Nematode diversity and its association with soil properties in monocrop pigeon pea
Pigeon pea is a versatile pulse crop grown in semi-arid regions of Kenya; however, its production is affected by plant-parasitic nematodes. The current study was undertaken to investigate the diversity of nematodes and the influence of soil properties on their diversity in monocrop pigeon pea fields...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Journal of Agriculture and Food Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666154322000692 |
| _version_ | 1828357208409112576 |
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| author | Samuel Maina Hannah Karuri Julius Mugweru |
| author_facet | Samuel Maina Hannah Karuri Julius Mugweru |
| author_sort | Samuel Maina |
| collection | DOAJ |
| description | Pigeon pea is a versatile pulse crop grown in semi-arid regions of Kenya; however, its production is affected by plant-parasitic nematodes. The current study was undertaken to investigate the diversity of nematodes and the influence of soil properties on their diversity in monocrop pigeon pea fields in Mbeere North, Embu County, Kenya. Soil samples were collected from Gatunguru B, Gwakaithi, Itururi, Kambungu, Kanyueri, Karigiri, Mbangua and Njarange regions. From each field, soil samples were collected from a depth of 25 cm using W-shaped sampling pattern. The nematodes were identified to the genus level using morphological features. In total, 46 nematode genera assigned to five trophic levels were identified across the eight regions. Abundance of Meloidogyne, Rotylenchulus, Longidorus, Acrobeloides, Cervidellus, Panagrolaimus, Prismatolaimus and Wilsonema varied markedly among the eight regions. Bacterivores belonging to colonizer-persister group 2 were the most prevalent group. There were no differences in Pielou's evenness, genus richness, Shannon and Simpson diversity indices across the regions. Canonical correspondence analysis indicated significant correlations between certain nematode genera and soil attributes with the first two axes accounting for 56.65% of the variance. Acrobeloides correlated positively with Mg, C, Mn and N, and negatively with Fe. The occurrence of Hoplolaimus and Mesorhabditis was associated negatively with soil pH, clay and Ca, and positively with sand. The present work reveals a high abundance of economically important PPN in monocrop pigeon pea which necessitates that appropriate nematode management programs are implemented. |
| first_indexed | 2024-04-14T03:11:43Z |
| format | Article |
| id | doaj.art-870f3fe9ee4643b2bb56d97821f66871 |
| institution | Directory Open Access Journal |
| issn | 2666-1543 |
| language | English |
| last_indexed | 2024-04-14T03:11:43Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Agriculture and Food Research |
| spelling | doaj.art-870f3fe9ee4643b2bb56d97821f668712022-12-22T02:15:35ZengElsevierJournal of Agriculture and Food Research2666-15432022-09-019100336Nematode diversity and its association with soil properties in monocrop pigeon peaSamuel Maina0Hannah Karuri1Julius Mugweru2Department of Biological Sciences, University of Embu, P.O Box 6-60100, Embu, KenyaCorresponding author.; Department of Biological Sciences, University of Embu, P.O Box 6-60100, Embu, KenyaDepartment of Biological Sciences, University of Embu, P.O Box 6-60100, Embu, KenyaPigeon pea is a versatile pulse crop grown in semi-arid regions of Kenya; however, its production is affected by plant-parasitic nematodes. The current study was undertaken to investigate the diversity of nematodes and the influence of soil properties on their diversity in monocrop pigeon pea fields in Mbeere North, Embu County, Kenya. Soil samples were collected from Gatunguru B, Gwakaithi, Itururi, Kambungu, Kanyueri, Karigiri, Mbangua and Njarange regions. From each field, soil samples were collected from a depth of 25 cm using W-shaped sampling pattern. The nematodes were identified to the genus level using morphological features. In total, 46 nematode genera assigned to five trophic levels were identified across the eight regions. Abundance of Meloidogyne, Rotylenchulus, Longidorus, Acrobeloides, Cervidellus, Panagrolaimus, Prismatolaimus and Wilsonema varied markedly among the eight regions. Bacterivores belonging to colonizer-persister group 2 were the most prevalent group. There were no differences in Pielou's evenness, genus richness, Shannon and Simpson diversity indices across the regions. Canonical correspondence analysis indicated significant correlations between certain nematode genera and soil attributes with the first two axes accounting for 56.65% of the variance. Acrobeloides correlated positively with Mg, C, Mn and N, and negatively with Fe. The occurrence of Hoplolaimus and Mesorhabditis was associated negatively with soil pH, clay and Ca, and positively with sand. The present work reveals a high abundance of economically important PPN in monocrop pigeon pea which necessitates that appropriate nematode management programs are implemented.http://www.sciencedirect.com/science/article/pii/S2666154322000692Cajanus cajanNematode community structureShannon diversity |
| spellingShingle | Samuel Maina Hannah Karuri Julius Mugweru Nematode diversity and its association with soil properties in monocrop pigeon pea Journal of Agriculture and Food Research Cajanus cajan Nematode community structure Shannon diversity |
| title | Nematode diversity and its association with soil properties in monocrop pigeon pea |
| title_full | Nematode diversity and its association with soil properties in monocrop pigeon pea |
| title_fullStr | Nematode diversity and its association with soil properties in monocrop pigeon pea |
| title_full_unstemmed | Nematode diversity and its association with soil properties in monocrop pigeon pea |
| title_short | Nematode diversity and its association with soil properties in monocrop pigeon pea |
| title_sort | nematode diversity and its association with soil properties in monocrop pigeon pea |
| topic | Cajanus cajan Nematode community structure Shannon diversity |
| url | http://www.sciencedirect.com/science/article/pii/S2666154322000692 |
| work_keys_str_mv | AT samuelmaina nematodediversityanditsassociationwithsoilpropertiesinmonocroppigeonpea AT hannahkaruri nematodediversityanditsassociationwithsoilpropertiesinmonocroppigeonpea AT juliusmugweru nematodediversityanditsassociationwithsoilpropertiesinmonocroppigeonpea |