Diallel analysis of tropical and temperate sweet and supersweet corn inbred lines

Suzukawa, Andréia Kazumi; Pereira, Carolina Bertuzzi; Garcia, Mayara Mariana; Contreras‐Soto, Rodrigo Iván; Zeffa, Douglas Mariani; Coan, Marlon Mathias Dacal; Scapim, Carlos Alberto

doi:10.5935/1806-6690.20180069

Cited by 6 publications

(4 citation statements)

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“…They also identified some promising combinations. Suzukawa et al [7] investigated general and specific combining ability for grain yield and soluble solid contents of seven lines of sweet corn (su1) and eight supersweet (shrunken2) corn lines adapted to Brazil and identified some potential parents for commercial sweet corn hybrids.…”

Section: Genetic Basis Of Modern Sweet Cornmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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Modern sweet corn is distinguished from other vegetable corns by the presence of one or more recessive alleles within the maize endosperm starch synthesis pathway. This results in reduced starch content and increased sugar concentration when consumed fresh. Fresh sweet corn originated in the USA and has since been introduced in countries around the World with increasing popularity as a favored vegetable choice. Several reviews have been published recently on endosperm genetics, breeding, and physiology that focus on the basic biology and uses in the US. However, new questions concerning sustainability, environmental care, and climate change, along with the introduction of sweet corn in other countries have produced a variety of new uses and research activities. This review is a summary of the sweet corn research published during the five years preceding 2021.

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Section: Genetic Basis Of Modern Sweet Cornmentioning

confidence: 99%

Sweet Corn Research around the World 2015–2020

2021

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“…Entretanto, a utilização de variedades, de menor custo de semente, pode ser economicamente vantajosa para semeadura em segunda safra. Enquanto por outro lado, a utilização de milhos especiais, voltados para nichos de mercado, como por exemplo: Milhos com maiores pontos em bromatológica voltado para silagem, milhos adaptados a região subtropical, pode representar uma estratégia para obtenção de maior sustentabilidade econômica na atividade (Passos et al, 2018;Suzukawa et al, 2018).…”

Section: Introductionunclassified

Viabilidade econômica no cultivo de diferentes genótipos de milho em segunda safra

Ecco

Finkler²,

Reis³

2023

RSD

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O potencial produtivo do milho está relacionado ao genótipo, que é responsável por parte do rendimento final devido ao potencial genético, tendo relação direta perante condições edafoclimáticas de cada local e o manejo adotado. Desta forma, objetivo do trabalho foi avaliar a viabilidade econômica de genótipos de milho segunda safra em sistema de semeadura direta na região Oeste do Paraná. O experimento foi instalado em delineamento de blocos casualizados com sete genótipos de milho, sendo; híbrido simples, híbrido simples modificado, híbrido duplo, híbrido triplo, variedade, milho crioulo, material caseiro 1 e material caseiro 2 com quatro repetições em espaçamento de 0,45 m. Foram avaliados os componentes de produção da cultura, com exceção da massa de mil grãos. Posteriormente os dados foram submetidos a análise de variância pelo teste F e posteriormente as médias foram submetidas a comparação utilizando o teste de Tukey, pelo software SISVAR. Houve diferenças entre os tratamentos apenas em duas variáveis, onde os materiais de maior variabilidade genética obtiveram maior comprimento de espiga, entretanto, maior falha de formação de grãos na extremidade apical da espiga. Apesar de não haver diferença estatística entre os tratamentos para a produtividade final, pela estimativa realizada, verifica-se a importância de se utilizar materiais certificados e de evolução quanto ao melhoramento genético, onde o uso do híbrido triplo, pode ser mais vantajoso ao produtor rural nesta época de cultivo com base no custo de obtenção do genótipo e por obterem a mesma produtividade.

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“…The analysis of data generated from the mating project can be used to explain the nature of the genetic control of the trait, as well as to help the breeder compose the basic population for the development of new cultivars (Acquaah 2012). Among the mating projects, diallel cross design (Griffing 1956a, b) is used quite commonly in sweet corn breeding (Ozlem et al 2013;Teixeira et al 2014;Suzukawa et al 2018). The estimated general combining ability (GCA) and specific combining ability (SCA) generated from the diallel analysis serve as a measure for the roles of additive and non-additive gene actiondomination and epistasis, respectively (Sprague & Tatum 1942).…”

Section: Introductionmentioning

confidence: 99%

Combining Ability Analysis of Ear Characteristics of Sweet Corn Hybrids Suitable for Organic Crop Production

Chozin

Sudjatmiko

2019

Journal of Horticultural Research

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Good knowledge of genetic merits governing the inheritance of economic traits is of paramount importance to plant breeders for crop improvement. Objectives of the study were to investigate the genetic nature of ear traits in sweet corn (Zea mays convar. saccharata var. rugosa) based on the general and specific combining ability (GCA and SCA) analysis, and to determine the breeding potential of eight promising inbred lines for the development of new hybrid cultivars well suited for organic production. Thirty-six genotypes (hybrid families) derived from a half diallel cross design were grown under organic crop management at three agro-ecological zones of the tropics. Although the genotypes varied significantly for all the observed ear traits, some of them showed clear inconsistencies in performing husked ear size (length, diameter, and weight), kernel row number, and kernel number per row across environments. The combining ability analysis showed that additive gene action was more preponderance than non-additive gene actions in governing the inheritance of the studied ear traits. The inbred lines: Caps 5, Caps 17A, Caps 17B, and Caps 22 showed their potential as good partners for the improvement of ear performances as to the development of superior sweet corn cultivars for organic production.

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Diallel analysis of tropical and temperate sweet and supersweet corn inbred lines

Cited by 6 publications

References 0 publications

Sweet Corn Research around the World 2015–2020

Sweet Corn Research around the World 2015–2020

Viabilidade econômica no cultivo de diferentes genótipos de milho em segunda safra

Combining Ability Analysis of Ear Characteristics of Sweet Corn Hybrids Suitable for Organic Crop Production

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