Items from Japan.

ITEMS FROM JAPAN

 

GIFU UNIVERSITY

Faculty of Agriculture, 1-1 Yanagido, Gifu 501-1193 Japan.

 

N. Watanabe.

 

Development of near-isogenic lines in durum wheat: further progress.

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.

 

Development of near-isogenic lines in hexaploid wheat.

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 STATION

Ministry of Agriculture, Forestry and Fisheries, Morioka, Iwate 020-0198, Japan.

 

H. Nakamura.

 

Identification of Japanese commercial varieties with respect to HMW-glutenin subunit composition.

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.

Table 1. Identification of 131 Japanese commercial varieties and their HMW-glutenin subunit composition.
 Subunit composition  Variety
 1, 7+8, 2+12  Norin 131
 1, 7+8, 3+12  Norin 21, Norin 42
 1, 7+8, 4+12  Norin 8, Norin 24, Norin 82, Norin 108
 1, 7+8, 2.2+12  Norin 41, Norin 59, Norin 96
 1, 7+9, 4+12  Norin 17, Norin 31, Norin 38, Norin 89
 1, 6+8, 4+12  Norin 115
 1,1 7+18, 2+12  Norin 130
 2*, 7+8, 2+12  Norin 87, Norin 91, Norin 107, Norin 119
 2*, 7+8, 2.2+12  Norin 60, Norin 61, Norin 62, Norin 92, Norin 93, Norin 99, Norin 103, Norin 105, Norin 110, Norin 112, Norin 123, Norin 124
 2*, 7+9, 5+10  Norin 35
 2*, 13+19, 2+12  Norin 111
 null, 7+8, 2+12  Norin 1, Norin 2, Norin 3, Norin 4, Norin 5, Norin 6, Norin 7, Norin 9, Norin 10, Norin 13, Norin 14, Norin 18, Norin 25, Norin 27, Norin 29, Norin 32, Norin 33, Norin 34, Norin 36, Norin 37, Norin 39, Norin 40, Norin 44, Norin 45, Norin 46, Norin 47, Norin 48, Norin 51, Norin 52, Norin 55, Norin 56, Norin 58, Norin 66, Norin 67, Norin 68, Norin 70, Norin 71, Norin 73, Norin 74, Norin 77, Norin 78, Norin 79, Norin 80, Norin 81, Norin 85, Norin 86, Norin 88, Norin 90, Norin 94, Norin 97, Norin 100, Norin 101, Norin 102, Norin 109, Norin 113, Norin 116, Norin 118, Norin 127
 null, 7+8, 5+10  Norin 104
 null, 7+8, 2.2+12  Norin 15, Norin 19, Norin 20, Norin 22, Norin 23, Norin 26, Norin 28, Norin 30, Norin 43, Norin 49, Norin 50, Norin 53, Norin 54, Norin 57, Norin 63, Norin 64, Norin 65, Norin 72, Norin 95, Norin 106, Norin 117, Norin 120, Norin 122, Norin 129
 null, 7+9, 2+12  Norin 16, Norin 75, Norin 83, Norin 84, Norin 114
 null, 7+9, 2.2+12  Norin 11, Norin 69, Norin 76, Norin 98, Norin 121, Norin 125, Norin 128
 null, 20, 2+12  Norin 12, Norin 126


Publications.

  • Nakamura H. 1999. Identification of alleles for complex gene loci Glu-A1, Glu-B1, and Glu-D1, which code for high molecular weight subunits of glutenin in Japanese hexaploid wheat varieties. J Agric Food Chem 47(12):5273-5277.