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Report Of The Grains Working Group (Rice, Sorghum And Wheat), Donna Mitten
Report Of The Grains Working Group (Rice, Sorghum And Wheat), Donna Mitten
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The grains working group identified three crops which have sexually compatible weedy relatives likely to be subject to gene flow in US agricultural systems (Table 1). The ease of cross pollination and the successful production of a fertile hybrid vary with each case. If the selective advantage of an introduced trait is positive, however, introgression of the new trait into an existing weed population is possible. The risk of ecological harm is then dependent upon the habitat of the weed. In the crop-weed complexes considered here, in which the habitat of the weedy relative is limited to agricultural systems, the …
Detection Of Parasitized Rice Weevils In Wheat Kernels With Near-Infrared Spectroscopy, James E. Baker, Floyd E. Dowell, James E. Throne
Detection Of Parasitized Rice Weevils In Wheat Kernels With Near-Infrared Spectroscopy, James E. Baker, Floyd E. Dowell, James E. Throne
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Individual kernels of wheat containing immature rice weevils, Sitophilus oryzae (L.) (Coleoptera: Curculionidae), parasitized by Anisopteromalus calandrae (Howard) (Hymenoptera: Pteromalidae) could be separated from uninfested kernels and kernels that contained unparasitized weevils by using near-infrared (NIR) spectroscopy.Wheat kernels from cultures of the parasitoid were X-rayed and sorted into uninfested kernels, kernels infested with weevil larvae or pupae, kernels containing parasitoid larvae feeding on host weevils, and kernels containing parasitoid pupae and remains of the host. Kernels were automatically positioned and scanned (400–1700 nm) with the NIR system. Kernels containing parasitoid pupae were completely differentiated from kernels containing weevil pupae as …