Preliminary trials of genotype-by-environment interactions for sugars, organic acids, and amino acids of table grape [Vitis] varieties in Japan
1997
Shiraishi, M. (Kyushu Univ., Fukuoka (Japan). Faculty of Agriculture) | Shiraishi, S.
For the period of two successive years, biochemical quality traits of four table grape varieties were evaluated at the eight locations in southwestern part of Japan, especially in Kyushu district. Of quality traits considered, Brix, reducing sugar content,alpha ratio, free acid content, beta radio, amino acid content, and gamma ratio were determined on all grape berries tested. By two techniques (I: coefficient of variability , CV and II: analyses of variance), genotype-by-environment interaction was large in sugar content, free acid content, acid composition (beta ratio), and amino acids. There was no significant difference in the alpha ratio for location's and year's effects. Furthermore, excepting amino acid content, there were significant varietal differences in the traits examined, indicating that the genotypic effect is not negligible
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