Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia

In spite of the importance of quality protein maize to alleviate protein deficiency, almost all maize varieties cultivated in Ethiopia are normal maize varieties, which are devoid of lysine and tryptophan. Perusing the combining ability of QPM inbred for grain yield and its components is vital to de...

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Autores principales:	Lemi Mideksa Yadesa, Sentayehu Alamerew, Berhanu Tadesse
Formato:	article
Lenguaje:	EN ID
Publicado:	Fakultas Pertanian, Universitas Panji Sakti 2021
Materias:	combining ability gca effect line by testers sca effect quality protein maize Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/c6e05765b1054738b0055b4c344f7e13
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spelling	oai:doaj.org-article:c6e05765b1054738b0055b4c344f7e132021-11-06T16:47:14ZCombining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia2655-853X10.37637/ab.v4i3.733https://doaj.org/article/c6e05765b1054738b0055b4c344f7e132021-11-01T00:00:00Zhttps://ejournal.unipas.ac.id/index.php/Agro/article/view/733https://doaj.org/toc/2655-853XIn spite of the importance of quality protein maize to alleviate protein deficiency, almost all maize varieties cultivated in Ethiopia are normal maize varieties, which are devoid of lysine and tryptophan. Perusing the combining ability of QPM inbred for grain yield and its components is vital to design appropriate breeding strategies for the development of nutritionally enhanced maize cultivars. A line x tester analysis involving 36 crosses generated by crossing 9 elite maize inbred lines with 4 testers were evaluated for different desirable agronomic traits during the 2019 main season at BNMRC and JARC. The experiment was conducted using alpha lattice design with 3 replications. The objectives were to determine the combining ability of quality protein maize inbred lines, adapted to mid altitude agroecology of Ethiopia for agronomic traits. The crosses were evaluated in alpha lattice design replicated 3 times. Analyses of variances showed significant mean squares due to crosses for almost all the traits studied. GCA mean squares due to lines and testers were significant (P<0.05 or P<0.01) for most studied traits. SCA mean squares were also significant for most attributes across locations. The comparative importance of GCA and SCA variances observed in the current study for most studied traits indicated the preponderance of additive genetic variance in governing these attributes. Only L3 was the best general combiner for grain yield. Inbred line L3, for days to anthesis and L5 for days to silking had negative and significant GCA effects. L5 and L6 displayed negative and significant GCA effects for plant and ear height. Crosses, L2xT4, L3xT4, L4xT4, L5xT2, L6xT3, L7xT2, L9xT1 and L9xT4 were good specific combiners for grain yield. In general, these genotypes help as a source of promising alleles that could be used for forthcoming breeding work in the development of quality protein maize cultivars with desirable traits.Lemi Mideksa YadesaSentayehu AlamerewBerhanu TadesseFakultas Pertanian, Universitas Panji Saktiarticlecombining abilitygca effectline by testerssca effectquality protein maizeAgriculture (General)S1-972ENIDAgro Bali: Agricultural Journal, Vol 4, Iss 3, Pp 286-304 (2021)
institution	DOAJ
collection	DOAJ
language	EN ID
topic	combining ability gca effect line by testers sca effect quality protein maize Agriculture (General) S1-972
spellingShingle	combining ability gca effect line by testers sca effect quality protein maize Agriculture (General) S1-972 Lemi Mideksa Yadesa Sentayehu Alamerew Berhanu Tadesse Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
description	In spite of the importance of quality protein maize to alleviate protein deficiency, almost all maize varieties cultivated in Ethiopia are normal maize varieties, which are devoid of lysine and tryptophan. Perusing the combining ability of QPM inbred for grain yield and its components is vital to design appropriate breeding strategies for the development of nutritionally enhanced maize cultivars. A line x tester analysis involving 36 crosses generated by crossing 9 elite maize inbred lines with 4 testers were evaluated for different desirable agronomic traits during the 2019 main season at BNMRC and JARC. The experiment was conducted using alpha lattice design with 3 replications. The objectives were to determine the combining ability of quality protein maize inbred lines, adapted to mid altitude agroecology of Ethiopia for agronomic traits. The crosses were evaluated in alpha lattice design replicated 3 times. Analyses of variances showed significant mean squares due to crosses for almost all the traits studied. GCA mean squares due to lines and testers were significant (P<0.05 or P<0.01) for most studied traits. SCA mean squares were also significant for most attributes across locations. The comparative importance of GCA and SCA variances observed in the current study for most studied traits indicated the preponderance of additive genetic variance in governing these attributes. Only L3 was the best general combiner for grain yield. Inbred line L3, for days to anthesis and L5 for days to silking had negative and significant GCA effects. L5 and L6 displayed negative and significant GCA effects for plant and ear height. Crosses, L2xT4, L3xT4, L4xT4, L5xT2, L6xT3, L7xT2, L9xT1 and L9xT4 were good specific combiners for grain yield. In general, these genotypes help as a source of promising alleles that could be used for forthcoming breeding work in the development of quality protein maize cultivars with desirable traits.
format	article
author	Lemi Mideksa Yadesa Sentayehu Alamerew Berhanu Tadesse
author_facet	Lemi Mideksa Yadesa Sentayehu Alamerew Berhanu Tadesse
author_sort	Lemi Mideksa Yadesa
title	Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
title_short	Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
title_full	Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
title_fullStr	Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
title_full_unstemmed	Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia
title_sort	combining ability study for grain yield and agronomic traits of quality protein maize (zea mays l.) inbred lines adapted to mid-altitude agroecology of ethiopia
publisher	Fakultas Pertanian, Universitas Panji Sakti
publishDate	2021
url	https://doaj.org/article/c6e05765b1054738b0055b4c344f7e13
work_keys_str_mv	AT lemimideksayadesa combiningabilitystudyforgrainyieldandagronomictraitsofqualityproteinmaizezeamayslinbredlinesadaptedtomidaltitudeagroecologyofethiopia AT sentayehualamerew combiningabilitystudyforgrainyieldandagronomictraitsofqualityproteinmaizezeamayslinbredlinesadaptedtomidaltitudeagroecologyofethiopia AT berhanutadesse combiningabilitystudyforgrainyieldandagronomictraitsofqualityproteinmaizezeamayslinbredlinesadaptedtomidaltitudeagroecologyofethiopia
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Combining Ability Study for Grain Yield and Agronomic Traits of Quality Protein Maize (Zea mays L.) Inbred Lines Adapted to Mid-Altitude Agroecology of Ethiopia

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