Reaction of sugarcane genotypes to root-knot nematodes (Meloidogyne spp.) in Kenya
View/ Open
Date
2015Author
Chirchir, Alexander K
Kimenju, John W.
Ariga, Emmanuel S.
Kariuki, GeorgeM
Omondi, Chrispine O
Language
enMetadata
Show full item recordAbstract
Resistance/tolerance to some parasitic nematodes has been found to exist in
various sugarcane cultivars in varying degrees. This trait has not been fully
exploited especially in Kenya. Fifteen sugarcane cultivars were randomly
selected and grown under a glass house in a completely randomized design
with three replications over two seasons. Single-budded setts were
inoculated with 2000 J2 root-knot nematodes (Meloidogyne spp.). Infestation
of root-knot nematodes (RKN) on Co 421 reduced fresh root weight by 33%,
reduced tillering of Co421, KEN82-62 and KEN98-530 by 70%, 46% and 33%
respectively, but did not affect those of KEN00-13 and KEN82-121. Uniquely,
nematode inoculation promoted tillering of EAK 70-97 and N14 which
increased by 21% and 30% respectively. Co421 and D8484 hosted the
highest nematode population numbers with mean egg mass indices of 3.0
and 2.5 respectively. Conversely, KEN83-737 and Co945 had lowest
nematode numbers with mean egg mass indices of 0.8. This study
demonstrated that sugarcane cultivars do exhibit varying degrees of host
resistance or tolerance to RKN. The resistant/ tolerant cultivars may be
incorporated into integrated nematode management packages.
URI
http://journalissues.org/wp-content/uploads/2015/06/Chirchir-et-al.pdfhttp://hdl.handle.net/11295/84653
Citation
Chirchir, Alexander K., Kimenju, John W., Ariga, Emmanuel S., Kariuki, GeorgeM., Omondi, Chrispine O., (2015). Reaction of sugarcane genotypes to root-knot nematodes (Meloidogyne spp.) in Kenya. International journal of agricultural policy and research vol.3 (6), pp. 260-266, June 2015Publisher
University of Nairobi