Inheritance of field resistance to sorghum charcoal rot and selection for multiple disease resistance

Rana, B S and Anahosur, K H and Rao, V J M and Parameshwarappa, R and Rao, N G P (1982) Inheritance of field resistance to sorghum charcoal rot and selection for multiple disease resistance. Indian Journal of Genetics and Plant Breeding, 42 (3). pp. 302-310. ISSN 0019-5200

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Abstract

Six segregating and nonsegregating generations of three R x S and two S x S crosses were studied for charcoal rot resistance under epiphytotic conditions. CSV-5 (148/168) was comparatively the most resistant parent. The F1 showed partial dominance of resistance. The resistance appears to be a polygenic threshold character governed by duplicate epistasis with low heritability (38%). The F3 progenies transgress the parental limits. In absence of absolute resistance for charcoal rot, selection 2 S.D. below population mean (S.I. = 1%) results in selecting resistant transgressive segregates. Charcoal rot, SDM and leaf rust inherit independently. It is possible to combine these characters through simultaneous selection by choosing rust resistant plants from the segregating F3 progenies possessing <1% SDM and <10% charcoal rot susceptibility

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Sorghum
Depositing User:	Ms K Syamalamba
Date Deposited:	05 Dec 2012 03:18
Last Modified:	20 Sep 2013 12:38
URI:	http://oar.icrisat.org/id/eprint/6262
Official URL:	http://indianjournals.com/ijor.aspx?target=ijor:ij...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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