Construction and use of a database from malting barley [Hordeum vulgare] crossing records
1994
Mizuta, K. (Fukuoka-ken. Agricultural Research Center, Chikushino (Japan)) | Yoshida, T.
A database of malting barley crossing records was developed using Prolog-KABA interpreter for a personal computer. Breeding lines change their names in breeding progress. Data of old name were also included in the database. By simple programming in Prolog, it was possible to draw pedigree trees, to count the number of ancestors and to compute the relationships among cultivars. Fifty one lines were developed from 1974 to 1992 for regional adaptability test by Fukuoka Agricultural Research Center. All crossing records included in these lines were assembled and the perfect pedigree trees were drawn for them. "Golden melon" was one of the malting barley cultivars introduced and cultivated extensively in the late 19th century of Japan. Early cultivars were developed from the crossings between Golden melon and some indigenous lines or between pure line selections of Golden melon. Later, crossings of malting barley in Japan were, essentially, among lines developed in the previous cycles, though a few genes were introduced for specific breeding objectives as BaYMV resistance, powdery mildew resistance or high diastatic power. The database showed that 1) lines developed recently were about j10th generation's from Golden melon, 2) the number of original cultivars contributing them was only 10-14, 3) the coefficients of relationship between Golden melon and them are large and the values are about 40%, and 4) the gene pool of malting barley in Japan was extremely narrow
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