Screening of citrus cultivars against root-knot nematode (Tylenchulus semipenetrans)
Paper Details
Screening of citrus cultivars against root-knot nematode (Tylenchulus semipenetrans)
Abstract
Citrus is a highly remunerative horticultural crop in Pakistan. Due to many biotic factors, its yield in Pakistan is low as compared to other citrus-producing countries. Among the biotic factors, citrus nematode (Tylenchulus semipenetrans) is considered a vital yield-limiting factor. The present study was planned to investigate resistance or susceptibility levels of different citrus cultivar to T. semipenetrans. To examine nematode infestation with the roots of citrus cultivars, a screening nursery was established at the College of Agriculture (CoA), University of Sargodha, Sargodha during 2016-17. The results revealed that nematode infestation was significantly different (P<0.05) in roots and soil samples collected fromdifferent citrus cultivars. Among 10 citrus cultivars, four cultivars i.e., Musambi, Succari, Feutrell’s early, and Kinnow proved to be susceptible tothe nematode. Rough lemon was moderately susceptible. Sweet lime proved to be moderately resistant while four cultivars including grapefruit, Rubby blood, Eustis lime, and Taroccowere resistant to T. semipenetrans.
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