Origins of susceptibility to insect herbivores in high-yielding hybrid and inbred rice genotypes

Horgan, Finbarr G.; Almazan, Maria Liberty P.; Bernal, Carmencita C.; Dilla-Ermita, Christine Jade; Ardestani, Goli; Mundaca, Enrique A.; Crisol-Martínez, Eduardo

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dc.contributor.author	Horgan, Finbarr G.
dc.contributor.author	Almazan, Maria Liberty P.
dc.contributor.author	Bernal, Carmencita C.
dc.contributor.author	Dilla-Ermita, Christine Jade
dc.contributor.author	Ardestani, Goli
dc.contributor.author	Mundaca, Enrique A.
dc.contributor.author	Crisol-Martínez, Eduardo
dc.date.accessioned	2024-09-27T14:03:18Z
dc.date.available	2024-09-27T14:03:18Z
dc.date.issued	2024
dc.identifier.uri	http://repositorio.ucm.cl/handle/ucm/5675
dc.description.abstract	Several studies have reported higher damage from insect herbivores to hybrid compared to inbred (pure line) rice. We used a collection of 20 hybrid and 12 inbred genotypes from diverse origins to test the hypotheses that hybrid rice susceptibility is due to (a) the hybrid plant type and/or (b) rice phylogeny. We challenged the genotypes with Nilaparvata lugans (BPH), Sogatella furcifera (WBPH) and Scirpophaga incertulas (YSB) in greenhouse and screenhouse bioassays and monitored herbivores in field plots. We used single nucleotide polymorphic (SNP) markers to assess genetic similarities between the genotypes and found that the hybrids and inbreds formed two distinct clusters regardless of origin. In the screenhouse, hybrids were more susceptible than inbreds to YSB; however, resistant hybrids and susceptible inbreds were also apparent from both the screenhouse and field plots. Plant biomass was the best predictor of susceptibility to YSB. Plant origin had a greater effect than plant type on susceptibility to BPH and WBPH. WBPH was the most abundant planthopper in the field plots where numbers were highly correlated with planthopper fitness in the greenhouse bioassays. Our results provide evidence that high-yielding hybrids that are relatively resistant to herbivores can be achieved through careful breeding. The avoidance of susceptible genotypes during breeding should remain a key element of integrated rice pest management.	es_CL
dc.language.iso	en	es_CL
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 Chile	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/cl/	*
dc.source	Insects, 15(8), 608	es_CL
dc.subject	Brown planthopper	es_CL
dc.subject	Fertilizer	es_CL
dc.subject	Host plant resistance	es_CL
dc.subject	Rice breeding	es_CL
dc.subject	Rice herbivores	es_CL
dc.subject	Rice phylogeny	es_CL
dc.subject	Whitebacked planthopper	es_CL
dc.subject	Yellow stemborer	es_CL
dc.title	Origins of susceptibility to insect herbivores in high-yielding hybrid and inbred rice genotypes	es_CL
dc.type	Article	es_CL
dc.ucm.facultad	Facultad de Ciencias Agrarias y Forestales	es_CL
dc.ucm.indexacion	Scopus	es_CL
dc.ucm.indexacion	Isi	es_CL
dc.ucm.uri	mdpi.com/2075-4450/15/8/608	es_CL
dc.ucm.doi	doi.org/10.3390/insects15080608	es_CL