Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2018
Forfattere
Anette SundbyeSammendrag
Det er ikke registrert sammendrag
Forfattere
Anette SundbyeSammendrag
Årenebbmott er en av de vanligste "grasmøll" artene i familien Crambidae. Larvene forårsaker skader i grasmark, spesielt i permanent beite og eng. Ved kraftige angrep kan larvene forårsake dødt eller døende gras over store områder. Arten opptrer og forårsaker skade i selskap med andre skadedyr i gras, som f.eks. oldenborrer og stankelbein.
Forfattere
Harrison Mburu Laura Cortada Grace Mwangi Kelvin Gitau Agnes Kiriga Zachary Kinyua George Ngundo Wilson Ronno Daniel Leigh Coyne Ricardo Holgado Solveig HaukelandSammendrag
Det er ikke registrert sammendrag
Forfattere
Nina Elisabeth NagySammendrag
Det er ikke registrert sammendrag
Forfattere
Nina Elisabeth NagySammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Lise Nistrup Jørgensen Annemarie Justesen Min Lin Morten Lillemo Andrea Ficke Pao Theen See Richard Oliver Melanie Stadlmeier Volker Mohler Lorenz Hartl Judith Turner James CockramSammendrag
Det er ikke registrert sammendrag
Forfattere
Zelalem Bekeko Chemeda Fininsa Dagne Wegary Temam Hussien Shimelis Hussien Belachew Asalf TadesseSammendrag
Ten elite maize inbred lines were selected based on all over per se performance and gray leaf spot disease reaction. Crosses were made in a 10×10 half-diallel mating design to produce 45 F1 single cross hybrids. The experiment was conducted at Bako national maize research center in 2015 and evaluation of the crosses were made at Bako and Jimma research centers in 2016 by using alpha lattice design with three replications including three commercial checks. All the necessary yield, agronomic and GLS disease data were recorded. In all the studied traits highly significant genotypic differences were observed indicating the existence of genetic variability among the crosses. Analysis of variance for the combining ability indicated GCA and SCA mean squares were significant at (P < 0.001) for all traits except for anthesis-silking interval, ear per plant, ear diameter, lesion length and width. The ratios of GCA/SCA variances for agronomic parameters and all disease parameters were greater than unity except for that of first disease appearance implying the predominance of additive gene actions. Among all inbred lines, P1, P4, P7, P8 and P9 were identified as desirable sources of resistant genes for GLS disease resistance with positive days of first disease appearance and negative disease incidence, severity and AUDPC values for GCA effects. From the analysis of epidemiological data and disease progress curves the Logistic model (R2=96.5) better described the disease progress curves than the Gompertz model (R2=92.5) indicating the presence of delayance in epidemics and the inflection point of the GLS. P1, P7 and P8 were identified as a good general combiners for yield, yield related traits and GLS disease parameters. Thus, these parents were recommended to be used in breeding programs with a purpose of developing high yielder and GLS resistant single cross hybrids. In conclusion this study identified potential high yielding and GLS resistant single cross hybrids (CML-395/CML-383, CML-395/Sc-22, CML-395/CML-197 and CML-383/CML-197). Therefore, it is recommended that these hybrids can be used for direct production where this disease is the most prevalent and/or for further breeding programs in generating novel hybrids for future use.