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| Web URL(s): | http://archive.lib.msu.edu/tic/ressum/1991/trs/12.pdf
Last checked: 01/20/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | White, Donald B. |
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| Author Affiliation: | University of Minnesota |
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| Title: | Improvement of Poa Annua var reptans for golf turf |
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| Source: | 1991 Turfgrass Research Summary [USGA/GCSAA]. 1991, p. 12. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Golf House. |
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| # of Pages: | 1 |
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| Full Report URL: | http://turf.lib.msu.edu/rprl/243.pdf
Last checked: 9/2001
Requires: Adobe Acrobat
Notes: This is the entire full report! |
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| Keywords: | TIC Keywords: Breeding improvement; Cultivar improvement; Evaluations; Poa annua var. reptans; Poa supina
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| Abstract/Contents: | "The project is on schedule for evaluation, seed production and introduction of five of the original eight superior lines of Poa annua var. reptans and P. supina. The seed production field established in 1990 at Pickseed West in Tangent, Oregon was harvested in July of 1991. Seed from these lines was allocated for a breeder's seed planting in Oregon and seeded golf course management plantings were established in Minnesota. The breeder's seed planting was seeded on October 12 and seed from this planting will be harvested and used in 1992 to increase the breeder's seed supply and allow for more widespread evaluation of the selections. One hundred fifty selections were collected from 23 locations were added to the program in 1991; however, emphasis is being placed on Poa annua var reptans #42, #117, #184, #208, and #234 for further evaluation, naming and introduction. Selections #117 and #208 received the highest laboratory cold tolerance ratings while all five performed well over the winter in the field trials. Several new selections and F1 hybrids continue to exhibit characteristics that would qualify them for the next breeding cycle. Two selections exhibit truly exceptional color, density, and persistance [persistence]. The excised stem-mist emasculation (ES-ME) technique has been fully employed in the crossing program and has enabled completion of many difficult crosses this year. Seedling plants show more spreading vigor than vegetatively established plants. When progeny from the same parents were evaluated, stolons spread, on average, one third more on first-year plants compared to those on vegetatively re-established second-year plants. Fifty different crosses were performed to develop F1 hybrids and over 2,000 offspring were evaluated. Several of these hybrids have superior characteristics and are uniform among plants. Several F2 hybrids also show promise with improved vigor, density, color, texture, and uniformity. Selection #184 and #117 are superior parents for use in the production of desirable F1 hybrids. Surprisingly, interspecific crosses between P. annua (2n=28) and P. supina (2n=14) resulted in fertile and promising progeny. However, four of our plants, all of which are dense, dwarf, dark green, desirable plant types have only 14 chromosomes (1/2 the expected number). This could open the door to much easier inheritance research with P. annua and P. supina. Three distinct flowering types, day neutral, cold + short day (spring), and short day were identified. Some crosses segregated to a 3:1 ratio of seasonal to day neutral habit which may indicate a simple single gene, two allele system of inheritance for spring flowering types. This information will be extremely valuable for future breeding efforts. Other research indicates that fourteen-year-old P. annua seed had 50% germination, demonstrating the potential value (or problems) of the current Poa seed bank in the soil." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related manuscript, Improvement of Poa annua for Golf Turf: [1991 Annual Research Report], 1991, R=233847. R=233847 |
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| See Also: | Other Reports from this USGA research project: 1984-03-012 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
White, D. B. 1991. Improvement of Poa Annua var reptans for golf turf. Turfgrass Environ Res. Summ. p. 12. |
| Fastlink to access this record outside TGIF: https://tic.lib.msu.edu/tgif/flink?recno=29739 |
| If there are problems with this record, send us feedback about record 29739. |
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| Web URL(s):
http://turf.lib.msu.edu/rprl/243.pdf
Last checked: 9/2001
Requires: Adobe Acrobat
Notes: This is the entire full report! |
| 
MSU catalog number: SB 433 .A1 A6 |
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