Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.

A desirable tester that elicits greater genetic difference in Striga resistance among test crosses in a breeding program has not been reported. Therefore, this study was conducted to characterize 30 Striga resistant yellow endosperm maize inbred lines and three testers with varying resistance levels...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Degife Zebire, Abebe Menkir, Victor Adetimirin, Wende Mengesha, Silvestro Meseka, Melaku Gedil
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/7c02211b1fb3498fa33011329a46f856
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7c02211b1fb3498fa33011329a46f856
record_format	dspace
spelling	oai:doaj.org-article:7c02211b1fb3498fa33011329a46f8562021-12-02T20:10:22ZIdentifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.1932-620310.1371/journal.pone.0253481https://doaj.org/article/7c02211b1fb3498fa33011329a46f8562021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0253481https://doaj.org/toc/1932-6203A desirable tester that elicits greater genetic difference in Striga resistance among test crosses in a breeding program has not been reported. Therefore, this study was conducted to characterize 30 Striga resistant yellow endosperm maize inbred lines and three testers with varying resistance levels to Striga using DArTseq SNP markers and agronomic traits to identify a suitable tester for resistance hybrid breeding. Marker-based and agronomic trait-based genetic distances were estimated for yellow endosperm maize inbred lines and testers with varying resistance levels to Striga. The Marker-based cluster analysis separated the Striga resistant lines and testers into two distinct groups. Although the susceptible tester (T3) was the most distantly related to the 30 Striga resistant inbred lines, it exhibited a narrower range in genetic distance estimates and poor agronomic performance under Striga infestation in crosses with the resistant lines. In contrast, the resistant tester (T2) showed a broader range in genetic distance estimates in pairs with the 30 resistant lines. Also, it formed many high yielding hybrids with desirable traits under parasite pressure. Furthermore, the most significant positive association between agronomic trait-based and marker-based distance estimates (r = 0.389, P = 0.01) was observed when T2 has paired with the Striga resistant maize inbred lines. It thus appears that T2 may be used as a suitable tester to determine the breeding value of lines in hybrid maize resistance breeding programs. T2 was the most suitable tester, with a tolerant tester (T1) as an alternative tester to characterize the combining ability of Striga resistant maize inbred lines. This result can also encourage other breeders to investigate testers relative discriminating ability with varying levels of resistance in hybrid breeding for resistance to diseases, pests, and other parasitic plants.Degife ZebireAbebe MenkirVictor AdetimirinWende MengeshaSilvestro MesekaMelaku GedilPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0253481 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Degife Zebire Abebe Menkir Victor Adetimirin Wende Mengesha Silvestro Meseka Melaku Gedil Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
description	A desirable tester that elicits greater genetic difference in Striga resistance among test crosses in a breeding program has not been reported. Therefore, this study was conducted to characterize 30 Striga resistant yellow endosperm maize inbred lines and three testers with varying resistance levels to Striga using DArTseq SNP markers and agronomic traits to identify a suitable tester for resistance hybrid breeding. Marker-based and agronomic trait-based genetic distances were estimated for yellow endosperm maize inbred lines and testers with varying resistance levels to Striga. The Marker-based cluster analysis separated the Striga resistant lines and testers into two distinct groups. Although the susceptible tester (T3) was the most distantly related to the 30 Striga resistant inbred lines, it exhibited a narrower range in genetic distance estimates and poor agronomic performance under Striga infestation in crosses with the resistant lines. In contrast, the resistant tester (T2) showed a broader range in genetic distance estimates in pairs with the 30 resistant lines. Also, it formed many high yielding hybrids with desirable traits under parasite pressure. Furthermore, the most significant positive association between agronomic trait-based and marker-based distance estimates (r = 0.389, P = 0.01) was observed when T2 has paired with the Striga resistant maize inbred lines. It thus appears that T2 may be used as a suitable tester to determine the breeding value of lines in hybrid maize resistance breeding programs. T2 was the most suitable tester, with a tolerant tester (T1) as an alternative tester to characterize the combining ability of Striga resistant maize inbred lines. This result can also encourage other breeders to investigate testers relative discriminating ability with varying levels of resistance in hybrid breeding for resistance to diseases, pests, and other parasitic plants.
format	article
author	Degife Zebire Abebe Menkir Victor Adetimirin Wende Mengesha Silvestro Meseka Melaku Gedil
author_facet	Degife Zebire Abebe Menkir Victor Adetimirin Wende Mengesha Silvestro Meseka Melaku Gedil
author_sort	Degife Zebire
title	Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
title_short	Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
title_full	Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
title_fullStr	Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
title_full_unstemmed	Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.
title_sort	identifying suitable tester for evaluating striga resistant lines using dartseq markers and agronomic traits.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/7c02211b1fb3498fa33011329a46f856
work_keys_str_mv	AT degifezebire identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits AT abebemenkir identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits AT victoradetimirin identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits AT wendemengesha identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits AT silvestromeseka identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits AT melakugedil identifyingsuitabletesterforevaluatingstrigaresistantlinesusingdartseqmarkersandagronomictraits
_version_	1718375008454049792

Identifying suitable tester for evaluating Striga resistant lines using DArTseq markers and agronomic traits.

Ejemplares similares