2004
DOI: 10.2135/cropsci2004.1997
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Combining Abilities of Quality Protein Maize Inbreds

Abstract: content in maize alone can add an estimated annual gross value of $360 million per year and can go up to Development and adoption of quality protein maize (Zea mays $480 million per year if protein also is increased (John-L.) (QPM) would increase the nutritional value of food and feed son et al., 2001). maize products. Breeding programs at the International Center for The CIMMYT has developed QPM that has im-Maize and Wheat Improvement, Mexico (CIMMYT); Texas A&M University (TAMU); and University of Natal, Sou… Show more

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Cited by 78 publications
(80 citation statements)
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“…The QPM inbred lines used in this study were developed from conversion of a variety of mid-altitude normal endosperm inbred lines and OPVs to QPM and this explained the observed large genetic variability for various traits. This result is consistent with reports of genetic variability in tropical and temperate QPM germplasm (Spaner et al 1992;Vasal et al 1993a;Pixley and Bjarnason 1993;Bhatnagar et al 2004;Musila et al 2010;BaduApraku and Lum 2010;Badu-Apraku et al 2016) and in opaque-2 types (Motto et al 1978;Wessel-Beaver et al 1985).…”
Section: Discussionsupporting
confidence: 92%
See 1 more Smart Citation
“…The QPM inbred lines used in this study were developed from conversion of a variety of mid-altitude normal endosperm inbred lines and OPVs to QPM and this explained the observed large genetic variability for various traits. This result is consistent with reports of genetic variability in tropical and temperate QPM germplasm (Spaner et al 1992;Vasal et al 1993a;Pixley and Bjarnason 1993;Bhatnagar et al 2004;Musila et al 2010;BaduApraku and Lum 2010;Badu-Apraku et al 2016) and in opaque-2 types (Motto et al 1978;Wessel-Beaver et al 1985).…”
Section: Discussionsupporting
confidence: 92%
“…This result is consistent with findings in several studies with QPM germplasm (Pixley and Bjarnason 1993;Vasal et al 1993a, b;Musila et al 2010;Wegary et al 2014). In contrast, studies by Bhatnagar et al (2004) and Machida et al (2010) showed that nonadditive genetic effects were more important than additive genetic effects for control of GY in QPM germplasm. With preponderance of additive gene action for these traits and large genetic variability, a recurrent selection method like half-sib family recurrent selection that emphasizes GCA can be used effectively to improve these traits in this germplasm.…”
Section: Discussionsupporting
confidence: 92%
“…The result is in close agreement with Bhatnagar et al (2004), Hossain and Prasanna (2008) and Amiruzzaman et al (2011) who reported the importance of both additive and nonadditive genetic variances with higher magnitude of SCA over GCA for yield-related characters of QPM in their study. …”
Section: Resultssupporting
confidence: 91%
“…It is therefore expedient to assess the parental inbred lines with different testers to be able to identify superior hybrids since the performance of the hybrids cannot be based on GCA alone (Hallauer and Miranda, 1988). This result agrees with Bhatnagar et al (2004). In contrast, Sibiya et al (2013) found out that additive gene effect was more predominant in controlling grain yield.…”
Section: Analysis Of Variance For Msvd Severity Mean Score and Grain supporting
confidence: 85%