low disease severity, and Reddish Brown lesion type. Soybean rust affected yield components, i.e. number of intact pods and yield per plant. Yield loses due to rust in this study varied from 5-89%, and the average was 51%. The set of lines from Tanggamus pedigree showed more resistant to rust but less tolerant compared to Sinabung pedigree.How to CiteInayati, A., & Yusnawan, E. (2016). Characteristics of superior soybean breeding lines tolerancet to rust (Phakopsora pachyrhizi Syd.). Biosaintifika: Journal of Biology & Biology Education, 8(1), 47-55.