Effect of alien cytoplasm and fertility restorer genes on agronomic and physiological traits of Brassica juncea (L.) Czern. Issue 6 (16th August 2013)

• Record Type: Journal Article
• Authors: Chamola, Rohit; Balyan, Harindra S.; Bhat, Shripad R.; Chevre, A.‐M.
• Is Part Of: Plant breeding. Volume 132:Issue 6(2013)
• Page Start: 681
• Page End: 687
• Publication Date: 2013-08-16
• Subjects: Plant breeding -- Periodicals; 631.52
• DOI: 10.1111/pbr.12080
• Languages: English
• ISSNs: 0179-9541

Abstract

<abstract abstract-type="main" id="pbr12080-abs-0001"> <title>Abstract</title> <p>To assess the effect of alien cytoplasm and fertility restorer genes on agronomic and physiological traits in <italic>Brassica juncea</italic>, cytoplasmic male sterile (CMS) and fertility restorer lines involving five alloplasms in three nuclear backgrounds were constituted through repeated backcrossing. These lines were evaluated along with euplasmic lines for agronomic traits in field experiments. Respiration efficiency of <italic>in vitro</italic> cultured hypocotyls, and chlorophyll content in leaves were also estimated. Significant adverse effects of <italic>trachystoma</italic> and <italic>catholica</italic> cytoplasms on yield‐contributing traits and yield were noticed. The restorer gene corrected the floral defects in CMS <italic>trachystoma</italic> and restored yield to the level of euplasmic line, while it did so only partly in CMS <italic>catholica</italic>. Restorer genes had no adverse effect on traits in any of the systems. On the contrary, the <italic>Rf</italic> gene of <italic>moricandia </italic>CMS system exerted a positive effect on leaf chlorophyll content. Likewise, <italic>in vitro</italic> assay indicated the <italic>moricandia </italic>CMS system as vigorous. The <italic>moricandia </italic>CMS plants gave higher seed yield perhaps due to overall better vigour and higher leaf chlorophyll content.</p> </abstract>