PENGARUH KERAPATAN BULU DAUN PADA TANAMAN KAPAS TERHADAP KOLONISASI Bemisia tabaci GENNADIUS

INDRAYANI, I G.A.A.; Sulistyowati, Emy

doi:10.21082/jlittri.v11n3.2005.101-106

Cited by 5 publications

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“…Trichome density is a main morphological characteristic related to plant resistance to sucking pests and has a positive correlation with the colonization of sucking pests (Aslam & Saeed, 2004). Previous research by Indrayani and Sulistyowati's (2005) also reported that the leaves with a high trichome density were positively correlated with the increase of B. tabaci population compared to leaves with fewer trichomes. High correlation coefficients of the B. tabaci eggs, nymphs, and adults showed that the leaf trichomes influenced the development of B. tabaci.…”

Section: The Relationship Between the Leaf Morphological Characteristmentioning

confidence: 69%

Correlation between Epidermis Thickness, Leaf Trichome Length and Density with the Whitefly Bemisia tabaci Population on Five Local Soybean Cultivars

Lutfi

Hidayat

Maryana

2019

JPTI

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Soybeans compsumsion in Indonesia is about 2.7 million ton, while the national production is only about 0.7 million ton per year. There are some problems in the soybean production in Indonesia, including pests and diseases. Whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae), is one of the important pests in soybeans causes a significant loss of yields. Developing soybean cultivars resistant to whitefly is one of method to reduce the production loss. This study aimed to determine the relationship between the physical characteristics of lower surface leaves and B. tabaci population on five local soybean cultivars. The experiments were conducted in the IPB greenhouse by Completely Randomized Design (RCD) using five soybean cultivars (Anjasmoro, Dena-1, Detam-3, Devon-1, and Wilis) with 3 replicates. Three plants of each cultivar were planted in a polybag, put under a cage, and after one week then infested with 5 female whiteflies. The parameters observed in this study were leaf epidermal thickness; density and length of trichome on lower leaf surface; and the number of egg, nymph, and adult of the whitefly. Observations were carried out every week, from 1−7 weeks after the plant was infested with the whitefly. The population of whitefly was affected by trichome density and length, as well as by the epidermal thickness of the lower leaf surface. The infestation of B. tabaci was higher in the soybean cultivars with denser and longer leaf trichomes, and thinner epidermal of the lower leaf surface. This result of this research suggests that it is necessary to include the characteristics of leaf trichome and epidermal thickness in the breeding program to produce soybean cultivars that are superior in productivity and resistant to whitefly.

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Section: The Relationship Between the Leaf Morphological Characteristmentioning

confidence: 69%

Correlation between Epidermis Thickness, Leaf Trichome Length and Density with the Whitefly Bemisia tabaci Population on Five Local Soybean Cultivars

Lutfi

Hidayat

Maryana

2019

JPTI

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“…Salah satu cara untuk menghindari serangan hama tersebut antara lain dengan menanam varietas kapas yang tahan hama wereng (HASNAM et al, 2004), dan merupakan salah satu faktor penting bagi keberhasilan penerapan PHT kapas (NURINDAH et al, 2004). Selain itu, keuntungan menanam varietas tahan wereng dapat mengurangi pemakaian pestisida atau waktu aplikasinya ditunda (INDRAYANI dan SULISTYOWATI, 2005). Apabila pemakaian pestisida dapat dihindari dan volume pemakaian dapat ditekan, maka 132…”

Section: Pendahuluanunclassified

“…Penggunaan varietas kapas yang daunnya berbulu lebat merupakan cara efektif untuk mengendalikan hama pengisap daun (SINGH, 2004). Berkaitan dengan serangan hama pengisap lainnya, yaitu Bemisia tabacci, ternyata kerapatan bulu daun berkorelasi positif dengan kolonisasi hama tersebut (INDRAYANI dan SULISTYOWATI, 2005). Semakin tinggi kerapatan bulu daun, maka semakin tinggi pula kolonisasi Bemisia tabacci.…”

Section: Pendahuluanunclassified

PENDUGAAN AKSI GEN DAN DAYA WARIS KETAHANAN KAPAS TERHADAP Amrasca biguttula

MACHFUD¹,

Sulistyowati

2020

j. penelitian tanam. industri

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ABSTRAKAmrasca biguttula merupakan salah satu hama utama kapas yangmampu menurunkan hasil secara nyata. Penggunaan varietas tahan hamasecara genetik merupakan salah satu dari sekian metode pengendalianyang efektif untuk menurunkan kerusakan hama. Penelitian bertujuanuntuk mengetahui aktivitas kerja gen dan daya waris gen yang mengen-dalikan sifat ketahanan terhadap hama pengisap daun A. biguttula.Penelitian dilakukan di Karangploso, Kabupaten Malang, Jawa Timur daribulan Mei sampai Oktober 2006. Pengujian dilakukan terhadap 17genotipe yang terdiri dari (a) tiga varietas tetua jantan berbulu lebat yaituLRA 5166, SRT-1, dan Laxmi; (b) dua varietas tetua betina yangditingkatkan ketahanannya yaitu Kanesia-8 dan Kanesia-9; (c) enamgenotipe generasi F1 hasil persilangan tetua jantan dan betina tersebut diatas, dan d) enam genotipe generasi F2 yang merupakan keturunan darihasil persilangan F1. Percobaan disusun dalam rancangan acak kelompok(RAK), diulang 3 kali. Hasil penelitian menunjukkan bahwa tiga genotipeF1 dari pasangan persilangan Kanesia-8 x LRA 5166, Kanesia-9 x LRA5166, dan Kanesia-8 x Laxmi menunjukkan penampilan gen yangmengatur kelebatan bulu daun bersifat dominansi sebagian negatif.Sedangkan penampilan gen pada pasangan persilangan Kanesia-8 x SRT-1, Kanesia-9 x SRT-1, dan Kanesia-9 x Laxmi adalah dominansi sebagianpositif. Nilai heritabilitas dalam arti luas dari gen yang mengatur kelebatanbulu daun pada empat pasangan persilangan Kanesia-8 x SRT-1, Kanesia-9 x SRT-1, Kanesia-8 x Laxmi, dan Kanesia-9 x Laxmi adalah tinggi,sedangkan dua pasangan persilangan Kanesia-8 x LRA 5166 dan Kanesia-9 x LRA 5166 nilai heritabilitasnya sedang. Korelasi nyata terjadi antarajumlah bulu daun, populasi nimfa dan nilai JRI. Tingkat kehadiranpopulasi nimfa wereng dan nilai JRI sangat dipengaruhi oleh kerapatanbulu daun.Kata kunci : Gossypium hirsutum, Amrasca biguttula, kerapatan bulu,ketahanan, daya warisABSTRACTEstimation of Gene Action and Resistance Heritability ofCotton to Amrasca biguttulaAmrasca biguttula is one of main pests attacking cotton that causessignificant yield loss. The use of resistant varieties is genetically aneffective way to control the pest. An experiment was conducted to studythe activity and heritability of gene(s) responsible for controlling cropresistance to jassid, A. biguttula. The test involved 17 genotypes consistingof (a) three varieties with high trichome density as male parents i.e. LRA5166, SRT-1, and Laxmi; (b) two varieties to be improved their resistanceto jassid as female parents i.e. Kanesia-8 and Kanesia-9; (c) six genotypesof F1 generation resulted from crossing between male and female parents,and d) six genotypes of F2 generation resulted from selfing of genotypes.The test was arranged in randomized block design with three replications.Experimental result showed that the action of gene(s) responsible intrichome density or leaf pubescent of three F1 genotypes i.e. Kanesia-8 xLRA 5166, Kanesia-9 x LRA 5166, and Kanesia-8 x Laxmi were partlynegative dominance, whereas those of F1 genotypes of Kanesia-8 x SRT-1, Kanesia-9 x SRT-1, and Kanesia-9 x Laxmi were partly positivedominance. The heritability of that gene(s) in Kanesia-8 x SRT-1,Kanesia-9 x SRT-1, Kanesia-8 x Laxmi, and Kanesia-9 x Laxmicombinations were high, whereas those in Kanesia-8 x LRA 5166 andKanesia-9 x LRA 5166 combinations were medium. A significantcorrelation was observed between trichome density, nymph population,and JRI value, in which nymph population and JRI were significantlyinfluenced by trichome density.Key words : Gossypium hirsutum, Amrasca biguttula, gene action,heritability

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“…Namun, kenyataanya B. tabaci tidak hanya ditemukan pada pertanaman cabai, tetapi pada tanaman lain yang tumbuh di sekitarnya. Kutukebul spesies ini diduga memiliki preferensi pemilihan inang untuk meletakkan telur (Indrayani & Sulistyowati 2005). Mound (1963) melaporkan beberapa inang B. tabaci, yaitu tembaku, singkong, kapas, centrosema atau butterfly peas, dan kacang kapri di Nigeria dan menemukan adanya variasi morfologi B. tabaci.…”

Section: Pendahuluanunclassified

Variasi morfologi puparium Bemisa tabaci (Gennadius) (Hemiptera: Aleyrodidae) pada berbagai inang dan ketinggian tempat dari daerah endemik penyakit kuning cabai di Wilayah Sundaland

Rahayuwati

Hidayat

2020

J Entomol Indones

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Bemisia tabaci (Gennadius) is one of polyphagous whitefly that has been known as gemini virus vector. The identification of B. tabaci is carried out based on pupal case or puparium of red eye fouth stage. The morphological variation of B. tabaci puparium leads to the difficulties on species identification. This research was aimed to study the morphological variations of B. tabaci puparium that has been found in various host plants at various altitude. Samples of B. tabaci puparium were obtained from Sundaland endemic area of pepper yellow curl disease virus endemic areas including West Sumatra, West Java, Central Java, East Java, Bali, South Kalimantan. Slides-mounted were made from puparium and then identification was carried out to species. Observations have been conducted on B. tabaci puparial size, puparial shape, number of elongated dorsal setae, and caudal setae size. Canonical correlation analysis was applied to determine the factors that affected the puparium morphological variation. Based on the results, there were four variations of puparium: oval, oval with 1–2 indentations, oval with more than 3 indentations, and sea shell shapes. The variation observed on dorsal setae number, puparial shape, and size of B. tabaci were supposed due to the induction of trichomes on the leaves surface. Puparium variations were affected by host plants instead of altitude.

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PENGARUH KERAPATAN BULU DAUN PADA TANAMAN KAPAS TERHADAP KOLONISASI Bemisia tabaci GENNADIUS

Cited by 5 publications

References 0 publications

Correlation between Epidermis Thickness, Leaf Trichome Length and Density with the Whitefly Bemisia tabaci Population on Five Local Soybean Cultivars

Correlation between Epidermis Thickness, Leaf Trichome Length and Density with the Whitefly Bemisia tabaci Population on Five Local Soybean Cultivars

PENDUGAAN AKSI GEN DAN DAYA WARIS KETAHANAN KAPAS TERHADAP Amrasca biguttula

Variasi morfologi puparium Bemisa tabaci (Gennadius) (Hemiptera: Aleyrodidae) pada berbagai inang dan ketinggian tempat dari daerah endemik penyakit kuning cabai di Wilayah Sundaland

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