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pro vyhledávání: '"Richard W. Gibson"'
Autor:
Richard W. Gibson
After a long career in agricultural research in the UK and then in Africa, Richard Gibson ‘retired'and got an allotment. In his work, he had found that African smallholders often rejected varieties bred for them on research stations – and that pa
Autor:
Victor Gaba, Anthony Okiror, Amit Gal-On, Liat Avrahami-Moyal, Settumba B. Mukasa, Yehudit Tam, Peter Wasswa, Alexander Ssamula, Richard W. Gibson
Publikováno v:
The Annals of Applied Biology
Viruses limit sweetpotato (Ipomoea batatas) production worldwide. Many sweetpotato landraces in East Africa are, however, largely virus-free. Moreover, some plants infected by the prevalent Sweet potato feathery mottle virus (SPFMV) may be able to re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c8a983a88cf822fd35be42e47762070
http://europepmc.org/articles/PMC7053384
http://europepmc.org/articles/PMC7053384
Publikováno v:
HortScience. 54:117-124
Sweetpotato is usually propagated in Uganda by vine cuttings from mature crops, but sometimes sprouts from storage roots are used, especially in drought-prone areas. No information is available on whether the storage of roots of Ugandan cultivars are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ab265e5e75a84bc4af623298d1e25b5
https://doi.org/10.21273/hortsci13392-18
https://doi.org/10.21273/hortsci13392-18
Publikováno v:
International Journal of Asian Social Science. 8:213-226
The absence of formal institutions regulating water resources indicated a need to examine how informal governance works in semi-arid areas of the Lake Zone of Tanzania. Ostrom’s theory of common property resources was adapted to develop a questionn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f794b1507acdb6571e40d8fb681ba9bc
https://doi.org/10.18488/journal.1.2018.85.213.226
https://doi.org/10.18488/journal.1.2018.85.213.226
Publikováno v:
Journal of Crop Improvement. :1-18
It is shown for the first time how participatory variety demonstration (PVD) trials can establish modern varieties in informal seed systems in a developing country by targeting nodal multipliers occupying hub locations. A series of relatively few, sm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fd9f48d38aa3fb0226ab7780de3e40a
https://doi.org/10.1080/15427528.2017.1282910
https://doi.org/10.1080/15427528.2017.1282910
Autor:
Richard W. Gibson, Karen A. Garrett, Paul Rachkara, Stephen W. Kalule, Kelsey F. Andersen, Christopher E. Buddenhagen, David Phillips
Publikováno v:
Phytopathology
Seed systems are critical for deployment of improved varieties but also can serve as major conduits for the spread of seedborne pathogens. As in many other epidemic systems, epidemic risk in seed systems often depends on the structure of networks of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::508becacca14cd6a69686f6afc5beea8
https://pubmed.ncbi.nlm.nih.gov/30785374
https://pubmed.ncbi.nlm.nih.gov/30785374
Publikováno v:
Journal of Phytopathology. 164:242-254
Sweet potato feathery mottle virus (SPFMV) and Sweet potato chlorotic stunt virus (SPCSV) are the most common viruses infecting sweetpotato in Uganda. Field plots planted with graft inoculated plants of virus-free cultivars Beauregard, Dimbuka, Ejumu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3973d5b1381e741b219ab39a81bbb62
https://doi.org/10.1111/jph.12451
https://doi.org/10.1111/jph.12451
Autor:
Kelsey F. Andersen, Christopher E. Buddenhagen, Richard W. Gibson, David Phillips, Paul Rachkara, Karen A. Garrett, Stephen W. Kalule
Seed systems are critical for deployment of improved varieties, and serve as major conduits for the spread of seed-borne pathogens. Vegetatively propagated crops in low-income countries are particularly vulnerable to seed degeneration, where yield is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b79ee076f5ba77c499e18bc7bf6a3424
Autor:
Richard W. Gibson
Publikováno v:
Food Security. 5:781-791
Sweet potato varieties are distributed in Uganda by three systems: formal, project-based and informal. In a partial formal system, the National Sweetpotato Program (NSP) breeds and tests both orange (O)- and white (W)-fleshed sweet potato (FSP) varie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bdd8423f0898b8f29bec7b64fcfd475
https://doi.org/10.1007/s12571-013-0302-8
https://doi.org/10.1007/s12571-013-0302-8
Publikováno v:
Journal of Crop Improvement. 27:67-84
Ugandan farmers preferred vine cuttings from sweet potato (Ipomoea batatas (L) Lam.) plants maintained during the dry season in a swamp or by irrigation as planting material rather than cuttings from volunteer plants growing from unharvested roots. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8621d86e10a21cf74e35b946687a4f57
https://doi.org/10.1080/15427528.2012.727376
https://doi.org/10.1080/15427528.2012.727376