scholarly journals Genetic analysis of antixenosis resistance to the common cutworm (Spodoptera litura Fabricius) and its relationship with pubescence characteristics in soybean (Glycine max (L.) Merr.)

2012 ◽  
Vol 61 (5) ◽  
pp. 608-617 ◽  
Author(s):  
Nobuhiko Oki ◽  
Kunihiko Komatsu ◽  
Takashi Sayama ◽  
Masao Ishimoto ◽  
Masakazu Takahashi ◽  
...  
Keyword(s):  
Glycine Max ◽  
Genetic Analysis ◽  
Spodoptera Litura ◽  
Common Cutworm ◽  
Glycine Max L ◽  
The Common

scholarly journals KETAHANAN GALUR KEDELAI (Glycine max L.) TERHADAP SERANGAN ULAT GRAYAK (Spodoptera litura F.) BERDASARKAN KARAKTERISTIK TRIKOMA

el–Hayah ◽  
2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Eko Budi Minarno, Ika Khoiriyah
Keyword(s):  
Glycine Max ◽  
Spodoptera Litura ◽  
Glycine Max L

<p>Ulat grayak (Spodoptera litura F.) adalah  hama kedelai (Glycine max L.). Pengendalian hama dilakukan dengan penggunaan galur tahan hama melalui seleksi karakteristik morfologi daun (kerapatan trikoma). Penelitian ini bertujuan untuk mengetahui intensitas kerusakan daun oleh serangan hama, dan korelasi antara kerapatan trikoma daun kedelai dengan ketahanan galur terhadap serangan ulat grayak. Penelitian ini dibagi menjadi 2 tahap yaitu penelitian deskriptif dan eksperimental menggunakan Rancangan Acak Lengkap (RAL), 2 kali ulangan. Apabila terdapat perbedaan nyata maka dilanjutkan dengan uji Beda Nyata Terkecil (BNT) 5%. Perlakuan yang digunakan adalah 45 galur kedelai dan S. litura instar II sejumlah 450 ekor. Data hasil penelitian meliputi nilai intensitas kerusakan daun, ketahanan galur oleh serangan ulat grayak dan kerapatan trikoma. Hasil penelitian menunjukkan bahwa berdasarkan nilai intensitas kerusakan daun, ketahanan  45 galur kedelai (Glycine max L.)  dapat dikelompokkan menjadi 4 galur kategori sangat tahan (ST), 4 galur tahan (T), 9 galur agak tahan (AT), 24 galur rentan (R), dan  3 galur sangat rentan (SR). Perbedaan galur kedelai (Glycine max L.)  berpengaruh nyata terhadap ketahanan dari serangan ulat grayak (S. litura). Berdasarkan kerapatan trikoma diketahui menunjukkan korelasi negatif dengan intensitas serangan ulat grayak (S. litura) yang berarti semakin tinggi kerapatan trikoma daun, maka semakin rendah intensitas serangan ulat grayak (S. litura).</p><p>Kata Kunci: Kedelai,  trikoma, ulat grayak <br /><br /></p>

scholarly journals Effects of insecticides on the common cutworm, Spodoptera litura (Fabricius) by the artificial diet-dip method

1998 ◽  
Vol 40 (0) ◽  
pp. 139-140
Author(s):  
Yumiko Taniyama ◽  
Minoru Negoro ◽  
Shoichi Kobayashi ◽  
Toshikazu Yamaoka ◽  
Manabu Shibao ◽  
...  
Keyword(s):  
Spodoptera Litura ◽  
Artificial Diet ◽  
Common Cutworm ◽  
The Common

scholarly journals Identification of transcriptome and fluralaner responsive genes in the common cutworm Spodoptera litura Fabricius, based on RNA-seq

BMC Genomics ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Zhong-Qiang Jia ◽  
Di Liu ◽  
Ying-Chuan Peng ◽  
Zhao-Jun Han ◽  
Chun-Qing Zhao ◽  
...  
Keyword(s):  
Spodoptera Litura ◽  
Rna Seq ◽  
Common Cutworm ◽  
The Common

scholarly journals Dispersal of the Common Cutworm, Spodoptera litura, Monitored by Searchlight Trap and Relationship with Occurrence of Soybean Leaf Damage

Insects ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 427
Author(s):  
Akira Otuka ◽  
Masaya Matsumura ◽  
Makoto Tokuda
Keyword(s):  
Linear Regression ◽  
Spodoptera Litura ◽  
Pheromone Trap ◽  
Leaf Damage ◽  
Coefficient Of Determination ◽  
Female Ratio ◽  
Common Cutworm ◽  
Advantages And Disadvantages ◽  
Soybean Leaf ◽  
The Common

The common cutworm, Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is a major pest of soybean. Pheromone traps are used to monitor male adults, but the catch peaks do not always predict leaf damage in soybean fields. Thus, there is no accurate means of forecasting soybean damage, and insecticide is applied on the basis of farmers’ observations of actual damage in fields. To understand the occurrence of soybean leaf damage, the dispersal of S. litura in a soybean field in southwestern Japan was preliminarily investigated using a searchlight trap in comparison to a pheromone trap at one location, from August to mid-October in 2016–2018. To determine the relationship between pest arrival and crop damage, trap catch numbers and the number of soybean leaves damaged by 1st-instar larvae were examined by separately comparing raw numbers and cumulative numbers. The raw catch numbers of the two trap types in August and September 2016 and 2018 preceded subsequent damage peaks by an average of 5.3 days. This temporal difference coincided with the estimated duration of the egg stage plus an assumed mating period. Furthermore, the cumulative catch numbers of the two traps in August and September were linearly associated with cumulative damaged leaves in the same period in each year and in the three-year period. The coefficient of determination (R2) of linear regression between the cumulative catch numbers of the searchlight trap and the cumulative damaged leaves for the three-year period was much higher than that between the cumulative catch of the pheromone trap and cumulative damage. This suggests that soybean leaf damage is closely linked to the number of S. litura arrivals at the survey site. Thus, the searchlight trap captured S. litura arrivals better than the pheromone trap. As the linear regression function of the cumulative catch of the searchlight trap for the three-year period was tentatively correlated with a prefectural economic injury level for soybean fields, it might be feasible to predict S. litura-induced soybean damage using searchlight traps. The cumulative female catch number of the searchlight trap was also linearly associated with damaged leaves, but the coefficient of determination was generally lower than that with the cumulative total catch. The female ratio of searchlight trap catches in September was <0.5 in contrast to S. litura migrating overseas (>0.5). The advantages and disadvantages of the two trapping methods, as well as necessary further studies are discussed. Our findings provide a foundation for S. litura monitoring with searchlight traps.

Overseas migration of the common cutworm, Spodoptera litura (Lepidoptera: Noctuidae), from May to mid-July in East Asia

2013 ◽  
Vol 48 (2) ◽  
pp. 131-140 ◽  
Author(s):  
Sumio Tojo ◽  
Masasuke Ryuda ◽  
Takeshi Fukuda ◽  
Tadashi Matsunaga ◽  
Dong-Ro Choi ◽  
...  
Keyword(s):  
East Asia ◽  
Spodoptera Litura ◽  
Common Cutworm ◽  
The Common ◽  
Lepidoptera Noctuidae
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