Details for: PI 639689, Psathyrostachys juncea (Fisch.) Nevski, 'Bozoisky-II'


Summary Data
Taxonomy:
Psathyrostachys juncea (Fisch.) Nevski
Cultivar:
'Bozoisky-II'
Origin:
Developed – Utah, United States
Received by NPGS:
10 Jun 2005
Improvement Status:
Cultivar
Reproductive Uniformity:

Population
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Availability
This accession is not available. Contact site for status.
 
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Core Passport Data
Taxonomy:
Psathyrostachys juncea (Fisch.) Nevski
Cultivar:
'Bozoisky-II'
Origin:
Developed – Utah, United States
Received by NPGS:
10 Jun 2005
Improvement Status:
Cultivar
Reproductive Uniformity:

Population
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Source History
Accession Names and Identifiers
'Bozoisky-II'
Type: Cultivar name

Narrative
Selected for seedling vigor (emergence from a deep planting depth), seed mass, seed yield, vegetative vigor, total dry matter production, and response to drought. Has a much broader genetic base than other Russian wildrye cultivars and has been evaluated extensively on rangeland sites in western United States. Seedling establishment has been equal to or greater than commercially available cultivars. When combined across two locations, itI is significantly taller (92.9 cm) than Mankota (84.3 cm) and Tetracan (85.2 cm). At both locations, it has a significantly longer inflorescence than Bozoisky-Select (10.8 for the former versus 9.0 cm for the latter) and Mankota (8.5 cm). It is a diploid (2n=2x=14) and has the same ploidy level as the commercially available cultivars Bozoisky-Select, Mankota, Swift, and Vinall. Selection emphasis was for increased seedling vigor during establishment. In seeded trials, when planted on a pure live seed basis (PLS), it had significantly more seedlings per unit area (m2) than did Bozoisky-Select and Tetracan. A neighbor-joining tree demonstrated that Bozoisky-II contains substantially more genetic diversity than current diploid and tetraploid cultivars. The average similarity coefficient (0.5823) among genotypes of this line was significantly less (P<0.05) than Cabree, Tetracan, and Tetra-1 and numerically less than the other five cultivars that were evaluated. Analysis of molecular variance indicated that it contains substantially more DNA polymorphisms than the other eight cultivars that were evaluated.
Psathyrostachys juncea (Fisch.) Nevski
Genus:
Psathyrostachys
Family:
Poaceae (alt. Gramineae)
Subfamily:
Pooideae
Tribe:
Triticeae
Nomen number:

70517
Place of publication:

V. L. Komarov, Fl. URSS 2:714. 1934
Verified:
11/16/2007 by ARS Systematic Botanists.
Other conspecific taxa
Psathyrostachys juncea (Fisch.) Nevski subsp. hyalantha (Rupr.) Tzvelev (4 active accession[s])
Psathyrostachys juncea (Fisch.) Nevski subsp. juncea (0 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Heterotypic Synonym(s)
Elymus desertorum Kar. & Kir.

Common names
LanguageNameAlternate namenoteseqCitation
EnglishRussian-wild rye  1Wei, J.-Z. et al. 1997. Genetic variability in Russian wildrye (Psathyrostachys juncea) assessed by RAPD. Genet. Resources Crop Evol. 44:117-125.
Swedishstäppråg  2Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinesexin mai cao  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
Transliterated Russianlomkokolosnik sitnikovyj  2Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
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Citations
Pedigree
Description:
The 15 parent clones were derived from two base population synthetics A (9 clones) and B (6 clones).Synthetic-A was comprised of 18 plants from: Vinall, P210, PI 314675, Bozoisky, PI 406471, Shortandinsky, PI 314082, and Jones & Keller #447. Synthetic-B was comprised of 12 plants from Vinall, P210, PI 272136, PI 314675, PI 369234, Bozoisky, PI 406469, and PI 314082. A total of three cycles of recurrent phenotypic selection for plant vigor, increased seed weight and the ability of seedlings to emerge from a deep planting depth was completed within each synthetic population.
Intellectual Property Rights
Crop Science Registration. CV-244, OTHER GRASSES. Issued: 01 Mar 2006.
  • Jensen, K., K. H. Asay, D. A. Johnson, S. R. Larson, B. L. Waldron, & A. J. Palazzo. 2006. BOZOISKY-II Russian Wildrye. Crop Sci. (Madison) 46(2):986.

U.S. Plant Variety Protection
PVP 200600226
Variety: Bozoisky-II
Taxonomy: Psathyrostachys juncea (Fisch.) Nevski
Experimental name/synonym: Syn-A
Crop: WILDRYE
Applicant: The United States Government as represented by the Secretary of Agriculture
Date filed: 05/24/2006
Date issued: 02/15/2011
Status: Certificate Issued
Status date: 02/15/2011