My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in CS

  1. Vol. 9 No. 2, p. 232-235
     
    Received: Sept 18, 1968
    Published: Mar, 1969


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1969.0011183X000900020037x

Inheritance of Multifoliolate Leaves, Glabrous Leaves, and Petiolulate Leaflet Attachment in Crimson Clover, Trifolium incarnatum L.1

  1. W. E. Knight2

Abstract

Abstract

Inheritance of multifoliolate leaves, glabrous leaves, and petiolulate leaflet attachment was studied in the F1, F2, and F3 generations of crimson clover, Trifolium incarnatum L. Normal crimson clover has trifoliolate, pubescent leaves and sessile leaflet attachment. Inbred, recessive white-flowered lines were used as the female parent in studying these mutants: glabrous leaves (g); petiolulate leaflets (p); and multifoliolate leaflets (mI). Segregation ratios for multifoliolate leaves, glabrous leaves, and petiolulate leaflets fit expected segregation ratios of 3:1. Each of the characteristics studied appears to be controlled by a single recessive gene pair. Intermediate forms were not observed, an indication that only a single gene pair was involved in each mutant. One mutant was a double recessive with glabrous leaves and petiolulate leaflet attachment. Heterozygous F2 and F3 populations from the double recessive segregated on the basis of a 9:3:3:1 ratios as expected; thus showing independent inheritance for these two characters.

The following genetic symbols are proposed: G for pubescence, and g for glabrous; P for sessile leaflet attachment and p for petiolulate leaflet attachment; and Ml for trifoliolate leaves and ml for multifoliolate leaves.

These characteristics should help determine effective hybridization in the crossing and breeding program. As more marker genes are accumulated, specific chromosomes and chromosomal regions can be identified. Some of these mutants will be of interest morphologically and of possible value as physiological indexes, e.g., multifoliolate leaves.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .