STATUS AND DISTRIBUTION OF ROOT KNOT NEMATODE (Meloidogyne graminicola Golden & Birchfield, 1965) AND OTHER PLANT PARASITIC NEMATODES ASSOCIATED WITH RICE (Oryza sativa L.) IN ALMORA AND NAINITAL DISTRICTS OF UTTARAKHAND

Simple item page
dc.contributor.advisorKumay, Satya
dc.contributor.authorKumar, Abhishek
dc.date.accessioned2024-08-24T11:07:58Z
dc.date.available2024-08-24T11:07:58Z
dc.date.issued2023-07
dc.description.abstractAn extensive survey was conducted in Nainital and Almora districts of the Uttarakhand to identify the status, distribution, and prevalence of Plant Parasitic Nematodes (PPN) associated with the rice. Total of 139 villages were surveyed and from each village 3 samples were taken, each from the different rice field. GIS software was used for the location mapping. Microscopic morphological studies revealed the presence of 11 genera of PPN’s viz., Meloidogyne spp., Hirschmanniella spp., Heterodera spp., Helicotylenchus spp., Tylenchorhynchus spp., Hoplolaimus spp., Ditylenchus spp., Pratylenchus spp., Tylenchus spp., Criconemoides spp. and Xiphinema spp. In Nainital district, the most prevalent nematodes genera were Meloidogyne spp., Helicotylenchus spp. and Pratylenchus spp. These nematodes were showing 100 per cent frequency of occurrence in all three blocks that were surveyed. The highest population of Meloidogyne spp. was recorded in the village Bailpadav of Kotabagh in Nainital district (49669 J2/ gm of root and 6547 J2/ 200 cc of soil). In Almora district predominant genera were Meloidogyne spp., Hirschmanniella spp., Helicotylenchus spp., Ditylenchus spp. and Tylenchorhynchus spp. The highest population of Meloidogyne spp. in Almora district was recorded in village Chaunada of Takula block (32350 J2/ gm of rice root and 3216 J2 / 200 cc of soil). The highest population of Hirschmanniella spp. was recorded in village Kunal banga of Hawal bagh block (654 individuals/ 200 cc of soil). Heterodera spp. was only identified in the Almora district and was prevalent above 1000 m (MSL). In correlation study, it was seen that PH and soil temperature in negatively correlated with the population of Criconemoides spp., Ditylenchus spp., Hoplolaimus spp., Helicotylenchus spp., Hirschmanniella spp., Meloidogyne spp. and Pratylenchus spp. while soil carbon and soil moisture showed positive correlation with the population Criconemoides spp., Ditylenchus spp., Hoplolaimus spp., Helicotylenchus spp., Hirschmanniella spp. and Meloidogyne spp. Heterodera spp. showed positive correlation with altitude in Almora district. The analysis of the genera of plant parasitic nematodes in the Almora district produced a Shannon-Wiener diversity index of 0.959 and Pielou's J Species evenness of 0.219 whereas The analysis of the genera of plant parasitic nematodes in the Nainital district produced a Shannon-Wiener diversity index of 1.046 and Pielou's J Species evenness of 0.255. Based on survey, it can be inferred that occurrence of rice root knot nematode is a serious threat to rice cultivation and it may emerge as the serious endemic pest in Uttarakhand. Instant attention of the administrators and researchers is required to take appropriate decision for planning strong domestic quarantine regulation to limit their further spread.
dc.identifier.citationTheses of M.Sc.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810213696
dc.language.isoEnglish
dc.pages107 p.p.
dc.publisherG. B. Pant University of Agriculture & Technology, Pantnagar-263145
dc.relation.ispartofseries10884
dc.subPlant Pathology
dc.themeAcademic Research
dc.these.typeM.Sc
dc.titleSTATUS AND DISTRIBUTION OF ROOT KNOT NEMATODE (Meloidogyne graminicola Golden & Birchfield, 1965) AND OTHER PLANT PARASITIC NEMATODES ASSOCIATED WITH RICE (Oryza sativa L.) IN ALMORA AND NAINITAL DISTRICTS OF UTTARAKHAND
dc.typeThesis
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Abhishek Kumar, Id.No. 58214, M.Sc.Ag..pdf
Size:
5.17 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Theses