Brief communication. Genetic analysis of a short-petiolule-type soybean, LN89-3502TP

Authors: TR Cary; CD Nickell

Source: Journal of Heredity, Volume 90, Number 2, March 1999 , pp. 300-301(2)

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Abstract:

An abnormal-leaf soybean [Glycine max (L.) Merr.] plant was observed in an F<INF>4:8</INF> line at Urbana, Illinois, in the summer of 1992. Petiolules of the plant were shorter than normal and leaflet margins curled uniformly upward forming a cupped-shaped leaf. All progeny of the single plant exhibited leaf cupping. Laboratory analysis showed an absence of soybean mosaic and tobacco ringspot virus in the plants. Seeds from the progeny were bulked and designated line LN89-3502TP. Further observation of LN89-3502TP revealed dense pubescence on the short petiolule plants. The objective of this study was to determine the inheritance of the short petiolule trait of LN89-3502TP. In F<INF>2</INF> populations derived from LN89-3502TP crossed with normal leaf-type cultivars, three petiolule phenotypes (short, intermediate, and normal) segregated in a 1:2:1 ratio. The 1:2:1 ratio was confirmed in the F<INF>2:3</INF> families. These ratios indicate the short petiolule trait is controlled by a single gene showing incomplete dominance that we designated lc.

Document Type: Research article

Publication date: 1999-03-01

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Journal of Heredity covers organismal genetics: gene action, regulation, and transmission in both plant and animal species, including the genetic aspects of botany, cytogenetics and evolution, zoology, and molecular and developmental biology.