Registration of Varieties and Strains of Wheatgrass, II (Agropyron Spp.)<sup>1</sup>

Hein, M. A.

doi:10.2134/agronj1955.00021962004700110021x

Cited by 14 publications

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“…Subplot treatments consisted of Reliant intermediate wheatgrass, Manska intermediate wheatgrass, Lincoln smooth bromegrass (Hein, 1955a), Nordan crested wheatgrass (Hein, 1955b), Lodorm green needlegrass (Schaaf and Rogler, 1970), and Dacotah switchgrass (Barker et al, 1990). Lodorm and Dacotah did not produce adequate stands in grass–alfalfa mixtures (Table 1), and DM yields were not measured on subplots of these two grass entries.…”

Section: Methodsmentioning

confidence: 99%

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

2001

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alfalfa mixtures are needed for DM yields over several years in response to N fertilization in the Northern Cultivars used in grass-alfalfa (Medicago sativa L.) mixtures for Great Plains. hay production in the semiarid Northern Great Plains have often lacked long-term productivity. This study was conducted to compare Alfalfa germplasm with a high proportion of its pardry matter (DM) yields of grass monocultures and grass-alfalfa binary entage from yellow flowering alfalfa [M. sativa subsp. mixtures receiving annual applications of 0 and 50 kg N ha Ϫ1 over a falcata (L.) Arcang] and with the capacity to spread 5-yr period. 'Reliant' and 'Manska' intermediate wheatgrass [Thinofrom new shoots arising from horizontal roots has dempyrum intermedium (Host) Barkw. and Dewey], 'Lincoln' smooth onstrated long-term persistence in the semiarid Northbromegrass (Bromus inermis Leyss.), 'Nordan' crested wheatgrass ern Great Plains (Heinrichs, 1975;Berdahl et al., 1989). [Agropyron desertorum (Fisch.) Schult.], 'Lodorm' green needlegrass Other legumes, including cicer milkvetch (Astragalus (Stipa viridula Trin.), and 'Dacotah' switchgrass (Panicum virgatum cicer L.) (White and Wight, 1984) and sainfoin (Ono-L.) were seeded in monoculture and in binary mixtures with 'Rangebrychis viciaefolia Scop.) (Dubbs, 1971), had inferior lander' alfalfa [Medicago sativa subsp. ϫ varia (Martyn) Arcang.] persistence to hardy alfalfa germplasm at semiarid sites. on a Parshall fine sandy loam (coarse-loamy, mixed, superactive, frigid, Pachic Haplustolls) near Mandan, ND. Plant stands of green Results from earlier studies (Kilcher and Heinrichs, needlegrass and switchgrass were inadequate, and yields were not 1966; Kilcher et al., 1966) indicated that intermediate measured. Total seasonal DM yields from two cuttings averaged 8.74 wheatgrass had poor persistence in mixtures with alfalfa and 2.71 Mg ha Ϫ1 , respectively, for grass-alfalfa mixtures and grass relative to standard and fairway crested wheatgrass monocultures at 0 kg N ha Ϫ1 . At 50 kg N ha Ϫ1 , grass-alfalfa mixtures [Agropyron cristatum (L.) Gaertner] and smooth bromeand grass monocultures averaged 8.72 and 5.04 Mg ha Ϫ1 DM yield, grass. The intermediate wheatgrass used in these tests respectively. Yields of the grass component of first cut grass-alfalfa originated from common seed that had no cultivar desigmixtures averaged 35% of total yield for intermediate wheatgrass, Abbreviation: DM, dry matter. Published in Agron. J. 93:463-467 (2001).

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Section: Methodsmentioning

confidence: 99%

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

2001

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“…Accession 98568 contributed to the development of cultivars (cv.) ‘Ree’, ‘Chief’ (Alderson and Sharp ), ‘Greenar’ (Hein ), ‘Oahe’ (Ross ) and ‘Slate’ (Newell ). The release of intermediate wheatgrass cv.…”

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Agronomic and genetic diversity in intermediate wheatgrass (Thinopyrum intermedium)

et al. 2016

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Intermediate wheatgrass [Thinopyrum intermedium (Host) Barkworth & D. R. Dewey] plant introductions (PI) have played a critical role in the development of improved intermediate wheatgrass cultivars. The objective of this study was to characterize a large number of intermediate wheatgrass populations over its native range for dry matter yield (DMY), crude protein (CP), in vitro true digestibility (IVTD), neutral detergent fibre (NDF), and rhizome development and genetic diversity and structure to identify superior populations and possible geographical regions in which to collect. Analysis of molecular variance using 643 AFLP bands partitioned 31% of the total genetic variation among these populations with 69% variance detected within populations. Bayesian cluster analysis identified two large groups designated as Asian and European under K = 2. In general, European accessions had greater DMY than did Asian accessions. Observed trends were towards greater CP values in populations with Asian ancestry. Selection index values above zero were observed in populations with European ancestry, and the exception was the late‐maturing (208 days to bloom) populations with Asian ancestry. Plant populations 383 551, 383 561, 401 161, 401 173, 440 021, 578 692 (cv. Tegmar) and 598 740 had rhizome scores greater than 7.0. Despite significant differences detected between populations (ΦST = 0.3136; P < 0.001), there was strong indication of admixed co‐ancestry or possible gene flow between K = 2–9 models.

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“…However, most forage grasses used in this region have been developed and released based on characteristics related to their establishment and production rather than their nutritive quality. Wellestablished cultivars such as Nordan (Hein, 1955a) CWG, Lincoln (Hein, 1955b) SBG, and Oahe (Ross, 1963) and Greenleaf (Wilson and Smoliak, 1978) IWG were released partially because of good seedling vigor and ease of seedling establishment. Oahe IWG, Lincoln SBG, and 'Hycrest' (Asay, 1985) CWG, a hybrid of [Agropyron cristatum (L.) Gaertn.]…”

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Nutritive Quality of Four Perennial Grasses as Affected by Species, Cultivar, Maturity, and Plant Tissue

2006

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Improved perennial grasses provide ranchers with high-quality forage for grazing and hay. However, in the Northern Great Plains of the USA, nutritive quality information is limited on both established and new cultivars. This study compares the nutritive quality of established and more recently released cultivars of crested wheatgrass [Agropyron desertorum (Fisch. ex Link) Schultes] (CWG), intermediate wheatgrass [Thinopyrum intermedium (Host) Barkworth and Dewey] (IWG), western wheatgrass [Pascopyrum smithii (Rydb.) Love] (WWG), and smooth bromegrass (Bromus inermis Leyss.) (SBG); evaluates the effect of plant maturity on tissue quality; compares nutritive quality differences among species; and evaluates nutritive quality relationships. Smooth bromegrass leaf tissue had the highest (P , 0.05) in vitro dry matter digestibility (IVDMD) and lowest neutral detergent fiber (NDF), but IWG and WWG had higher stem IVDMD. Few quality differences were detected between cultivars within a species, but 'Rosana' WWG had higher (P , 0.10) stem and whole plant IVDMD than the more recently released 'Rodan'. Leaf percentage differed significantly (P , 0.05) among species, with WWG (49.8%) having the highest, and CWG (21.2%) the lowest. Correlation coefficients between quality measurements suggest that if grass leaf tissue were selected for higher IVDMD, leaves should also have higher crude protein (CP) and lower NDF. This relationship was best illustrated with WWG for all three tissue types. The apparent lower quality of Rodan WWG compared with the older cultivar, Rosana, should caution plant breeders to monitor forage quality to ensure that selection for improved agronomic traits does not compromise nutritive quality.

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Registration of Varieties and Strains of Wheatgrass, II (Agropyron Spp.)¹

Cited by 14 publications

References 0 publications

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

Agronomic and genetic diversity in intermediate wheatgrass (Thinopyrum intermedium)

Nutritive Quality of Four Perennial Grasses as Affected by Species, Cultivar, Maturity, and Plant Tissue

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Registration of Varieties and Strains of Wheatgrass, II (Agropyron Spp.)1

Cited by 14 publications

References 0 publications

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

Dry Matter Yields of Cool‐Season Grass Monocultures and Grass–Alfalfa Binary Mixtures

Agronomic and genetic diversity in intermediate wheatgrass (Thinopyrum intermedium)

Nutritive Quality of Four Perennial Grasses as Affected by Species, Cultivar, Maturity, and Plant Tissue

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Registration of Varieties and Strains of Wheatgrass, II (Agropyron Spp.)¹