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44 results for “Plant breeding”
Fig. 3 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 3 Head skeletons of Eumerus, lateral view. a Eumerus alpinus. b Eumerus figurans. c Eumerus superbus. D dorsal cornu, L mandibular lobe, M mandibular hook, P pharyngeal ridges, T accessory tooth, V ventral cornu. Scale lines = 250 μm
Fig. 7 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 7 Total count of described early stages of Eumerus (triangles) and total count of known life cycles of early stages of Eumerus species (squares) by the first time a host-plant interaction was reported. X-axis shows years. Y-axis, number of Eumerus species
Fig. 6 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 6 Posterior respiratory processes (PRP) of Eumerus larvae and puparia in dorsal view (left) and polar view (right). a, b Eumerus alpinus, puparium; SEM. c, d Eumerus figurans, larva; stereo microscope. e, f Eumerus superbus, puparium; SEM. α distance from the transverse ridge to the center of the spiracular plate, β width of the PRP at the transverse ridge level, C* spiracular scar, O spiracular opening, R transverse ridge, S spiracular seta. Scale lines: a and e = 500 μm; b and c = 250 μm; d = 100 μm; f = 200 μm
Fig. 5 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 5 Pupal spiracles (PS) of Eumerus puparia (left) and details of the tubercles bearing spiracular openings (right). a, b Eumerus alpinus. c, d Eumerus superbus. O spiracular opening. Scale lines: a = 100 μm; b and d = 50 μm; c = 250 μm
Fig. 9 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 9 Feeding network between larvae of Eumerus species (left, in gray) and plant tissues they feed on (right, colored) based on the interactions historically reported in bibliography for different genera of plants. Links between sides indicate relationships. Scales on each segment show the number of interactions established with the counter side. Plant tissue color palette as follows: tuber (yellow), swollen root (orange), rhizome (brown), processed material (black), fruits (red), stem (light green), corm (purple), cone (pink), and bulb (blue). Picture made using "circlize" package for R software
Figure 4 from: Jiao R-J, Bai L-H, Gao J-J (2020) Descriptions of two new species of the genus Colocasiomyia (Diptera, Drosophilidae) breeding on Rhaphidophora host plants in Yunnan, China. ZooKeys 968: 127-141. https://doi.org/10.3897/zookeys.968.56677
Figure 4 Colocasiomyia todai Jiao & Gao, sp. nov. Adult male (holotype #10122) and female (paratype, #10100) from Ertaipo, Gaoligong Mountains, Baoshan, Yunnan, China A periphallic organs (lateral view) B periphallic organs (ventral view) C surstylus (right one, inner view) D phallic organs (dorsal view) E phallic organs (lateral view) F oviscapt (lateral view). Abbreviations: aed = aedeagus, aed a = aedeagal apodeme, aed b p = aedeagal basal process, cerc = cercus, epand = epandrium, epand a = epandrial apodeme, hypd = hypandrium, pm = paramere, 10S = tenth sternite. Scale bars: 0.1 mm.
Figure 5 from: Jiao R-J, Bai L-H, Gao J-J (2020) Descriptions of two new species of the genus Colocasiomyia (Diptera, Drosophilidae) breeding on Rhaphidophora host plants in Yunnan, China. ZooKeys 968: 127-141. https://doi.org/10.3897/zookeys.968.56677
Figure 5 Colocasiomyia liae Jiao & Gao, sp. nov. Adult male (holotype #10485) and female (paratype, #10486) from Qimaba, Lüchun, Yunnan, China. A periphallic organs (lateral view) B periphallic organs except cerci (ventral view) C tenth sternite (posteroventral view) D phallic organs (dorsal view) E phallic organs (lateral view) F oviscapt (lateral view). Abbreviations: aed = aedeagus, aed a = aedeagal apodeme, aed b p = aedeagal basal process, cerc = cercus, epand = epandrium, epand a = epandrial apodeme, hypd = hypandrium, pm = paramere, 10S = tenth sternite. Scale lines: 0.1 mm.
Figure 3 from: Jiao R-J, Bai L-H, Gao J-J (2020) Descriptions of two new species of the genus Colocasiomyia (Diptera, Drosophilidae) breeding on Rhaphidophora host plants in Yunnan, China. ZooKeys 968: 127-141. https://doi.org/10.3897/zookeys.968.56677
Figure 3 Adult males of the new species: lateral habitus, head (anterior view), head and thorax (dorsal view), wing (ventral view of left one in D dorsal view of right one in I), and fore leg (right one, inner view) A–EColocasiomyia todai Jiao & Gao, sp. nov. (#10122) F–JC. liae Jiao & Gao, sp. nov. (#10485). Scale bars: 1.0 mm except for B, E, G and J (0.5 mm).
Figure 1 from: Jiao R-J, Bai L-H, Gao J-J (2020) Descriptions of two new species of the genus Colocasiomyia (Diptera, Drosophilidae) breeding on Rhaphidophora host plants in Yunnan, China. ZooKeys 968: 127-141. https://doi.org/10.3897/zookeys.968.56677
Figure 1 Two host plant species of Colocasiomyia flies A–DRhaphidophora peepla (Roxb.) Schott (Ertaipo, Mt. Gaoligongshan, Yunnan, China) E–HR. crassicaulis Engl. & Karause (Qimaba, Lüchun, Yunnan, China) A, E plants climbing on tall trees B, F inflorescence buds C, G inflorescences D, H infructescences (with leaves shown together in H).
Figure 2 from: Jiao R-J, Bai L-H, Gao J-J (2020) Descriptions of two new species of the genus Colocasiomyia (Diptera, Drosophilidae) breeding on Rhaphidophora host plants in Yunnan, China. ZooKeys 968: 127-141. https://doi.org/10.3897/zookeys.968.56677
Figure 2 Unrooted neighbor-joining tree of the C. gigantea species group built based on p-distances between COI sequences. Label of each operational taxonomic unit (OTU) is given in the form of "voucher number-GenBank accession number". Numbers beside nodes are bootstrap percentages (shown when ≥ 50; BP based on p-distance/BP based on K2P-distance).
Data from: QuLinePlus: extending plant breeding strategy and genetic model simulation to cross-pollinated populations – case studies in forage breeding
Plant breeders are supported by a range of tools that assist them to make decisions about the conduct or design of plant breeding programs. Simulations are a strategic tool that enable the breeder to integrate the multiple components of a breeding program into a number of proposed scenarios that are compared by a range of statistics measuring the efficiency of the proposed systems. A simulation study for the trait growth score compared two major strategies for breeding forage species, among half-sib family selection and among and within half-sib family selection. These scenarios highlighted new features of the QuLine program, now called QuLinePlus, incorporated to enable the software platform to be used to simulate breeding programs for cross pollinated species. Each strategy was compared across three levels of HS family mean heritability (0.1, 0.5 and 0.9), across three sizes of the initial parental population (10, 50, and 100), and across three genetic effects models (fully additive model, a mixture of additive, partial and over dominance model, and a mixture of partial dominance and over dominance model). Among and within half-sib selection performed better than among half-sib selection for all scenarios. The new tools introduced into QuLinePlus should serve to accurately compare among methods and provide direction on how to achieve specific goals in the improvement of plant breeding programs for cross breeding species.
Data from: Quantitative trait loci from the host genetic background modulate the durability of a resistance gene: a rational basis for sustainable resistance breeding in plants
The combination of major resistance genes with quantitative resistance factors is hypothesized as a promising breeding strategy to preserve the durability of resistant cultivar, as recently observed in different pathosystems. Using the pepper (Capsicum annuum)/Potato virus Y (PVY, genus Potyvirus) pathosystem, we aimed at identifying plant genetic factors directly affecting the frequency of virus adaptation to the major resistance gene pvr23 and at comparing them with genetic factors affecting quantitative resistance. The resistance breakdown frequency was a highly heritable trait (h²=0.87). Four loci including additive quantitative trait loci (QTLs) and epistatic interactions explained together 70% of the variance of pvr23 breakdown frequency. Three of the four QTLs controlling pvr23 breakdown frequency were also involved in quantitative resistance, strongly suggesting that QTLs controlling quantitative resistance have a pleiotropic effect on the durability of the major resistance gene. With the first mapping of QTLs directly affecting resistance durability, this study provides a rationale for sustainable resistance breeding. Surprisingly, a genetic trade-off was observed between the durability of PVY resistance controlled by pvr23 and the spectrum of the resistance against different potyviruses. This trade-off seemed to have been resolved by the combination of minor-effect durability QTLs under long term farmer selection.
Fig. 2 in What do Eumerus Meigen larvae feed on? New immature stages of three species (Diptera: Syrphidae) breeding in different plants
Fig. 2 General shape of Eumerus figurans larva, dorsal view. Scale line = 2 mm
Data from: QuLinePlus: extending plant breeding strategy and genetic model simulation to cross-pollinated populations – case studies in forage breeding
Open the record for dataset details and reuse information.
Data from: Quantitative trait loci from the host genetic background modulate the durability of a resistance gene: a rational basis for sustainable resistance breeding in plants
Open the record for dataset details and reuse information.
Plant breeding involving genetic engineering does not result in unacceptable unintended effects in rice relative to conventional cross-breeding
GEO Series GSE152572. Oryza sativa. 39 samples. Type: Expression profiling by high throughput sequencing.
Inhibition of RNA polymerase II allows controlled mobilisation of retrotransposons for plant breeding [Arabidopsis]
GEO Series GSE99396. Arabidopsis thaliana. 4 samples. Type: Methylation profiling by high throughput sequencing.
Data from: Prediction of genetic values of quantitative traits with epistatic effects in plant breeding populations
Though epistasis has long been postulated to play a critical role in genetic regulation of important pathways as well as provide a major source of variation in the process of speciation, the importance of epistasis for genomic selection in the context of plant breeding is still being debated. In this paper, we report the results on the prediction of genetic values with epistatic effects for 280 accessions in the Nebraska Wheat Breeding Program using adaptive mixed LASSO. The development of adaptive mixed LASSO, originally designed for association mapping, for the context of genomic selection is reported. The results show that adaptive mixed LASSO can be successfully applied to the prediction of genetic values while incorporating both marker main effects and epistatic effects. Especially, the prediction accuracy is substantially improved by the inclusion of two-locus epistatic effects (more than one fold in some cases as measured by cross validation correlation coefficient), which is observed for multiple traits and planting locations. This points to significant potential in using non-additive genetic effects for genomic selection in crop breeding practices.
Fig. 2 in Breeding Avifauna Of The Waste Water Treatment Plants, Located In Northern Left-Bank Part Of Ukraine
Fig. 2. Sketch of waste water treatment plants.
Data from: Prediction of genetic values of quantitative traits with epistatic effects in plant breeding populations
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International Brain Laboratory public data
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OpenNeuro
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