Article citationsMore >>

Sadeghian, S.Y., H.C. Becker and E. Johansson (1993) Inheritance of Bolting in 3 Sugar-Beet Crosses After Different Periods of Vernalization. Plant Breeding 110, 328-333.

has been cited by the following article:

Article

A New Locus Suppresses Bolting under Shortening Daylength in Sugar Beet

1Agronomy department, College of Agriculture, Assiut University, Assiut, Egypt


World Journal of Agricultural Research. 2015, Vol. 3 No. 5, 179-184
DOI: 10.12691/wjar-3-5-5
Copyright © 2015 Science and Education Publishing

Cite this paper:
Salah Fatouh Abou-Elwafa. A New Locus Suppresses Bolting under Shortening Daylength in Sugar Beet. World Journal of Agricultural Research. 2015; 3(5):179-184. doi: 10.12691/wjar-3-5-5.

Correspondence to: Salah  Fatouh Abou-Elwafa, Agronomy department, College of Agriculture, Assiut University, Assiut, Egypt. Email: elwafa75@aun.edu.egl

Abstract

Bolting tendency in sugar beet is a complex trait has been shown to be controlled by various environmental cues, including prolonged periods of cold temperatures over winter (vernalization) and photoperiod, and multiple genetic factors. Three loci (B, B2 and B4) which trigger bolting in the absence of vernalization were identified and genetically mapped in beet. B4 is linked to the B locus and promotes annual bolting independently of B. Here, genetic analysis of a large segregated F2 population derived from a cross between a biennial sugar beet and an annual beet accession phenotyped for bolting tendency under three environmental conditions, i.e., long day after vernalization, long day without vernalization and shortening daylength revealed the presence of a major gene which is linked to the gene B and suppresses bolting under unfavorable daylength (shortening daylength) and negatively affects bolting time.

Keywords