Previous nomenclature and symbolization:
laxatum 12, lax 12 (7, 10, 12, 13).Inheritance:
Recessive to normal (10, 13, 14).Description:
Located on chromosome 7 very close (absolute linkage) to lep-e (15).
Grows secondary and tertiary shoots from its accordian-like basal rachis internodes. Spike internodes about 12% longer than normal.Origin of mutant:
Manifestation possibly day-length dependent (10, 13).
1956 after resting Bonus seed treated with 13,600rad x-rays.Mutational events:
abr1a (= lax 3), abr1b (= lax 12), abr1c (= lax 337).Mutant used for description and seed stock:
abr1b and abr1a (5) in Bonus and abr1c (spike internodes +25%) in Foma.References: 1. Ehrenberg, L., Gustafson, Å., and Lundqvist, U. 1956. Acta Chem. Scand. 10:492-494.
2. Ehrenberg, E. and Lundqvist, U. 1957. Hereditas 43:390-402.
5. Stoy, V. and Hagberg, A. 1967. Hereditas 58:359-384.
7.Gustafsson, Å., Hagberg, A., Lundqvist, U. and Persson, G. 1969. Hereditas 62:409-414.
9. Hermelin, T. 1970. Hereditas 65:203-226.
10. Larsson, H.E.B. 1981. BGN 11:25-28.
12. Søgaard, B., Nilan, R.A. and Wettstein, D.von 1984. BGN 14:140-172.
13. Larsson, H.E.B. 1985. Hereditas 103:239-253.
14. Larsson, H.E.B. 1985. Heredita3 103:255-267.
15. Larsson, H.E.B. 1985. Hereditas 103:269-279.
Prepared:
H.E.B. Larsson and U. Lundqvist 1986.