Registration of 'Advent' Perennial Ryegrass 'Advent' perennial ryegrass (Lolium perenne L.) (Reg. no. CV-183, P1 554609) was developed through cooperative work of Jacklin Seed Co., Post Falls, ID, and the New Jersey Agricultural Experiment Station. Advent was tested under the test code PJC. It was released by Jacklin Seed Co. on 12 July 1990, with the first certified seed produced in July 1990. Advent has a broad genetic base derived from the maternal progenies of 85 clones. Twenty-four additional clones were included as pollen sources. Elite plants were selected from old turfs in Maryland, New York, New Jersey, and Pennsylvania between 1962 and 1977 (3). The best performing of these were allowed to interpollinate in isolation or were top-crossed with the most promising plants from current cycles of various population improvement programs at the New Jersey Agricultural Experiment Station. Additional cycles of population improvement on the progenies for turf performance, disease resistance, stress tolerance, and seed yield were performed using recurrent restricted phenotypic selection in spaced-plant nurseries, combined with a modified backcrossing program and single-plant progeny trials conducted in closely mowed turf plots. In February 1987, 5400 clonal ramets were selected from turf trials of nine germplasm composites, and transferred to a greenhouse where an environment conducive to floral induction was maintained until they were transplanted in a spaced-plant nursery near Adelphia, NJ, in late March. Attractive, lower-growing plants with dark green color and high seed yield potential were identified. During periods of heat and drought stress in early August, superior clones were identified and divided into propagules, which were used to establish a replicated, randomized isolated nursery in September. Prior to anthesis in 1988, clones with poor winter color or with inferior disease resistance in turf trials were removed. Breeder seed was harvested from 85 clones with good floret fertility and the presence of an endophytic fungus (Acremonium lolii Latch, Christensen & Samuels) in late June 1988. Pollen parents included these 85 selected clones plus an additional 24 clones from the same isolated crossing block. A foundation increase field was established in western Oregon in the fall of 1988. Advent is an attractive, lower-growing, dark green cultivar with medium-fine texture and medium-high density. Heading date of Advent is 2 d later than 'Pinnacle' (6). Advent exhibited good turf quality in the national perennial ryegrass test (National Turfgrass Evaluation Program, NTEP) established in 1990 (9). In these trials, Advent had good spring density, fall percent living ground cover, and winter color retention. Advent had good drought tolerance, being slow to wilt and go into dormancy, with good recovery after dormancy. Advent has moderate to good resistance to many diseases, including leaf spot (caused by Drechslera spp.), dollarspot (caused by Lanzia and Moellerodiscus spp.), pythium blight (caused by Pythium sp...
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Delsoy 4210. Seeds of Bronson averaged 416 g kg"' protein and 204 g kg" 1 oil, compared with seeds of Delsoy 4210 that averaged 415 g kg" 1 protein and 212 g kg" 1 oil on a moisturefree basis. Seed weight of Bronson averaged 16.7 g 100 seed" 1 , compared with 17.7 g 100 seed" 1 for Delsoy 4210. Bronson was evaluated in Uniform Test IV of the Northern Regional Cyst Nematode Tests in 1991 and 1992 (3). In these tests, Bronson averaged 2% higher in seed yield on SCN-noninfested sites and 2% lower in seed yield on SCN-infested sites than Delsoy 4210. Bronson is an indeterminate Maturity Group IV cultivar that has white flowers, tawny pubescence, and, when mature, tan pods containing yellow seeds with a shiny luster, black hila, and high peroxidase activity in the seed coat. Bronson is classified as susceptible to Race 1, moderately susceptible to Race 2, moderately resistant to Race 3, resistant to Race 4, moderately susceptible to Race 5, and moderately resistant to Race 14 of SCN based on the differential system of Schmitt and Shannon (4). Seedlings of Bronson are resistant to Race 1 of Phytophthora sojae M.J. Kaufmann & J.W. Gerdemann when inoculated in the hypocotyl with this pathogen. Breeder seed of Bronson was distributed to the releasing states Illinois and Indiana for foundation seed production in 1993. U.S. plant variety protection is pending for Bronson soybean. A small sample of seed of Bronson for research purposes may be obtained from the authors for at least 5 yr.
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