Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment

Abstract. Makore F, Gasura E, Souta C, Mazamura U, Derera J, Zikhali M, Kamutando CN, Magorokosho C, Dari S. 2021. Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment. Biodiversitas 22: 769-777. The study was conduc...

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Autores principales:	Fortunate Makore, Edmore Gasura, Caleb Souta, Upenyu Mazarura, John Derera, Meluleki Zikhali, Casper Kamutando, Cosmos Magorokosho, Shorai Dari
Formato:	article
Lenguaje:	EN
Publicado:	MBI & UNS Solo 2021
Materias:	genetic diversity, heterotic group, maize landraces, population structure, private alleles Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/c4ef54adbc3146b6945bd58d73b83e92
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spelling	oai:doaj.org-article:c4ef54adbc3146b6945bd58d73b83e922021-11-22T00:54:56ZMolecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment1412-033X2085-472210.13057/biodiv/d220230https://doaj.org/article/c4ef54adbc3146b6945bd58d73b83e922021-01-01T00:00:00Zhttps://smujo.id/biodiv/article/view/7374https://doaj.org/toc/1412-033Xhttps://doaj.org/toc/2085-4722Abstract. Makore F, Gasura E, Souta C, Mazamura U, Derera J, Zikhali M, Kamutando CN, Magorokosho C, Dari S. 2021. Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment. Biodiversitas 22: 769-777. The study was conducted to assess genetic diversity of 372 maize lines using 116 single nucleotide polymorphism (SNP) markers. Three hundred and forty-seven lines were S1 lines (coded J lines) from a local maize landrace population and twenty-five were the widely used standard lines. The number of alleles per marker ranged from two to four and the average was three alleles. The average polymorphic information content (PIC) value of 0.405 indicates high genetic diversity for maize lines evaluated in this study. Population structure revealed three distinct sub-populations. Sub-population 1 contained two J lines; sub-population 2 contained five J lines and sub-population 3 contained the rest of the J lines and all the standard lines. Analysis of molecular variance (AMOVA) identified 22% variance among and 78% variance within the three subpopulations, indicating high gene exchange and low genetic differentiation. Hierarchical cluster analysis further divided the lines into nine subgroups placing some of the J lines into known heterotic groups', i.e., J30_3, J393_4, J393_3, and J393_1 in CIMMYT heterotic group B. Allelic variation observed can be a source of allele combination for breeding programs interested in widening their genetic base. The private alleles that were present in the J lines suggest availability of stress-tolerant genes that breeders can incorporate in new hybrids.Fortunate MakoreEdmore GasuraCaleb SoutaUpenyu MazaruraJohn DereraMeluleki ZikhaliCasper KamutandoCosmos MagorokoshoShorai DariMBI & UNS Soloarticlegenetic diversity, heterotic group, maize landraces, population structure, private allelesBiology (General)QH301-705.5ENBiodiversitas, Vol 22, Iss 2 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	genetic diversity, heterotic group, maize landraces, population structure, private alleles Biology (General) QH301-705.5
spellingShingle	genetic diversity, heterotic group, maize landraces, population structure, private alleles Biology (General) QH301-705.5 Fortunate Makore Edmore Gasura Caleb Souta Upenyu Mazarura John Derera Meluleki Zikhali Casper Kamutando Cosmos Magorokosho Shorai Dari Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
description	Abstract. Makore F, Gasura E, Souta C, Mazamura U, Derera J, Zikhali M, Kamutando CN, Magorokosho C, Dari S. 2021. Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment. Biodiversitas 22: 769-777. The study was conducted to assess genetic diversity of 372 maize lines using 116 single nucleotide polymorphism (SNP) markers. Three hundred and forty-seven lines were S1 lines (coded J lines) from a local maize landrace population and twenty-five were the widely used standard lines. The number of alleles per marker ranged from two to four and the average was three alleles. The average polymorphic information content (PIC) value of 0.405 indicates high genetic diversity for maize lines evaluated in this study. Population structure revealed three distinct sub-populations. Sub-population 1 contained two J lines; sub-population 2 contained five J lines and sub-population 3 contained the rest of the J lines and all the standard lines. Analysis of molecular variance (AMOVA) identified 22% variance among and 78% variance within the three subpopulations, indicating high gene exchange and low genetic differentiation. Hierarchical cluster analysis further divided the lines into nine subgroups placing some of the J lines into known heterotic groups', i.e., J30_3, J393_4, J393_3, and J393_1 in CIMMYT heterotic group B. Allelic variation observed can be a source of allele combination for breeding programs interested in widening their genetic base. The private alleles that were present in the J lines suggest availability of stress-tolerant genes that breeders can incorporate in new hybrids.
format	article
author	Fortunate Makore Edmore Gasura Caleb Souta Upenyu Mazarura John Derera Meluleki Zikhali Casper Kamutando Cosmos Magorokosho Shorai Dari
author_facet	Fortunate Makore Edmore Gasura Caleb Souta Upenyu Mazarura John Derera Meluleki Zikhali Casper Kamutando Cosmos Magorokosho Shorai Dari
author_sort	Fortunate Makore
title	Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
title_short	Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
title_full	Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
title_fullStr	Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
title_full_unstemmed	Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
title_sort	molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment
publisher	MBI & UNS Solo
publishDate	2021
url	https://doaj.org/article/c4ef54adbc3146b6945bd58d73b83e92
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Molecular characterization of a farmer-preferred maize landrace population from a multiple-stress-prone subtropical lowland environment

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