Screening And Breeding Sorghum For Midge Resistance uri icon

abstract

  • Sorghum midge, Contarinia sorghicola Coq. i s the most Importantpest of grain sorghum, Sixteen gennplssm and 14 breeding lines showlngstable resistance to midge have been i d e n t i f i e d . Progress has henmade i n developing improved midge resistant breeding lines wlthacceptable y i e l d and grain qualit). Sorghum variety, ICSV 197 (PM11344) has shown high levels of midge resistance over seasons andlocations. I t s y i e l d potential i s comparable to some of the comnercialcultivars. PI4 6751, PH 7061 and PM 8787-2 have been i d e n t i f i e d asnon-restorers. Midge resistance i s a quantatively inheri ted t r a i tgoverned by both addi ti ve and nonadd i ti ve , but predominantly nonaddi ti vegenes. Dominant genes contributed most towards midge resistance followedby additive x additive, additive x dominance, and additive gene effects

publication date

  • 1986