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| Publication Type:
| Report |
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| Author(s): | Yahagi, Hisashi;
Hiroi, Kiyosada;
Akiyama, Fumiaki;
Sugita, Shin-ichi |
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| Author Affiliation: | Yahagi, Hiroi, & Sugita: Pasture Plant Breeding Laboratory, Department of Plant Breeding; Akiyama: Biotechnology Laboratory, Department of Plant Breeding |
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| Title: | Studies of breeding method for dry matter digestibility in tall fesue (Festuca arundinacea Schreb.): The genetic variation and heritablity of dry matter digestibility |
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| Source: | Bulletin of the National Grassland Research Institute. Vol. 60, March 2001, p. 19-24. |
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| Publishing Information: | Nishinasuno, Tochigi, Japan |
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| # of Pages: | 6 |
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| Abstract/Contents: | The object of this study is to estimate genetic variation and heritability in tall fescue for breeding high digestibility varieties. Forty-two individuals selected by tolerance to summer injury were polycrossed in 1996, parental clones and their progenies were planted into a randomized block design field with three replicates. Herbage samples were taken at in July and October in 1998 and in vitro dry matter digestibility were estimated by enzyme soluble digesitivility (ESDMD ; 0.2% cellulase and 0.01% amylase mixture in 0.1M acetate buffer (pH 5.8) for 17.5 hours. Among parental clones and progenies, there were large and significant difference (at 1% level) in ESDMD of 15%. Midium, not high correlation between seasons for ESDMD, suggested a presence of some season X genotype interactions. Narrow sense heritabilities were 0.521 for summer, 0.454 for autumn and 0.637 for mean of two seasons, respectively. Those data indicate that improvement of ESDMD in tall fescue would be possible. Mean value of ESDMD of summer and autumn seasons could be used for the criterion of selection. From the broad sense of heritabilities obtained from variance analysis, more than 3 replications were considered to be required for evaluation of ESDMD in progenies. Since relationships between ESDMD and other observed characteristics were low, selection for ESDMD by other plant characteristics might be difficult." |
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| Language: | Japanese |
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| References: | 15 |
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| Note: | Tables and abstract appear in English |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yahagi, H., K. Hiroi, F. Akiyama, and S.-I. Sugita. 2001. Studies of breeding method for dry matter digestibility in tall fesue (Festuca arundinacea Schreb.): The genetic variation and heritablity of dry matter digestibility. (In Japanese) Bull. Natl. Grassl. Res. Inst. 60:p. 19-24. |
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