Allelic relationships and inheritance of brown midrib trait in sorghum

Gupta, S C (1995) Allelic relationships and inheritance of brown midrib trait in sorghum. Journal of Heredity, 86 (1). pp. 72-74. ISSN 0022-1503

PDF - Published Version Restricted to ICRISAT users only Download (1MB) | Request a copy

Abstract

Four naturally occurring brown midrib mutants in sorghum identified in 1989 in germplasm from Malawi and 3 brown midrib lines previously developed at Purdue University, Indiana, USA through induced mutations (bmr-6, bmr-12 and bmr-18) were considered in this study. Allelism tests in these 7 lines revealed that the 4 naturally occurring brown midrib lines were allelic to each other and to bmr-6. These 5 lines were non-allelic to bmr-12 and bmr-18, whereas bmr-12 and bmr-18 were allelic to at least those genes necessary to express the brown midrib trait. Inheritance of the trait in F1 and F2 populations derived from 15 crosses between 9 normal midrib parents and 3 brown midrib lines was then studied. Results revealed that the brown midrib trait is controlled, at least in part, by genes at 2 or more independent loci in the nuclear genome of sorghum. There is a strong possibility that some modifying genes may affect the expression of this trait. In general, 15-45% of plants with brown midrib can be expected in F2 populations segregating for this character

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Sorghum
Depositing User:	Mr B K Murthy
Date Deposited:	09 Jun 2014 04:11
Last Modified:	09 Jun 2014 04:11
URI:	http://oar.icrisat.org/id/eprint/8091
Official URL:	http://jhered.oxfordjournals.org/content/86/1.toc
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	the author is grateful to Dr. J. D. Axtell of Purdue University and Dr. C.F.B.Chigwe of the Uniersity of Malawi for supplying the seed of brown midrib sorghum lines.
Links:	Google Scholar

View Statistics

Actions (login required)

View Item