Pemetaan QTL Resistensi Tanaman Jagung terhadap Penyakit Bulai Di Bogor

Azrai, Muhammad; Murdaningsih, H K; Yuwariah, Yuyun; Moeljopawiro, Sugiono; Ruswandi, Dedi

doi:10.24198/zuriat.v13i2.6747

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Downy mildew conidia germinate at midnight and infects after germinating in guttation dew droplets at the growing point of the leaf base of maize plants. The spores of P. maydis are rounded [14], (17-23x27-39 nm) in diameter, and P. philippinensis are slightly oval, (21x27-38 nm) in diameter [23]. The two species have been reported to have different levels of virulence when infecting maize plants [24].…”

Section: Downy Mildew Infection Dynamics (P Philippinensis and P Maydis)mentioning

confidence: 99%

“…The presence of early sources of inoculum, due to the planting of susceptible maize varieties, and non-consistent planting patterns in each maize-growing region means that downy mildew is always present and remains a threat to meeting Indonesia's production targets. Early infection, in susceptible varieties, can cause yield losses of around 90% [5,6].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic response of hybrid maize line to downy mildew caused by Peronosclerospora spp. infection

Pakki,

Sebayang,

Mirsam

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Maize is the second staple food commodity in Indonesia. Apart from being the main source of carbohydrates and protein, the production of maize continues to increase along with the escalation of population growth and animal feed requirements in the last few years. The potential to increase the national production of maize is still feasible because of the yield gap between the potential yields of new superior varieties and the level of yields obtained by farmers. The yield gap caused by biotic stress in maize is mainly caused by pathogens such as downy mildew due to Peronosclerospora spp. Downy mildew distribution is sporadic that can infect a wide area. In Indonesia, it spreads widely and significantly reduces yields in the areas of maize production centres in East Java, Central Java, South Sulawesi, North Sulawesi, Gorontalo, Lampung, and Sumatera. These obstacles can be overcome by integrated pest and disease control technology. One strategy is to discover downy mildew-resistant varieties that can be combined with other control treatments. The phenomenon of resistance to downy mildew infection of several hybrid maize strains began to be detected in the vegetative growth phase, with symptoms beginning at 14 days after planting (DAP), increasing with plant age, and reaching its peak after 28-35 DAP and then the symptoms will gradually disappear until no infection after 42 HST. This study analyses the resistant maize varieties from 2020 to 2022. The data showed the susceptible comparison variety (Anoman) was infected with 88.94% to 100%. In 2020, BMD73 showed a resistant reaction to Philippinensis species, other strains were classified as susceptible in P. maydis except BMD 76. All strains showed highly susceptible and susceptible reactions. In 2021, in P. philippinensis all strains FCP10-FCP16 showed a resistant reaction, but line FCP10-FCP16 had a resistance response that was classified as moderately resistant to P. maydis. The incidence of genetic response in 2022, except BMD86, strains BMD81-BMD85 were classified as resistant, as well as in the P. maydis endemic area all strains showed the same reaction.

show abstract

Section: Downy Mildew Infection Dynamics (P Philippinensis and P Maydis)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%