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Articles 5551 - 5580 of 10755
Full-Text Articles in Botany
Arkansas Soybean Performance Tests 2002, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Soybean Performance Tests 2002, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Agricultural Experiment Station Research Series
Soybean cultivar performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies developing cultivars and/or marketing seed within the State, and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for soybean producers. The 2002 soybean cultivar performance tests were conducted at the Northeast Research and Extension Center (NEREC) at Keiser, the Cotton Branch Station (CBS) near Marianna, the Rice Research and Extension Center (RREC) near Stuttgart, the Southeast Research and Extension Center - Rohwer Division (SEREC-RD) near Rohwer, the Burton Brothers Farm (BBF) in LaFayette County, …
Arkansas Corn And Grain Sorghum Performance Tests 2002, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Corn And Grain Sorghum Performance Tests 2002, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Agricultural Experiment Station Research Series
Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers. The 2002 corn performance tests contained 59 entries and were conducted at the Northeast Research and Extension Center (NEREC) at Keiser, the Cotton Branch Station (CBS) near Marianna, the Bell Farming Company (BFC) near Des Arc, the Southeast Research and Extension Center - Rohwer Division (SEREC-RD) near Rohwer, and the John Williams Farm (JWF) in Lafayette County. …
Ampelopsis Brevipedunculata (Maxim.) Trautv., Kerry Barringer
Ampelopsis Brevipedunculata (Maxim.) Trautv., Kerry Barringer
Specimens by Name
No abstract provided.
Maclura Pomifera (Raf.) Schneid., Christopher T. Martine
Maclura Pomifera (Raf.) Schneid., Christopher T. Martine
Specimens by Name
No abstract provided.
Verbena Stricta Vent., John E. Ebinger
Verbena Stricta Vent., John E. Ebinger
Morus Alba L., John E. Ebinger
Verbena Urticifolia L., John E. Ebinger
Lysimachia Quadrifolia L., Kerry Barringer
Relationships Between Blueberry Flower Age, Pollination, And Conidial Infection By Monilinia Vaccinii-Corymbosi, Jeffery S. Lehman, Henry K. Ngugi, Harald Scherm
Relationships Between Blueberry Flower Age, Pollination, And Conidial Infection By Monilinia Vaccinii-Corymbosi, Jeffery S. Lehman, Henry K. Ngugi, Harald Scherm
Biology and Earth Science Faculty Scholarship
Monilinia vaccinii-corymbosi infects open blueberry flowers via the gynoecial pathway, leading to mummification of the developing fruit. To determine the effect of flower age on infection, stigmata were inoculated with conidia of M. vaccinii-corymbosi between 0 and 5 days after anthesis, fungal growth rates through the stylar canal were measured in detached flowers in the laboratory, and fruit disease incidence was determined in plants grown in the greenhouse. Hyphal growth rates were greatest in flowers inoculated on the day of anthesis, declined linearly with increasing flower age at inoculation (r = 0.921; P < 0.0001; n = 12), and were unaffected by the presence or absence of pollen applied at the time of inoculation. In greenhouse-grown plants, the percentage of infected fruit decreased exponentially with increasing flower age at inoculation (R = 0.878; P = 0.0057; n = 10), with disease incidence ranging from 76.4% for flowers inoculated on the day of anthesis to 15.5% for those inoculated 4 days later. Fruit disease incidence in the greenhouse was linearly correlated with hyphal growth rates in detached flowers (r = 0.985; P < 0.0001; n = 9), justifying the use of detached flowers when investigating gynoecial infection by M. vaccinii-corymbosi. In separate experiments, the effects of timing and sequence of pollination and inoculation on hyphal growth rates through the stylar canal and on disease incidence were investigated. Application of pollen to detached flowers 1 or 2 days before inoculation reduced hyphal growth rates by between 14.0 and 42.9% compared with flowers that received pollen and conidia simultaneously. Similarly, reductions in fruit disease incidence by between 9.5 and 18.3% were observed on greenhouse-grown plants for pollination-to-inoculation intervals ranging from 1 to 4 days. These results document that newly opened flowers are most susceptible to infection by M. vaccinii-corymbosi and that fruit disease incidence is reduced if pollination occurs at least 1 day before inoculation. Strategies that lead to early pollination of newly opened flowers may be useful for managing mummy berry disease in the field.
Maclura Pomifera (Raf.) Schneid., Gordon C. Tucker
Maclura Pomifera (Raf.) Schneid., Gordon C. Tucker
Specimens by Name
No abstract provided.
Vitis Riparia Michx., Gordon C. Tucker
Syringa Patula, Lynze Deline
Syringa Reticulata (Blume) H. Hara, Rachel Jones
Syringa Reticulata (Blume) H. Hara, Rachel Jones
Specimens by Name
No abstract provided.
Fraxinus Americana Var. Biltmoreana (Beadle) J. Wright Ex Fernald, Scott Seeley
Fraxinus Americana Var. Biltmoreana (Beadle) J. Wright Ex Fernald, Scott Seeley
Specimens by Name
No abstract provided.
Humulus Americanus Nutt., Holly J. Wallace
Fraxinus Lanceolata Borkh., Holly J. Wallace
Phyla Lanceolata (Michx.) Greene, Gordon C. Tucker, Nathan D. Badgett
Phyla Lanceolata (Michx.) Greene, Gordon C. Tucker, Nathan D. Badgett
Specimens by Name
No abstract provided.
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Fraxinus Pennsylvanica Marsh., John E. E. Ebinger
Specimens by Name
No abstract provided.
Pineywoods Native Plant Center, Sept 2002, Sfa Gardens, Stephen F. Austin State University
Pineywoods Native Plant Center, Sept 2002, Sfa Gardens, Stephen F. Austin State University
SFA Gardens Newsletters
No abstract provided.
Verbena Bracteata Lag. & Rodr., Tad M. Zebryk
Viola Lanceolata L. Var. Lanceolata, Tad M. Zebryk
Viola Lanceolata L. Var. Lanceolata, Tad M. Zebryk
Specimens by Name
No abstract provided.
Verbena Urticifolia L., Gordon C. Tucker
Verbena Hastata L., Tad M. Zebryk
Vitis Aestivalis F.Michx., Gordon C. Tucker
Vitis Vulpina L., Gordon C. Tucker
Cannabis Sativa L., John E. Ebinger
Morus Rubra L., John E. Ebinger
Lysimachia Lanceolata Walter, John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Parthenocissus Quinquefolia (L.) Planch., John E. Ebinger
Specimens by Name
No abstract provided.