Selecting for Coupling-Phase Recombination Between Potyvirus Resistance and White Endosperm Colour in Maize Preferred by Farmers in Sub-Saharan Africa (SSA)
نام عام مواد
[Article]
نام نخستين پديدآور
Victoria B. Bulegeya, Mark W. Jones, Tryphone G. Muhamba, et al.
وضعیت نشر و پخش و غیره
محل نشرو پخش و غیره
Leiden
نام ناشر، پخش کننده و غيره
Brill
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Maize lethal necrosis (MLN) disease caused by a combined infection of Maize chlorotic mottle virus (MCMV) and any cereal infecting potyvirus is a threat to food security in Sub-Saharan Africa (SSA). Resistance to potyvirus has been extensively studied and Mdm1 gene for potyvirus resistance on chromosome 6 of maize is linked to Y1 gene for maize endosperm colour. This study is aimed at selecting for coupling-phase recombination of potyvirus resistance and white endosperm colour. White susceptible maize lines CML333 and CML277 were crossed with a yellow resistant line, Pa405, to produce F1 and F2 progenies. Progenies were screened using molecular markers to recover 22 white endosperm recombinants. 22 selections were advanced to F3 recombinant families, and 10 were assayed for their responses to Maize dwarf mosaic virus (MDMV) and Sugarcane mosaic virus (SCMV). Four families segregated for SCMV resistance, selection of homozygous recombinants within these families will provide lines appropriate for improving lines with resistance to SCMV and MLN resistance in SSA. Maize lethal necrosis (MLN) disease caused by a combined infection of Maize chlorotic mottle virus (MCMV) and any cereal infecting potyvirus is a threat to food security in Sub-Saharan Africa (SSA). Resistance to potyvirus has been extensively studied and Mdm1 gene for potyvirus resistance on chromosome 6 of maize is linked to Y1 gene for maize endosperm colour. This study is aimed at selecting for coupling-phase recombination of potyvirus resistance and white endosperm colour. White susceptible maize lines CML333 and CML277 were crossed with a yellow resistant line, Pa405, to produce F1 and F2 progenies. Progenies were screened using molecular markers to recover 22 white endosperm recombinants. 22 selections were advanced to F3 recombinant families, and 10 were assayed for their responses to Maize dwarf mosaic virus (MDMV) and Sugarcane mosaic virus (SCMV). Four families segregated for SCMV resistance, selection of homozygous recombinants within these families will provide lines appropriate for improving lines with resistance to SCMV and MLN resistance in SSA.
مجموعه
تاريخ نشر
2019
توصيف ظاهري
39-48
عنوان
Afrika Focus
شماره جلد
32/2
شماره استاندارد بين المللي پياييندها
2031-356X
اصطلاحهای موضوعی کنترل نشده
اصطلاح موضوعی
Genetic Recombination
اصطلاح موضوعی
Maize Lethal Necrosis (MLN)
اصطلاح موضوعی
Potyvirus Resistance
اصطلاح موضوعی
Sub-Saharan Africa
اصطلاح موضوعی
White Maize
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )