Response of green manure species and millet cultivars to different populations of Meloidogyne javanica

ABSTRACT The use of non-host cover crops is a key strategy for controlling root-knot nematodes in infested fields. However, pathogenicity of nematodes to cover crops may vary between populations and localities. This study assessed the response of green manure species and millet (Pennisetum glaucum (...

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Autores principales:	Chidichima,Lana, Miamoto,Angélica, Rinaldi,Luanna, Corrêia,Arlindo, Dias-Arieira,Cláudia
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2021
Materias:	Aggressiveness cover crops Pennisetum glaucum root-knot nematode.
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300310
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spelling	oai:scielo:S0718-583920210003003102021-08-16Response of green manure species and millet cultivars to different populations of Meloidogyne javanicaChidichima,LanaMiamoto,AngélicaRinaldi,LuannaCorrêia,ArlindoDias-Arieira,Cláudia Aggressiveness cover crops Pennisetum glaucum root-knot nematode. ABSTRACT The use of non-host cover crops is a key strategy for controlling root-knot nematodes in infested fields. However, pathogenicity of nematodes to cover crops may vary between populations and localities. This study assessed the response of green manure species and millet (Pennisetum glaucum (L.) R.Br.) cultivars to four populations of Meloidogyne javanica (denominated Mj-2, Mj-3, Mj-6 and Mj-7). Seedlings of radish (Raphanus sativus L.), pigeon pea (Cajanus cajan (L.) Huth) ‘IAPAR 43’, buckwheat (Fagopyrum esculentum Moench) ‘IPR 92-Altar’ and millet ‘BRS 1501’, ‘ADR 300’ and ‘ADR 500’ were inoculated with 1000 eggs and second-stage juveniles of M. javanica. Soybean (Glycine max (L.) Merr.) ‘M6210 IPRO’ was used as control. At 60 d after inoculation, plants were evaluated for root fresh weight, gall index (GI), number of nematodes per gram of root and reproduction factor (RF). For GI, Mj-3 and Mj-6 were the most aggressive to soybean (GI = 5.0). In pigeon pea, Mj-7 resulted in the highest GI (3.5). Radish had the lowest GI (0.67) with Mj-2. For buckwheat, Mj-3 was the most aggressive population, with a GI of 4.50. Mj-3 and Mj-7 resulted in the highest GI in ‘ADR 300’, and Mj-6 and Mj-7 in ‘ADR 500’. The reproductive ability of nematode populations differed between hosts. Mj-2 was the most pathogenic to ‘ADR 300’ (RF = 10.88), Mj-3 to buckwheat (RF = 53.46) and radish (RF = 4.81), Mj-6 to ‘ADR 500’ (RF = 19.58) and Mj-7 to pigeon pea (RF = 2.99) and ‘BRS 1501’ (RF = 15.05). Soybean was susceptible to all M. javanica populations (RF = 33.69 to 257.22). Green manure species and millet cultivars varied in their responses to M. javanica populations of different origins.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.81 n.3 20212021-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300310en10.4067/S0718-58392021000300310
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aggressiveness cover crops Pennisetum glaucum root-knot nematode.
spellingShingle	Aggressiveness cover crops Pennisetum glaucum root-knot nematode. Chidichima,Lana Miamoto,Angélica Rinaldi,Luanna Corrêia,Arlindo Dias-Arieira,Cláudia Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
description	ABSTRACT The use of non-host cover crops is a key strategy for controlling root-knot nematodes in infested fields. However, pathogenicity of nematodes to cover crops may vary between populations and localities. This study assessed the response of green manure species and millet (Pennisetum glaucum (L.) R.Br.) cultivars to four populations of Meloidogyne javanica (denominated Mj-2, Mj-3, Mj-6 and Mj-7). Seedlings of radish (Raphanus sativus L.), pigeon pea (Cajanus cajan (L.) Huth) ‘IAPAR 43’, buckwheat (Fagopyrum esculentum Moench) ‘IPR 92-Altar’ and millet ‘BRS 1501’, ‘ADR 300’ and ‘ADR 500’ were inoculated with 1000 eggs and second-stage juveniles of M. javanica. Soybean (Glycine max (L.) Merr.) ‘M6210 IPRO’ was used as control. At 60 d after inoculation, plants were evaluated for root fresh weight, gall index (GI), number of nematodes per gram of root and reproduction factor (RF). For GI, Mj-3 and Mj-6 were the most aggressive to soybean (GI = 5.0). In pigeon pea, Mj-7 resulted in the highest GI (3.5). Radish had the lowest GI (0.67) with Mj-2. For buckwheat, Mj-3 was the most aggressive population, with a GI of 4.50. Mj-3 and Mj-7 resulted in the highest GI in ‘ADR 300’, and Mj-6 and Mj-7 in ‘ADR 500’. The reproductive ability of nematode populations differed between hosts. Mj-2 was the most pathogenic to ‘ADR 300’ (RF = 10.88), Mj-3 to buckwheat (RF = 53.46) and radish (RF = 4.81), Mj-6 to ‘ADR 500’ (RF = 19.58) and Mj-7 to pigeon pea (RF = 2.99) and ‘BRS 1501’ (RF = 15.05). Soybean was susceptible to all M. javanica populations (RF = 33.69 to 257.22). Green manure species and millet cultivars varied in their responses to M. javanica populations of different origins.
author	Chidichima,Lana Miamoto,Angélica Rinaldi,Luanna Corrêia,Arlindo Dias-Arieira,Cláudia
author_facet	Chidichima,Lana Miamoto,Angélica Rinaldi,Luanna Corrêia,Arlindo Dias-Arieira,Cláudia
author_sort	Chidichima,Lana
title	Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
title_short	Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
title_full	Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
title_fullStr	Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
title_full_unstemmed	Response of green manure species and millet cultivars to different populations of Meloidogyne javanica
title_sort	response of green manure species and millet cultivars to different populations of meloidogyne javanica
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392021000300310
work_keys_str_mv	AT chidichimalana responseofgreenmanurespeciesandmilletcultivarstodifferentpopulationsofmeloidogynejavanica AT miamotoangelica responseofgreenmanurespeciesandmilletcultivarstodifferentpopulationsofmeloidogynejavanica AT rinaldiluanna responseofgreenmanurespeciesandmilletcultivarstodifferentpopulationsofmeloidogynejavanica AT correiaarlindo responseofgreenmanurespeciesandmilletcultivarstodifferentpopulationsofmeloidogynejavanica AT diasarieiraclaudia responseofgreenmanurespeciesandmilletcultivarstodifferentpopulationsofmeloidogynejavanica
_version_	1714205411674947584

Response of green manure species and millet cultivars to different populations of Meloidogyne javanica

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