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Tracy M Sterling - One of the best experts on this subject based on the ideXlab platform.
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Inheritance of Resistance to Clopyralid and Picloram in Yellow Starthistle (Centaurea solstitialis L.) Is Controlled by a Single Nuclear Recessive Gene
2015Co-Authors: Robert P Sabba, Norman K Lownds, I. M. Ray, Tracy M SterlingAbstract:The noxious weed yellow starthistle (Centaurea solstitialis L.) can be controlled effectively at the seedling stage with foliar application of the auxinic herbicides picloram or clopyralid. Although resistance to these herbicides is rare, a yellow starthistle biotype resistant to picloram and cross-resistant to clopyralid was observed in 1989 near Dayton, WA, in a pasture that had been subjected to intensive picloram selective pressure. Our objective was to determine the mode of inheritance for this resistance trait. Transmission of the resistant phenotype was monitored in reciprocal F1 crosses between susceptible (SCI) and resistant (RDW) plants, their testcross and pseudo-F2 progeny. Progeny from all crosses, as well as RDW and SCI seedlings of original populations, were sprayed with picloram or clopyralid to distinguish between susceptible and resistant individuals. All F1 progeny wer
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inheritance of resistance to clopyralid and picloram in yellow starthistle centaurea solstitialis l is controlled by a single nuclear Recessive Gene
Journal of Heredity, 2003Co-Authors: Robert P Sabba, Norman K Lownds, Tracy M SterlingAbstract:The noxious weed yellow starthistle (Centaurea solstitialis L.) can be controlled effectively at the seedling stage with foliar application of the auxinic herbicides picloram or clopyralid. Although resistance to these herbicides is rare, a yellow starthistle biotype resistant to picloram and cross-resistant to clopyralid was observed in 1989 near Dayton, WA, in a pasture that had been subjected to intensive picloram selective pressure. Our objective was to determine the mode of inheritance for this resistance trait. Transmission of the resistant phenotype was monitored in reciprocal F1 crosses between susceptible (SCI) and resistant (RDW) plants, their testcross and pseudo-F2 progeny. Progeny from all crosses, as well as RDW and SCI seedlings of original populations, were sprayed with picloram or clopyralid to distinguish between susceptible and resistant individuals. All F1 progeny were susceptible to both herbicides, indicating that the resistance trait was of nuclear origin and Recessive in nature. Segregation of the resistant phenotype among pseudo-F2 and testcross progeny of F1 genotypes demonstrated monofactorial inheritance (P ..25)for resistance to both herbicides. The conclusion that resistanceis conferred by a single Recessive allele is consistent with the observation that no other picloramresistant yellow starthistle populations have been identified in the area since picloram selection pressure was abated. Yellow starthistle (Centaurea solstitialis L.) is a highly competitive diploid winter annual of Eurasian origin that is advancing steadily on western rangelands of the United States. This noxious weed can be controlled effectively at the seedling stage by foliar application of the pyridinecarboxylic acid herbicides picloram or clopyralid. These compounds are
Rebecca Grumet - One of the best experts on this subject based on the ideXlab platform.
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inheritance of resistance to watermelon mosaic virus in the cucumber line tmg 1 tissue specific expression and relationship to zucchini yellow mosaic virus resistance
Theoretical and Applied Genetics, 1995Co-Authors: T Wai, Rebecca GrumetAbstract:The inbred cucumber (Cucumis sativus L.) line TMG-1 is resistant to three potyviruses:zucchini yellow mosaic virus (ZYMV), watermelon mosaic virus (WMV), and the watermelon strain of papaya ringspot virus (PRSV-W). The Genetics of resistance to WMV and the relationship of WMV resistance to ZYMV resistance were examined. TMG-1 was crossed with WI-2757, a susceptible inbred line. F1, F2 and backcross progeny populations were screened for resistance to WMV and/or ZYMV. Two independently assorting factors conferred resistance to WMV. One resistance was conferred by a single Recessive Gene from TMG-1 (wmv-2). The second resistance was conferred by an epistatic interaction between a second Recessive Gene from TMG-1 (wmv-3) and either a dominant Gene from WI-2757 (Wmv-4) or a third Recessive Gene from TMG-1 (wmv-4) located 20–30 cM from wmv-3. The two resistances exhibited tissue-specific expression. Resistance conferred by wmv-2 was expressed in the cotyledons and throughout the plant. Resistance conferred by wmv-3 + Wmv-4 (or wmv-4) was expressed only in true leaves. The Gene conferring resistance to ZYMV appeared to be the same as, or tightly linked to one of the WMV resistance Genes, wmv-3.
Robert P Sabba - One of the best experts on this subject based on the ideXlab platform.
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Inheritance of Resistance to Clopyralid and Picloram in Yellow Starthistle (Centaurea solstitialis L.) Is Controlled by a Single Nuclear Recessive Gene
2015Co-Authors: Robert P Sabba, Norman K Lownds, I. M. Ray, Tracy M SterlingAbstract:The noxious weed yellow starthistle (Centaurea solstitialis L.) can be controlled effectively at the seedling stage with foliar application of the auxinic herbicides picloram or clopyralid. Although resistance to these herbicides is rare, a yellow starthistle biotype resistant to picloram and cross-resistant to clopyralid was observed in 1989 near Dayton, WA, in a pasture that had been subjected to intensive picloram selective pressure. Our objective was to determine the mode of inheritance for this resistance trait. Transmission of the resistant phenotype was monitored in reciprocal F1 crosses between susceptible (SCI) and resistant (RDW) plants, their testcross and pseudo-F2 progeny. Progeny from all crosses, as well as RDW and SCI seedlings of original populations, were sprayed with picloram or clopyralid to distinguish between susceptible and resistant individuals. All F1 progeny wer
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inheritance of resistance to clopyralid and picloram in yellow starthistle centaurea solstitialis l is controlled by a single nuclear Recessive Gene
Journal of Heredity, 2003Co-Authors: Robert P Sabba, Norman K Lownds, Tracy M SterlingAbstract:The noxious weed yellow starthistle (Centaurea solstitialis L.) can be controlled effectively at the seedling stage with foliar application of the auxinic herbicides picloram or clopyralid. Although resistance to these herbicides is rare, a yellow starthistle biotype resistant to picloram and cross-resistant to clopyralid was observed in 1989 near Dayton, WA, in a pasture that had been subjected to intensive picloram selective pressure. Our objective was to determine the mode of inheritance for this resistance trait. Transmission of the resistant phenotype was monitored in reciprocal F1 crosses between susceptible (SCI) and resistant (RDW) plants, their testcross and pseudo-F2 progeny. Progeny from all crosses, as well as RDW and SCI seedlings of original populations, were sprayed with picloram or clopyralid to distinguish between susceptible and resistant individuals. All F1 progeny were susceptible to both herbicides, indicating that the resistance trait was of nuclear origin and Recessive in nature. Segregation of the resistant phenotype among pseudo-F2 and testcross progeny of F1 genotypes demonstrated monofactorial inheritance (P ..25)for resistance to both herbicides. The conclusion that resistanceis conferred by a single Recessive allele is consistent with the observation that no other picloramresistant yellow starthistle populations have been identified in the area since picloram selection pressure was abated. Yellow starthistle (Centaurea solstitialis L.) is a highly competitive diploid winter annual of Eurasian origin that is advancing steadily on western rangelands of the United States. This noxious weed can be controlled effectively at the seedling stage by foliar application of the pyridinecarboxylic acid herbicides picloram or clopyralid. These compounds are
Yoshiyuki Imura - One of the best experts on this subject based on the ideXlab platform.
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high resolution mapping of zym a Recessive Gene for zucchini yellow mosaic virus resistance in cucumber
Theoretical and Applied Genetics, 2013Co-Authors: Masashi Amano, Akira Mochizuki, Yumi Kawagoe, Keisuke Iwahori, Kaori Niwa, Jiri Svoboda, Takanori Maeda, Yoshiyuki ImuraAbstract:Key message Using a high-resolution mapping approach, we identified a candidate Gene for ZYMV resistance in cucumber. Our findings should assist the development of high-versatility molecular markers for MAS for ZYMV resistance.
J D Miller - One of the best experts on this subject based on the ideXlab platform.
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inheritance of resistance to pathotypes qcc and mcc of puccinia graminis f sp tritici in barley line q21861 and temperature effects on the expression of resistance
Phytopathology, 1994Co-Authors: Yue Jin, B J Steffenson, J D MillerAbstract:Barley line Q21861 is one of several accessions that possess resistance to pathotypes QCC and MCC of Puccinia graminis f. sp. tritici. Crosses were made between Q21861 and several barley cultivars to study the inheritance of resistance to pathotypes QCC and MCC. Progeny evaluations indicated that resistance to pathotype QCC in Q21861 was conferred by a Recessive Gene that conditioned low infection types at low incubation temperatures (18-20 C). This Gene was ineffective against pathotype QCC at incubation temperatures greater than 27 C. Resistance to pathotype MCC in Q21861 was controlled by two Genes, one dominant and one Recessive, that segregated independently. The dominant Gene is allelic to Rpg 1, and the Recessive Gene identified is the same one conferring resistance to pathotype QCC [...]
