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| Publication Type:
| Refereed |
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| Author(s): | Coffey, B. N.;
Baltensperger, A. A. |
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| Author Affiliation: | Agronomy & Horticulture Dept., New Mexico State University, Las Cruces, NM |
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| Title: | Heritability estimates for selected turfgrass characteristics of Bermudagrass Evaluated Under Shade |
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| Volume Editors: | Takatoh, Hiroshi |
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| Meeting Info.: | Tokyo, Japan: July 31-August 5, 1989 |
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| Source: | Proceedings of the Sixth International Turfgrass Research Conference. 1989, p. 117-119. |
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| Publishing Information: | Tokyo, Japan: Japanese Society of Turfgrass Science and the International Turfgrass Society |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Cynodon dactylon; Shade resistance; Color; Clones; Selection; Breeding
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| Abstract/Contents: | "No genetic estimates for chlorophyll content, visual color, general appearance, plot density, or clipping weight of bermudagrass, Cynodon dactylon (L.) Pers., evaluated under shade exists in the literature. The objectives of this investigation were to evaluate genetic variation among randomly selected parent clones and their polycross progenies, and to estimate heritabilities for five specific turfgrass characteristics evaluated under shade in a field experiment at Las Cruces, New Mexico, in 1985 and 1986. Parental clones exhibited differences for chlorophyll concentration, visual color and density, clipping weight, and general appearance. The polycross progenies differed for chlorophyll concentration, visual color, and general appearance. Broad-sense heritabilities were 0.90 or greater for all five characteristics. Narrow-sense heritability estimates ranged form a low of 0.01 to a maximum of 0.71. Moderate-to-high narrow-sense heritabilities were calculated for visual color and chlorophyll content. The presence of non-additive gene action and/or other conpounding effects was detected for several characteristics. Chlorophyll content was highly correlated with visual color and general appearance, indicating that indirect selection for chlorophyll content may be performed by selection for visual color or general appearance in the field. Large genetic variances were detected for chlorophyll concentration and visual color. These values, together with the moderate-to-high narrow-sense heritabilities calculated for these two characteristics, indicate that either phenotypic recurrent selection or mass selection techniques would be adequate for efficient genetic gains to be realized. More intensive programs utilizing progeny testing would be required for plot density and clipping weight alterations since non-additive gene action is primarily conditioning these two characteristics." |
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| Language: | English |
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| References: | 14 |
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| See Also: | Other items relating to: SHADEW |
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| Note: | Tables
"Chapter 7" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Coffey, B. N., and A. A. Baltensperger. 1989. Heritability estimates for selected turfgrass characteristics of Bermudagrass Evaluated Under Shade. Int. Turfgrass Soc. Res. J. p. 117-119. |
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