II. 27. Origin and characteristic of telotrisomic for 3S (Triplo 3S) in barley. (1)
R. J. Singh and T. Tsuchiya. Department of Agronomy, Colorado State University, Fort Collins, Colorado 80523, U.S.A.
(1) Supported in part by USDA/SEA Competitive Research Grant 5901-0410-90334-0 to T. Tsuchiya.
A plant with 2n = 13 + 1 acro 3L3S + 1 telo 3S was obtained in the progeny of acrotrisomic plant 3L3S (Singh and Tsuchiya, 1981).
Four telotrisomic plants for the short arm of chromosome 3 (Triplo 3S) were obtained in the progeny of a plant with 2n = 13 + 1 acro 3L3S + 1 telo 3S (Singh and Tsuchiya, 1981).
These Triplo 3S plants grow vigorously in greenhouse. The telotrisomic for 3S showed normal green color compared to the pale green color of primary trisomic (Triplo 3) and telotrisomic for 3L (Triplo 3L). Most outstanding feature of the triplo 3S is the heavily haired leaf sheath in contrast to the hairy leaf blade surface in the Triplo 3 and Triplo 3L. The leaf blade surface of Triplo 3S does not show observable hairs. This characteristic of Triplo 3S would be useful in identifying this telotrisomic (3S) from a diploid sibling and/or other trisomics.
Reference:
Singh, R. J. and T. Tsuchiya. 1981. A novel compensating partial tetrasomic diploid plant of barley. BGN 11:66-68.