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| Author(s): | Matsumura, Masayuki;
Nakajima, Nizo |
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| Author Affiliation: | Faculty of Agriculture, Gifu University, Gifu, Japan |
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| Title: | Intraspecific variations in some characters related to seed propagation of the Japanese lawngrass Zoysia japonica. (2). Seed germinability of preserved clonal lines derived from different localities |
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| Source: | Journal of Japanese Society of Grassland Science. Vol. 30, No. 3, 1984, p. 216-223. |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Zoysia japonica; Seed production; Germination; Germinability
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| Abstract/Contents: | "The extensive utilization of the Japanese lawn grass has been restricted mainly by two factors, viz., unavailability of commercial seeds and extremely poor germinability of seeds. As concerns the former subject, the authors reported previously in the first paper of this series, and so the present paper is concerned with the latter one. Germinability of seeds derived from different clonal lines identical with those of the previously reported was compared as a fundamental study of selecting easily germinable lines. About 30 local clones, which ahd been grown under uniform garden conditions, provided seed materials for Experiment 1 (1978s seeds). In both experiments, germination responses were tested using fertile seeds without any treatment (control) and those with various pretreaments for germination acceleration. Two to four replications of 100 seeds each were used in every test. Throughout the two series of experiments, non-treated seeds showed poor germination on an average with a wide range of line to line variation. From the analysis of variance, significant differences between lines were recognized. Germination responses to the given treatment and condition also differed greatly between lines. All germination data were transformed into relative values and averaged over four treatments. Thus, the Relative Germination Degree (RGD) of each line was tentively given as a general index for the evaluation of germinability. Correlation coefficient of germinability based on the RGD showed r=+0.77 (significant at 1% level) between two series of experiments. This suggests that most of the preserved lines used are able to produce nearly consistently the seeds possessing line-specific-germinability under variable conditions. Using a mean RGD as a basic criterion, 31 preserved lines were classified into four types (A to D) corresponding to their difficulty of germination. From the standpoint of breeding seed-propagation line, the clonal lines belong to Type D, and some of Type C appear to be of use for its materials." |
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| Language: | Japanese |
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| References: | 9 |
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| Note: | Summary appears in English
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Matsumura, M., and N. Nakajima. 1984. Intraspecific variations in some characters related to seed propagation of the Japanese lawngrass Zoysia japonica. (2). Seed germinability of preserved clonal lines derived from different localities. (In Japanese) Journal of Japanese Society of Grassland Science. 30(3):p. 216-223. |
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