Journal of Plant Registrations最新文献

The Inland Pacific Northwest is the largest Kentucky bluegrass (Poa pratensis L.) seed production area worldwide. Historically, farmers in Washington burnt Kentucky bluegrass residues, a common practice for pathogen control, pest management and maximum economic revenue. Washington State implements air quality and fire safety burn bans under certain conditions to protect public health and safety. Outside of Native American reservations, burning of Kentucky bluegrass has been outlawed in Washington state, which raised the need for breeding a new Kentucky bluegrass cultivar that will have good yield without burning. ‘Matchless’ (Reg. no. CV-102, PI 701401, PVP 202200523) Kentucky bluegrass is a common-type cultivar released in 2023. Matchless was selected for its superior yield without burning crop residues, derived from the common-type cultivar ‘Kenblue’, in an open-pollinated nursery in Pullman, WA. Matchless was compared to Kenblue, ‘America’, ‘Baron’, and other standard cultivars, and exhibited taller plant height, longer leaf sheath length, and longer panicle length, among other traits. Matchless outperformed Kenblue in turf quality and exhibited similar spring green-up. The combination of statistically significant differences in traits makes Matchless a unique cultivar. It is distinct from its parental cultivar Kenblue and other common-type cultivars and performs and adapts well for use in home lawns, parks, and reclamation projects.

Soft red winter wheat (Triticum aestivum L.; SRWW) is a major crop in the US southeast (SE) region. However, growing successful wheat crop is challenged by many stresses resulting in substantial losses in yield and quality. To alleviate these challenges, developing new cultivars with high yield potential with resistance to major pests in the region and good quality is warranted. This constitutes the major goal of the SRWW breeding programs ate the University of Georgia (UGA) and the regional institutions including the southern universities GRAINS (SUNGRAINS) programs. ‘GA09436-16LE12’ (Reg. no. CV-1209, PI 700011) SRWW cultivar was among the adapted wheat developed and released by the UGA College of Agricultural and Environmental Sciences in 2019. While GA09436-16LE12 is generally adapted to the US SE region, it specifically well fit to the Georgia environments. It has high yield, very good resistance to most dominant diseases including leaf (caused by Puccinia triticina Erikss.) and stripe (caused by P. striiformis Westend.) rusts; powdery mildew (caused by Erisyphe graminis); and Soil-borne wheat mosaic virus. GA09436-16LE12 has improved Fusarium head blight (caused by Fusarium graminearum Schwabe) which is reflected in lower levels of Deoxynivalenol toxin and Fusarium damaged kernels levels. It also showed moderate field resistance to Hessian fly [Mayetiola destructor (Say)] although it is susceptible to the biotypes B, C, O, and L. GA09436-16LE12 has good grain volume weight and good milling and baking quality as a SRWW.

In Utah, spring feed barley (Hordeum vulgare L.) is commonly used in rotation with hay to supply the state's animal products industry. The objective of this research was to develop a spring feed barley cultivar with improved agronomic performance and adaptation to Utah's growing conditions. ‘Rulon’ (Reg. No. CV-382, PI 705157, PVP no. 202400311) is a six-row, spring feed barley cultivar developed and evaluated as UTSB10905-72 and released in 2023 by the Utah Agricultural Experiment Station (UAES). Rulon was derived from the cross UTSB2120-36/‘Goldeneye’. Goldeneye is a six-row spring feed barley cultivar released by UAES in 2005. UTSB2120-36 was an F₄-derived experimental line from the cross ‘Century’/‘IdaGold II’. Rulon was selected through a modified bulk breeding scheme from the F₂ to the F₄ generations. Derived from the F₄ generation, Rulon was tested in replicated yield trials in Logan, UT, from 2013 to 2020, the University of Idaho (UI) Extension Variety Trials in 2016 and 2017, and the Western Regional Spring Barley Nursery from 2016 to 2018. Rulon yielded an average of 5987 kg ha⁻¹ in Logan, outperforming all check varieties, and showed similar days to heading compared to Goldeneye. In the UI Extension Variety Trials, Rulon showed higher kernel plumpness (95%) compared to the check varieties (76–88%). In the Western Regional Spring Barley Nurseries, Rulon ranked among the top five yielding entries in 15 out of 25 site-years. Rulon was released on the basis of its high grain yield, excellent kernel plumpness, and high test weight.

Four durum wheat (Triticum turgidum ssp. durum) lines Rusty-KLB (Reg. no. GP-1098, PI 705448), Rusty-14803 (Reg. no. GP-1097, PI 705447), Rusty-ST464C1 (Reg. no. GP-1099, PI 705449), and CAT-A1 (Reg. no. GP-1096, PI 705446), which carry stem rust resistance gene Sr13 alleles Sr13a, Sr13b, Sr13c, and Sr13d, respectively, are released by USDA-ARS. These alleles originated from cultivated emmer wheat (T. turgidum ssp. dicoccum) landrace Khapli (CItr 4013), T. turgidum ssp. polonicum accession CItr 14803, durum landrace ST464 (PI 191365), and durum line Camadi Abdu tipo #103 (PI 192168), respectively. Rusty-KLB, Rusty-14803, and Rusty-ST464C1 are near-isogenic lines with the pedigrees Rusty*7/KL-B, Rusty*4/3/Rusty/CItr 14803//2*Rusty, and Rusty*7/ST464-C1, respectively. KL-B, ST464-C1, and CAT-A1 are monogenic lines with the pedigrees Marruecos 9623//Khapli/Marruecos 9623, Marruecos 9623*2/ST464, and Marruecos 9623*2/Camadi Abdu tipo #103, respectively. Sr13 can be detected by perfect markers including Kompetitive allele specific polymerase chain reaction (KASP) marker KASPSr13 and semi-thermal asymmetric reverse polymerase chain reaction (STARP) markers rwgsnp37. Specific alleles can be identified via STARP markers rwgsnp38, rwgsnp39, and rwgsnp40. The Sr13 alleles provide a moderate level of resistance, typically an infection type 2, to a broad spectrum of stem rust races. Sr13c was effective against all 15 stem rust races tested while Sr13a was ineffective only against race TCMJC. Sr13b was ineffective against JRCQC, QCCJC, QFCSC, and TTRTF. Sr13d is notable in being the only Sr13 allele ineffective to TTKSK (Ug99) and TKTTF. These lines are useful for studying the host-stem rust pathogen interactions, identifying new genes, and breeding durum and bread wheat cultivars with stem rust resistance.

‘MN-Rothsay’ (Reg. No. CV-1208, PI 702731) hard red spring wheat (Triticum aestivum) was released by the University of Minnesota Agricultural Experiment Station in 2022 because of its high grain yield and lodging resistance. MN-Rothsay is a medium-late maturity cultivar with below average plant height, containing the semi-dwarfing alleles Rht-B1b and Rht24b. The lodging resistance of MN-Rothsay is similar to ‘Linkert’, a 2013 release that was the most widely grown cultivar in Minnesota from 2016 to 2020, largely due to its superior lodging resistance. MN-Rothsay has moderate resistance to Fusarium head blight (caused primarily by Fusarium graminearum Schwabe), good resistance to prevalent races of pathogens causing leaf rust (Puccinia triticina Eriks.) and stem rust (P. graminis Pers.: Pers. f. sp. tritici Eriks. & E. Henn.), and is well-adapted to the north central United States.

Plant biologists have long been fascinated with the abnormal, the monstrous, and the defective. Six sib winter wheat (Triticum aestivum L.) lines with varying types of albinism, ShunMai GAG-1 (Reg. no. GP-1090, PI 704106), ShunMai GAG-2 (Reg. no. GP-1091, PI 704107), ShunMai GAG-3 (Reg. no. GP-1092, PI 704108), ShunMai GAG-4 (Reg. no. GP-1093, PI 704109), ShunMai GAG-5 (Reg. no. GP-1094, PI 704110), and ShunMai GAG-6, (Reg. no. GP-1095, PI 704111), were derived from a cross made in 2013 with unknown pedigree, and were developed using conventional phenotypic selections. Albinism, or stage-specific albino, is their unique abnormal agronomic characteristics. All their leaves and tillers produced before winter are green, all their spring-emerging leaves and tillers are albino, and all their summer-producing leaves turn green again. Their main stems could have at least three albino leaves. In some colder springs, their after-winter emerging leaves are reddish to pinkish. They may serve as useful experimental materials for addressing a wide range of wheat breeding problems, and for wheat field art too, and may also be important materials for functional studies and eventually lead to the gene discovery. We discuss the possible interactions between plastid genes and nuclear genes and between vernalization genes responsible for the transition from vegetative to generative growth stage and photosynthetic genes.

Texas is expected to experience higher night and day temperatures and more extreme and erratic rainfall in the future. Along with the impacts of climate change, the majority of current cotton (Gossypium hirsutum L.) hectarage is expected to have less irrigation water available as the Ogallala aquafer continues to decline. Both of these realities suggest that many of Texas’ cotton producers will return to dryland production which will require reducing input cost, for example, using genetically modified cultivars. Currently, conventional cotton planting seed are about 25% lower in cost per hectare than genetically modified cultivars. Currently, most cultivars offered for sale to Texas producers are transgenic with few conventional cultivars available. The public breeding programs of Texas A&M AgriLife Research develop germplasm with improved traits for private industry and conventional cultivars with yield potential for Texas environments, both irrigated and dryland. ‘Tamcot H12’ (Reg. no. CV-148, PI 705604) was derived from a complex pedigree involving ‘DP 491’ (PI 618609), TAM 96WD-18, TAM 91C-95Ls, and ‘DP Acala 90’ (PVP 8100143). Tamcot H12 performed as well or better than most current cultivars in trials in Texas and across the US Cotton Belt. Tamcot H12 will provide producers with another conventional cotton variety.

CA 4011 (Reg. no. GP-1149, PI 705597) is a noncommercial breeding line of cotton (Gossypium hirsutum L.) jointly released by Texas A&M AgriLife Research and the Agricultural Experiment Station at the University of Georgia-Tifton. This cotton germplasm is a selection from CA 3084, a germplasm line released by Texas Agricultural Experiment Station in 1987. CA 3084 was derived from a cross of EPSM-75-AAAA-3 and EPSM-1224-1-74-2-4-2-1, historical breeding lines developed by the cotton breeding program at Texas Agricultural Experiment Station in El Paso. Progeny row of CA 4011 was selected for 2008 preliminary yield testing in Southern High Plains by the Texas A&M AgriLife Research cotton breeding program in Lubbock. In 2012, CA 4011 had less damage from thrips feeding injury than 22 other genotypes tested in a greenhouse assay but was equal to the resistant check TX110 (PI 163608). Performance testing for yield, fiber quality, and other related agronomic properties was conducted under organic management and on certified organic farms during 2012, 2013, and 2014 growing seasons. CA 4011 showed comparable yield and fiber quality to standard check cultivars grown in the Southern High Plains. Subsequent testing was done at the University of Georgia Coastal Plains Experiment Station in Tifton, GA, to evaluate for resistance to the foliar diseases areolate mildew and target spot. Disease ratings were taken in 2018 and 2019 growing seasons. CA 4011 showed favorable resistance to areolate mildew in comparison to susceptible checks, providing less leaf infection and defoliation.

Vitamin A deficiency and its associated disorders are pervasive in sub-Saharan Africa (SSA) including many middle- and low-income countries across the world. Provitamin A-enriched maize (Zea mays L.) inbred lines with desirable agronomic and adaptive traits have been developed and used to generate and commercialize maize varieties with medium to high levels of provitamin A in a few countries to curb vitamin A deficiency. Nonetheless, these inbred lines have not been made widely available to the public and private sector breeders in many countries. The main purpose for releasing the 21 provitamin A-enriched tropical maize inbred lines (PI 705424–PI 705444, Reg. nos. GP-624–GP-644) is to supply maize breeders with elite source germplasm for increasing provitamin A and other carotenoids to much higher levels to offset losses during storage, natural degradation, and processing. These inbred lines were developed at the International Institute of Tropical Agriculture (IITA) from backcrosses of high β-carotene temperate lines as donors and elite tropical lines as recipients. These inbred lines were developed through repeated self-pollination with rigorous visual selection among and within lines for plant vigor, synchronous silk emergence and pollen shedding, low ear placement, and resistance to lodging and major tropical diseases, followed by selection for bright yellow to orange kernel color with semi flint to flint kernel texture after harvest. The released maize inbred lines will be diverse sources of favorable alleles to accelerate genetic gain in provitamin A and other beneficial carotenoid enrichment for human health.

‘Black Pearl’ black bean (Phaseolus vulgaris L.) (Reg. no. CV-362, PI 705445), developed by Michigan State University AgBioResearch, was released in 2023 as an upright, full-season cultivar with anthracnose resistance and superior canning quality. Black Pearl was developed using pedigree breeding method to the F₄ generation followed by pure line selection for disease, agronomic, and quality traits. In 5 years of field trials, Black Pearl yielded 3372 kg ha⁻¹, flowered in 47 days, and matured in 98 days on average. Plants averaged 46 cm in height, with lodging resistance score of 1.8 and seed weight of 21.9 g 100 seed⁻¹. Black Pearl combines high yield potential with upright architecture and full-season maturity in a black seed type. Black Pearl has resistance to lodging and high pod placement within the plant making it suitable for direct harvest under narrow row production systems. Black Pearl is resistant to races 7 and 73 of anthracnose, resistant to Bean common mosaic virus, and has shown better resistance to Rhizoctonia root rot than other black bean cultivars. Black Pearl produces seed that meets industry standards for export and packaging and was rated the highest in canned bean color in the black bean market class.