Evaluation of European maize (Zea mays L.) germplasm under cold conditions

Rodríguez, Víctor M.; Romay, M. Cinta; Ordás, A.; Revilla, Pedro

doi:10.1007/s10722-009-9529-9

Cited by 20 publications

(20 citation statements)

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“…Many studies have been conducted to identify maize germplasm with superior early growth, both in field and controlled environments. Significant genetic differences were found in tropical, North American, and European germplasm for early vigor (Hodges et al, 1997; Revilla et al, 2000, 2006; Rodríguez et al, 2007, 2010) and early growth rates (Donaldson and Blackman, 1973; Peter et al, 2009; Stehli et al, 1999; Verheul et al, 1996), but only few genotypes (6–17) were evaluated in these studies. However, the effect of improved early growth on final DMY or grain yield seems to depend on the germplasm under evaluation (Leipner et al, 2008).…”

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confidence: 99%

Genetic Variation among Inbred Lines and Testcrosses of Maize for Early Growth Parameters and Their Relationship to Final Dry Matter Yield

et al. 2012

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Reduced early growth of maize {Zea mays L.) might impair subsequent biomass accumulation, and, therefore, final whole-plant dry matter yield (DMY). Quantitative genetic studies on biomass growth rates and their relation to final DMY in large germplasm sets have been hampered so far by a lack of suitable phenotyping techniques. In this study, we took advantage of a recently developed nondestructive phenotyping platform to (i) determine early biomass and growth rates in a broad set of 285 dent inbred lines and their testcrosses with two flint testers grown at three locations in 2008 and 2009, based on nondestructive measurements of biomass between the four-and eight-leaf stage; (ii) estimate variance components and heritability for these traits; (iii) investigate the association of early growth with final DMY and other agronomic traits; and (iv) calculate correlations between line per se performance (LP) and general combining ability (GCA) for these traits. We observed significant genetic variance and high herltabilities for early growth traits, though masking variance components were larger than for agronomic traits. Early growth traits showed weak (GCA) to moderate (LP) correlations with final DMY. Correlations between LP and GCA were only moderate for early growth traits, most probably due to masking effects of the testers. Since correlations among early growth traits were tight, the simple visual scoring of early vigor is sufficient in selection of promising testcrosses.

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Genetic Variation among Inbred Lines and Testcrosses of Maize for Early Growth Parameters and Their Relationship to Final Dry Matter Yield

et al. 2012

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“…From the results, it became easy to understand the gene involved in stress response during seed maturity and germination. Rodríguez et al (2010) conducted a research on maize in temperate areas at cold temperature. Among 95 screened members of the population, 11 exhibited best germination vigour under cold condition.…”

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Cold Stress Evaluation among Maize (Zea mays L.) Inbred Lines in Different Temperature Conditions

Farooqi

Lee

2016

Plant Breed. Biotech.

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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. C).Data were recorded by measuring germination rate, index, root length, and seed vigour index values. Five higher and three lower tolerant inbred lines were shortlisted. The data were analyzed using analysis of variance, while mean values were compared using Tukey's Honest Significant Difference Test at =0.05 and at =0.01. Using Genstat software, correlation was done. A strong correlation (P＜0.05) was found between germination rate and germination index under all stress conditions. Root length and vigour index were also strongly correlated with germination rate under 5 o C stress condition and compared to 10 o C and 23 o C stress conditions. Our results suggested that five (CO439, CO438, CO450, CO435, and CO445) among 22 maize inbred lines performed better under 5 o C cold stress condition and thus had the potential to develop maize hybrids to increase grain yield under environmentally stressful conditions in South Korea.

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“…believed to be more tolerant to cold conditions because they are more adapted to northern latitudes than the Corn Belt dents. Rodríguez et al (2010) concluded that the European flints had some potential value for improving cold tolerance of maize. Other authors have found results supporting this conclusion because the flint kernel phenotype was associated with cold tolerance (Frascaroli and Landi, 2013).…”

Section: Evaluation Of Inbreds Per Se: Flints Vs Dentsmentioning

confidence: 99%

“…Breeders generally assume that European flints are more cold tolerant than Corn Belt dents, a belief that has been experimentally demonstrated to some extent (Frascaroli and Landi, 2013;Strigens et al, 2013). Several efforts for searching sources of cold tolerance have been performed in limited collections of European germplasm (Lee et al, 2002;Mosely et al, 1984;Revilla et al, 2000;Rodríguez et al, 2010;Semuguruka et al, 1981;Verheul et al, 1996). Given that most previous reports have faced the problem by using limited resources, we believe that a global evaluation of large collections of genotypes for cold tolerance is still lacking.…”

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“…The main handicap for breeding programs intending to improve cold tolerance in maize has been the narrow genetic base for this trait (Greaves, 1996;Revilla et al, 2005). Rodríguez et al (2010) evaluated for cold tolerance the largest collection of germplasm so far published, the European Union Maize Landrace Core Collection (EUMLCC). Their results were not encouraging because most cold-tolerant populations from the EUMLCC were not more cold tolerant than the checks.…”

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Cold Tolerance in Two Large Maize Inbred Panels Adapted to European Climates

et al. 2014

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Maize (Zea mays L.) for northern growing areas requires cold tolerance for extending the 2 vegetative period. Our objectives were to evaluate two large panels of maize inbred lines 3 adapted to Europe for cold tolerance and to estimate the effects of cold-related traits on 4 biomass production. Two inbred panels were evaluated for cold tolerance per se and in 5 testcrosses under cold and control conditions in a growth chamber and under field 6 conditions. Comparisons of inbreds and groups of inbreds were made taking into account 7 the SNP-based genetic structure of the panels, and the factors affecting biomass 8 production were studied. Eight flint and one dent inbreds with diverse origins were the 9 most cold tolerant. The most cold tolerant dent and flint groups were the Iodent Ph207 10 and the Northern Flint D171 groups, respectively. The relationships between inbred per se 11 and testcross performance and between controlled and field conditions were low. 12Regressions with dry matter yield in the field as dependent variable identified plant height combining ability, as well as between both groups and the Northern Flint D171 group. 20Key words: maize, cold tolerance, abiotic stress, germplasm. period that can potentially increase yield and stability, and the probability of escaping 8 summer drought stress (Kucharik, 2006). This is particularly true in some temperate areas, 9 where springs are cold and rainy and summers are hot and dry. But early sowing in 10 temperate areas requires cold tolerance and, consequently, the interest of breeders in cold 11 tolerance is increasing (Darkó et al., 2011; Frascaroli and Landi, 2013; Revilla et al., 2005; 12 Strigens et al., 2012 12 Strigens et al., , 2013. In the northwest of Spain, a breeding goal would be to advance 13 maize sowing two weeks, i.e. from May to mid April, because there are no late frosts. 14 However, in northern areas the gain could be just a few days. 15The main handicap for breeding programs intending to improve cold tolerance in 16 maize has been the narrow genetic base for this trait (Greaves, 1996; Revilla et al., 2005). were not more cold tolerant than the checks. Actually, they were similar to the improved 21 populations and checks already known, including commercial checks and the best cold explaining between 5.7 and 52.5% of the phenotypic variance for early growth and 10 chlorophyll fluorescence. They propose the use of whole genome prediction approaches 11 rather than classical marker assisted selection to improve the chilling tolerance of maize. 12Other major obstacles for breeders are that cold tolerance has large experimental 13 errors, a strong genotype by environment interaction, and a complex genetic regulation 14 (Revilla et al., 2000, Strigens et al., 2013. Moreover, evaluations for cold tolerance are not 15 accurate enough for a precise discrimination of cold tolerance. This is due to two facts. , 1981;Verheul et al., 1996). Given that most previous reports have faced 16 the problem by using limited resources, we belie...

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Evaluation of European maize (Zea mays L.) germplasm under cold conditions

Cited by 20 publications

References 18 publications

Genetic Variation among Inbred Lines and Testcrosses of Maize for Early Growth Parameters and Their Relationship to Final Dry Matter Yield

Genetic Variation among Inbred Lines and Testcrosses of Maize for Early Growth Parameters and Their Relationship to Final Dry Matter Yield

Cold Stress Evaluation among Maize (Zea mays L.) Inbred Lines in Different Temperature Conditions

Cold Tolerance in Two Large Maize Inbred Panels Adapted to European Climates

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