2007
DOI: 10.1139/g07-018
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The genetic relationship among plant-height traits found using multiple-trait QTL mapping of a dent corn and popcorn cross

Abstract: Plant height (PH) is one of the most important traits in maize breeding programs. In popcorn, inferior plant traits can be improved with the dent/flint corn germplasm. In the current study, a total of 259 F2:3 families, developed from a cross between a dent corn inbred and a popcorn inbred, were evaluated for 4 PH traits. Quantitative trait loci (QTLs) for each trait were detected using composite interval mapping methods. In addition, genetic interrelationships were investigated using multiple-trait joint anal… Show more

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Cited by 33 publications
(32 citation statements)
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References 40 publications
(50 reference statements)
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“…Spike insertion height (Table 4) is closely related to losses in mechanic harvest, therefore, uniformity of this trait is essential for an efficient mechanic harvest. Li et al (2007) affirm that high values of spike insertion height strongly contribute for lodging in maize field. In the environment of Campos Borges-RS, the hybrid 2B339Hx ® was superior to the others, however, in the growing environment of Salto do Jacuí-RS, the superior genotypes were DKB566VTPRO ® , 2A55Hx ® and 2B688Hx ® .…”
Section: Resultssupporting
confidence: 63%
“…Spike insertion height (Table 4) is closely related to losses in mechanic harvest, therefore, uniformity of this trait is essential for an efficient mechanic harvest. Li et al (2007) affirm that high values of spike insertion height strongly contribute for lodging in maize field. In the environment of Campos Borges-RS, the hybrid 2B339Hx ® was superior to the others, however, in the growing environment of Salto do Jacuí-RS, the superior genotypes were DKB566VTPRO ® , 2A55Hx ® and 2B688Hx ® .…”
Section: Resultssupporting
confidence: 63%
“…Li et al (2007), plantas mais altas e com maior altura de inserção de espiga são mais suscetíveis ao acamamento. Porém, neste estudo não foi observado acamamento de plantas mesmo nos híbridos de grande porte, sugerindo que outros fatores que contribuem para a predisposição ao acamamento não se manifestaram.…”
Section: O Primeiro Fator Analisado Separadamente Foi Híbri-dos (Tabeunclassified
“…A importância dessa espécie como infestante de culturas agrícolas baseiase em características ecológicas relacionadas aos mecanismos de reprodução, distribuição generalizada e dificuldade de controle (HOLM et al, 1991). É uma planta daninha perene, que se multiplica rapidamente por meio de rizomas, bulbos ou de uma extensa rede de tubérculos subterrâneos com forte dominância apical (NELSON; RENNER, 2002;WEBSTER et al, 2008).…”
unclassified
“…Esse efeito pode ter influenciado diretamente no aumento da altura da espiga. Essas características não são desejadas, pois estão diretamente relacionadas com a tolerância ao acamamento do milho (LI et al, 2007). Isso ocorre porque a alta relação inserção/estatura pode diminuir o centro de gravidade da planta, provocando o acamamento.…”
unclassified