A Database for Triticeae and Avena
Faculty of Agriculture, 1-1 Yanagido, Gifu 501-1193 Japan.
The genes controlling several recessive traits have been introduced
into the genetic background of the durum wheat LD222. The following
lines were backcrossed six times, and one of the lines was utilized
in the experimental work: (1) two Chlorina mutants (on 7A and
7B), (2) a double recessive yellow mutant, (3) nonglaucousness
(on 2B), and (4) reduced height trait (on 4B).
Genes for long glume from a Chinese landrace, T. petropavlobskyi
and brittle rachis from T. turgidum subsp. dicoccoides (on 3A
and 3B, respectively) also were introduced into the LD222 genetic
background, although they required more backcrosses.
A set of NILs was developed in the genetic background of Novosibirskaya
67 (N67) by S.F. Koval, Russian Federation. Novosibirskaya 67
grows well in the climate at Gifu. The following traits were
introduced into the N67 background; however, they will require
more backcrosses: brittle rachis from T. turgidum subsp.
dicoccoides (on 3A and 3B) and T. tibetanum (on
3D), semi-brittle rachis from T. yunnanennse, tenacious
glume from T. tibetanum (on 2D) and T. yunnanennse,
long glume from T. ispahanicum (7B) and T. petropavlobskyi,
and chlorina from the CDd2 mutant (on 7B).
TOHOKU NATIONAL AGRICULTURAL EXPERIMENT
Ministry of Agriculture, Forestry and Fisheries, Morioka,
Iwate 020-0198, Japan.
In Japan, wheat breeding initially started at the National
Agriculture Experimental Station in the early part of the 20th
century. The Norin numbering system was used to designate the
variety of wheat. The Norin varieties are major bread and cultivated
wheats in Japan and are very important for Japanese wheat production.
Wheat seed proteins were extracted in a Tris-HCl buffer (pH6.8)
containing SDS and separated by SDS-PAGE. The HMW-glutenin subunit
were resolved into three to five bands, each with its own electrophoretic
mobility. Table 1 shows the HMW-glutenin subunit compositions
in Japanese hexaploid wheat varieties.