NDLI: Characterization of fs10.1, a major QTL controlling fruit elongation in Capsicum

Content Provider	Springer Nature Link
Author	Borovsky, Yelena Paran, Ilan
Copyright Year	2011
Abstract	We previously identified fs10.1 as a major QTL controlling fruit shape (index of length to width) in an interspecific F2 cross of Capsicum annuum (round fruit) × C. chinense (elongated fruit) in pepper. To more precisely map and characterize the QTL, we constructed near-isogenic lines for fs10.1 and mapped it in a BC4F2 population. In this population, fs10.1 segregated as a Mendelian locus and mapped 0.3 cM away from the closest molecular marker. We further verified the effect of fs10.1 in an F2 population from an independent cross between elongated- and conical-fruited parents. To identify additional allelic variation at fruit shape loci, we screened an EMS-mutagenized population of the blocky-fruited cv. Maor and identified the mutant E-1654 with elongated fruit. This fruit shape mutation was mapped to the fs10.1 region and was determined to be allelic to the QTL. By measuring fruit shape of near-isogenic lines for fs10.1 during fruit development, we found that the shape of the fruit is determined primarily in the first 2 weeks after anthesis. Histological measurements of cell size and cell shape in pericarp sections of fruits of the isogenic lines throughout fruit development indicated that the shape of the fruit is determined primarily by cell shape and that the development of fruit shape is correlated with cell shape.
Starting Page	657
Ending Page	665
Page Count	9
File Format	PDF
ISSN	00405752
Journal	Theoretical and Applied Genetics
Volume Number	123
Issue Number	4
e-ISSN	14322242
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-05-21
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biotechnology Plant Genetics & Genomics Plant Breeding/Biotechnology Biochemistry Plant Biochemistry Agriculture
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Biotechnology Agronomy and Crop Science

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