Pewarisan Sifat Ketahanan Cabai terhadap Infestasi Aphis gossypii Glover (Hemiptera: Aphididae)

Abstract

Aphis gossypii Glover is one of the major pests of chili pepper and can cause damage up to ABSTRAKKutudaun Aphis gossypii Glover adalah salah satu hama pengganggu penting dalam produksi tanaman cabai. Saat populasi kutudaun tidak terkendali dapat menyebabkan kerusakan tanaman cabai hingga 65%. Tujuan penelitian ini adalah mempelajari kendali genetik pewarisan sifat ketahanan cabai (Capsicum annuum L.) terhadap infestasi A. gossypii. Set populasi enam generasi (P 1 , P 2 , F 1 , F 2 , BC P1 , BC P2 ) dibentuk dari persilangan tetua P 1 (IPB C20) dengan nilai infestasi rendah dan tetua P 2 (IPB C313) yang bernilai infestasi tinggi. Metode skrining yang digunakan adalah choice test. Jumlah kutudaun yang diinfestasikan adalah dua ekor per daun pada bibit berumur lima minggu. Hasil penelitian menunjukkan bahwa karakter ketahanan cabai terhadap infestasi kutudaun berdasarkan jumlah A. gossypii per tanaman ialah tetua rentan overdominan terhadap tetua tahan dan dikendalikan oleh banyak gen. Gen-gen pengendali ketahanan terhadap infestasi A. gossypii adalah resesif. Nilai heritabilitas arti luas tergolong besar untuk infestasi kutudaun per tanaman, kutudaun per daun, dan kutudaun bersayap, sedangkan heritabilitas arti sempit tergolong sangat rendah pada infestasi kutudaun per tanaman dan per daun yang ditunjukkan oleh proposi ragam dominan lebih besar dibandingkan ragam aditif.Kata kunci: aksi gen, Capsicum annuum, heritabilitas, ragam dominan 1* Program Studi Agroteknologi, Universitas Gunadarma. Jl. Raya Margonda No.

Bio-priming of Aceh local chili seeds in the effort to increase production and begomo virus resistance

“…Note: Numbers Followed by the Same Letter in the Same Column Are Not Significantly Different Based on the Honestly Significant Difference Test (BNJ) level 0.05 [2]stated that the character of a plant that is taller and does not touch the ground can reduce water splashing from the soil to the fruit which is one source of disease infection. [10]stated that the fruit from higher plants does not touch the ground so that it can reduce water splashing from the soil to the fruit which is one source of fungal infection.…”

“…CKD061 was able to increase viability and seed vigour of local upland rice cultivars. The treatment showed that the seed vigour index increased by 133% in the Waburi-buri cultivar and 127% in the Daindo Mornene cultivar when compared to the control [9] Increased productivity of chili can be done by improving genetic potential through the formation of hybrid varieties and the use of superior varieties [10]The use of bio-priming on local varieties of Aceh will increase germination vigour, growth and will maximize yield potential and resistance to Begomovirus.…”

Keragaman Genetik 19 Genotipe Cabai Rawit Merah (Capsicum frutescens) serta Ketahanannya terhadap Kutu Daun (Aphis gossypii)

“…Stadia kutu daun yang diinfestasikan adalah imago tak bersayap sebanyak 5 ekor per tanaman. Bibit cabai rawit merah yang digunakan berumur 5 minggu setelah semai (MSS) atau telah memiliki 4-6 helai daun (Daryanto et al, 2017b), selanjutnya tanaman ditutup sungkup plastik berdiameter dan tinggi 30 cm serta tertutup kain dengan kerapatan 50 mesh selama 4 minggu.…”

Hayman’s Diallel Analysis for Physiological Traits in Chili (Capsicum Annuum L.) Seeds

“…Diallel cross analysis with Hayman's approach has widespread use in studying the genetic basis of various traits in chili, including genetic parameters' evaluation in early generations for begomovirus resistance and agronomic features (Ganefianti et al, 2015), host plant resistance in chili pepper (Daryanto et al, 2017), yield and spiciness components (Sahid et al, 2021), bacterial wilt disease resistance in chili (Dhillon et al, 2022), evaluation of secondary metabolites in chili (Syukur et al, 2023), and rice genotypes for yield-related traits (Riyanto et al, 2023).…”