Path analysis: a novel approach to determine the contribution of nematode damage to East African Highland banana (Musa spp., AAA) yield loss under two crop management practices in Uganda

Ssango, F.; Speijer, P.R; Coyne, Danny; Waele, Dirk De

doi:10.1016/j.fcr.2004.02.018

Cited by 33 publications

(24 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…production losses (Gowen et al, 2005;Coyne, 2009). Under certain conditions H. multicinctus is regarded as a key pest of bananas (McSorley & Parrado, 1986) but mostly in combination with R. similis {e.g., Ssango et al, 2004), and in West Africa in combination with Meloidogyne spp. (Caveness & Badra, 1980;Adiko & N'Guessen, 2001;Coyne, 2009).…”

mentioning

confidence: 99%

Pathogenicity and damage potential of five species of plant-parasitic nematodes on plantain (Musa spp., AAB genome) cv. Agbagba

Coyne

Adewuyi²,

Rotifa

et al. 2013

Nematol

View full text Add to dashboard Cite

The pathogenicity of five plant-parasitic nematode species, Radopholus similis, Pratylenchus coffeae, Helicotylenchus multicinctus, Hoplolaimus pararobustus and Meloidogyne spp., commonly recorded from banana and plantain in West and Central Africa, was assessed on plantain (Musa spp., AAB genome) cv. Agbagba in Nigeria. The pest status of H. pararobustus was demonstrated for the first time in addition to H. multicinctus, while the importance of P. coffeae and R. similis was further confirmed. In addition, the study further demonstrated the contribution of nematodes to weakened pseudostems (stems) and stem snapping during periods of low water availability, in the absence of weevil damage. Through a series of experiments, the nematode damage potential was evaluated in 20 1 pots, 701 microplots (halved oil drums) and a field experiment over four crop cycles. In pots only a combination of four species (without H. pararobustus) led to greater root necrosis than the non-inoculated control, while R. similis reduced root mass. In microplots most crop growth parameters were similar across treatments, except root necrosis, which was higher for all nematode treatments than on control plants and more severe on P. coffeae roots than for other nematode species. In the field trial heavy storms disrupted data collection. Plant stem snapping, however, was greater for all nematode treatments compared with controls. Nematode damage indices such as feeder root health and root necrosis were higher in all nematode treatments and consistently so for R. similis and P. coffeae over the first two cropping cycles. Mean bunch weight of harvested plants was lower for all nematode treatments than controls; between 33.3% and 50.8%, even for first cycle mother plants, and consistently lower across crop cycles.

show abstract

mentioning

confidence: 99%

Pathogenicity and damage potential of five species of plant-parasitic nematodes on plantain (Musa spp., AAB genome) cv. Agbagba

Coyne

Adewuyi²,

Rotifa

et al. 2013

Nematol

View full text Add to dashboard Cite

show abstract

“…Such data provide further evidence of the damaging nature of H. multicinctus, the status of which is often obscured in the presence of R. similis or in mixed species communities. Distinguishing the effect of individual nematodes among combinations of species can be challenging, although path analysis proved useful in identifying the pathogenic effect of H. multicinctus on East African highland banana from mixed populations (Ssango et al 2004). Surprisingly, the R. similis-susceptible 'Valery' (Speijer et al 2000b;Dochez et al 2009) had only limited yield reduction under inoculated conditions.…”

Section: Discussionmentioning

confidence: 96%

Measurement of the field response of Musa genotypes to Radopholus Similis and Helicotylenchus Multicinctus and the implications for nematode resistance breeding

et al. 2010

Self Cite

View full text Add to dashboard Cite

Crop growth and damage parameters (plant growth and yield, root damage and nematode population densities), believed to be associated with resistance of Musa genotypes to nematodes under field conditions, were evaluated in a field trial of 24 Musa genotypes inoculated at planting with a combination of Radopholus similis and Helicotylenchus multicinctus with the objective to identify parameters with strong association with nematode resistance and high heritability. Correlation and path analysis of the association between plant growth, yield, root damage and nematode population densities showed a strong negative association between percentage dead roots, percentage root necrosis, R. similis and H. multicinctus population densities and yield. The strongest negative association was observed between percentage dead roots and yield. Broad-sense genotype heritability estimates demonstrated that heritability estimates for percentage dead roots, number of large lesions and nematode population density were most affected by inoculation with nematodes. These results indicate therefore that effective selection for nematode resistance under field conditions could be obtained by using an index, that includes percentage dead roots, the number of large lesions, and nematode population density.

show abstract

“…Therefore, it did not increase with a decrease in R. similis population density. Nevertheless, it is difficult to distinguish the effect of individual nematodes among combinations of species, although the use of path analysis has helped identify the pathogenic effect of H. multicinctus on East African Highland banana (Musa spp., AAA) (Ssango et al, 2004). The other nematode species present in the inoculum, particularly H. pararobustus, remained at low population densities throughout the experiment and most likely contributed little to overall plantain damage, even though high densities of all the other nematodes were inoculated.…”

Section: Discussionmentioning

confidence: 98%

Effects of nematode infection and mulching on the yield of plantain (Musa spp., AAB-group) ratoon crops and plantation longevity in southeastern Nigeria

Coyne¹,

Rotimi²,

Speijer³

et al. 2005

Nematol

View full text Add to dashboard Cite

The effects of nematode infection and mulching on plantain cv. Agbagba (Musa spp., AAB-group, false horn) yield and plantation longevity were examined in a field experiment at the High Rainfall Station of the International Institute of Tropical Agriculture (IITA) at Onne in southeastern Nigeria. The 2nd, 3rd and 4th crop cycles (1st, 2nd and 3rd ratoon, respectively) following the plant crop cycle (mother crop) were examined in nematode inoculated or non-inoculated and mulched or nonmulched treatments. Nematodes (Radopholus similis, Helicotylenchus multicinctus and, to a lesser extent, Helicotylenchus dihystera, Hoplolaimus pararobustus and Meloidogyne spp.) were inoculated at planting of the mother plant, but were also present in relatively high population densities in the non-inoculated treatments at harvest of the 1st crop cycle. Plants inoculated with nematodes failed to reach harvest and neither did plants in the non-inoculated non-mulched treatments in any ratoon. Only non-inoculated mulched plants reached harvest, producing 0.85, 1.22 and 0.2 Mg ha −1 , respectively in the 1st, 2nd and 3rd ratoon, taking toppled, broken and dead plants into consideration. Mulched plants were larger, had more suckers, survived longer and had healthier root systems compared with non-mulched plants. Damage to roots was greater in the inoculated plants compared with the non-inoculated plants for the 1st and 2nd ratoons but not for the 3rd ratoon. Radopholus similis was most strongly associated with root damage (percentage root necrosis and dead roots), although H. multicinctus population densities were also positively correlated with percentage root necrosis. At flowering of the 1st ratoon, 71% of the inoculated non-mulched plants were dead compared with only 1% of the non-inoculated mulched plants. Helicotylenchus multicinctus remained the most abundant nematode throughout the experiment. Together with R. similis, it comprised over 95% of the plant-parasitic nematode population.

show abstract

Path analysis: a novel approach to determine the contribution of nematode damage to East African Highland banana (Musa spp., AAA) yield loss under two crop management practices in Uganda

Cited by 33 publications

References 15 publications

Pathogenicity and damage potential of five species of plant-parasitic nematodes on plantain (Musa spp., AAB genome) cv. Agbagba

Pathogenicity and damage potential of five species of plant-parasitic nematodes on plantain (Musa spp., AAB genome) cv. Agbagba

Measurement of the field response of Musa genotypes to Radopholus Similis and Helicotylenchus Multicinctus and the implications for nematode resistance breeding

Effects of nematode infection and mulching on the yield of plantain (Musa spp., AAB-group) ratoon crops and plantation longevity in southeastern Nigeria

Contact Info

Product

Resources

About