Diallel Analysis of Resistance in Sorghum to Greenbug Biotype E: Antibiosis and Tolerance

Dixon, A. G. O. and Bramel-Cox, P.J. and Harvey, T.L. (1990) Diallel Analysis of Resistance in Sorghum to Greenbug Biotype E: Antibiosis and Tolerance. Crop Science, 30. pp. 1055-1059.

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Abstract

Theg reenbo[gS chizaphisg raminu(mR ondani)hl as beenr ecognized as a majori nsect pest of sorghum[S orghumbi color (L.) Moenchin] the GreatP lainso f the USAsi nce 1968.B iotypeE has beenp rominensitn ce 1980a ndt welves ourceso f resistancew ithin the Sorghugmen ush aveb eenid entified.T heo bjectiveo f this study wast o investigatet he inheritanceo f resistancei n sorghuamm ong sevens ourceso f resistancaen dt hrees usceptibllein es for antibiosis andt olerancein volvingB iotypeE . A completde iallel matingi,n - cludingre ciprocalso,f thet en resistanat nds usceptibllein es of sorghumw ase valuatedin the growthch ambetro estimateh eterosis, generalc ombininagb ility (GCA)s,p ecific combininagb ility (SCA), maternanl ds pecificr eciprocaelf fectsf or seedlinga ntibiosis,a nd tolerancet o greenbuBg iotypeE . Them ajorityo f crosses between the resistants ourcesa nds usceptibllei nes showeidn termediarte - actionsa ndv ariousd egreeos f partiald ominanfcoer botha ntibiosis andt olerances, uggestingp olygeniicn heritanceC. ombinianbgi lity analysesr evealedth at GCAS,C Am, aternala, nds pecific reciprocal effects weres ignificantf or boths eedlinga ntibiosisa ndt olerance, but GCwAa sc learly moreim portanint determinintgo lerance

Item Type:	Article
Uncontrolled Keywords:	Greenbug, Biotype E
Author Affiliation:	Dep. of Agronomy,ThrockmortoHn all, KansasS tate Univ., Manhattan,KS 66506-5501
Subjects:	Plant Protection
Divisions:	Sorghum
Depositing User:	Mr Siva Shankar
Date Deposited:	20 Jun 2012 08:13
Last Modified:	20 Jun 2012 08:14
URI:	http://eprints.icrisat.ac.in/id/eprint/6128

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