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Galarreta, José Ignacio Ruíz de; Álvarez, Ángel Carracedo

doi:10.1023/a:1012074606561

Cited by 27 publications

(4 citation statements)

References 10 publications

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“…Many tools are now available to study relationships among cultivars, including various types of molecular markers; however, morphological characterization is the first step in the description and classification of germplasm (Smith and Smith, 1989). Ruiz de Galarreta and Alvarez (2001) in a study of one hundred landraces of maize from Northern Spain on the basis of twenty-two morphological traits, and seventeen ecological variables associated with the collection site, the study reported that seven different groups were obtained from the cluster analysis using plant and cycle traits. Seven populations with promising breeding values were detected.…”

Section: Introductionmentioning

confidence: 99%

Morphological Classification of Maize (Zea mays L.) Genotypes in Heat Stress Condition

Khodarahmpour¹

2012

JAS

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This experiment was set up to understand genetic diversity in maize hybrids under heat stress condition. 30 morphological traits of 28 hybrids were studied in a randomized complete block design with three replications in 2010 at two planting dates, 6th July (to coincide heat stress with the pollination and grain filling periods) and 27 th July (normal) in Shoushtar City in the southern part of Iran. The results showed that the traits of grain filling period, plant growth period, rows per ear and grains per ear in the both conditions had positive and significant correlation with grain yield. Under heat stress condition however, the highest coefficient of phenotypic variation was obtained for grain yield, grains per ear, grains per row and ASI, and in normal condition for grain abortion percentage and ASI. Cluster analysis by Ward ' s minimum variance, clustered hybrids in to three groups for both conditions. Hybrids K18×K166B and K18×K47/2-2-1-21-2-1-1-1 in the second cluster from the heat stress condition and hybrids K18×K166B, K166A×K3640/5, K166A×K47/2-2-1-21-2-1-1-1 and K166A×K19 in second cluster from the normal condition were found to be the most suitable because they had higher values for grain yield and other desirable traits and lower grain abortion percentage, ASI and grain protein percentage. Therefore, in accordance with the cluster analysis these aforementioned hybrids would be the most suitable for cultivation under the studied conditions.

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Section: Introductionmentioning

confidence: 99%

Morphological Classification of Maize (Zea mays L.) Genotypes in Heat Stress Condition

Khodarahmpour¹

2012

JAS

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“…In recent years the genetic diversity of ex situ conserved European maize landraces has been extensively studied using genetic (Dubreuil and Charcosset 1999;Rebourg et al 1999Rebourg et al , 2003Rebourg et al , 2001Gauthier et al 2002;Gouesnard et al 2005;Reif et al 2005b;Camus-Kulandaivelu et al 2006;Dubreuil et al 2006) and morphologic descriptors (Brandolini and Brandolini 2001;de Galarreta and Alvarez 2001). Landraces from Switzerland and adjacent regions of Austria, however, were under-represented in the European maize collections (cf., Gauthier et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Genetic structure and history of Swiss maize (Zea mays L. ssp. mays) landraces

Eschholz

Stamp

Peter

et al. 2009

Genet Resour Crop Evol

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Between 1930 and 2003 with emphasis on the 1940s maize landraces (Zea mays L. ssp. mays) from all over Switzerland were collected for maintenance and further use in a new Swiss breeding program. The genetic relationship and diversity among these accessions stored in the Swiss gene bank is largely unknown. Our hypothesis was that due to the unique geographic, climatic, and cultural diversity in Switzerland a diverse population of maize landraces had developed over the past three centuries. The aims were to characterize the genetic diversity of the Swiss landraces and their genetic relationship with accessions from neighbouring regions as well as reviewing their history, collection, and maintenance. The characterization and grouping was based on analyses with ten microsatellite markers. Geographic, cultural, and climatic conditions explained a division in two distinct groups of accessions. One group consisted of landraces collected in the southern parts of Switzerland. This group was related to the Italian Orange Flints. The other group contained accessions from northern Switzerland which were related to Northern European Flints in particular German Flints. Historic evidence was found for a frequent exchange of landraces within the country resulting in a lack of regionspecific or landrace-specific genetic groups. The relatively large separation between the accessions, indicated by high F ST (0.42), might be explained partly by a bottleneck during the collection and maintenance phase as well as by geographical and cultural separation of north and south of the country. Due to the high genetic diversity, the accessions here are a potential resource for broadening the European flint pool.

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“…Cob length is related to number of grains per cob and the factors reducing number of grains per cob also reduced cob length. Cob length is an important yield factor that is positively related to grain yield and has high heritability (Ruiz de Galarreta and Alvarez, 2001;Lucchin et al, 2003). Additionally, cob length is also affected by genetic structure, environmental factors, cultivation techniques such as planting time, plant density and nitrogen dose.…”

Section: Grain Yield and Yield Components Of Cornmentioning

confidence: 99%

The determination of grain yield, yield components, and macro nutrient content of corn (Zea Mays L.) by different agricultural practices

Çerçioğlu

2023

EJSS

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A field experiment was conducted to determine the impacts of some treatments on grain yield, yield components (cob length, cob diameter, grain weight), and macro nutrient content of corn (Zea mays L.). During the study, tobacco waste compost (50 t ha-1), poultry manure (4 t ha-1), bio-humus (10 t ha-1) and NPK (0.3 t ha-1) were applied. The experiment was established with a randomized complete block design with four replications in Izmir, Türkiye. According to the two years average values; cob length varied from 18.84 to 22.35 cm, cob diameter from 4.38 to 5.05 cm, grain weight from 1704 to 2529 g, grain yield from 14.48 to 19.88 t ha-1 by the treatments. The greatest average yield values were obtained under tobacco waste compost (19.88 t ha-1) and poultry manure (19.64 t ha-1) plots over the control. All yield components were significantly affected the treatments. Macro nutrient contents of corn grain were found statistically significant by the treatments as compared with control. Total N, P, K, Ca, and Mg content of grain varied between 1.25-1.64%, 0.044-0.087%, 2103-3559 ppm, 25.83-571.88 ppm, 127.57-469.93 ppm, respectively. As a conclusion, all treatments increased the yield components and macro nutrient content of corn with similar effects; on the other hand, poultry manure and tobacco waste compost were the most effective materials on all parameters. Moreover, the positive and significant correlations were found among first and second year parameters.

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Cited by 27 publications

References 10 publications

Morphological Classification of Maize (Zea mays L.) Genotypes in Heat Stress Condition

Morphological Classification of Maize (Zea mays L.) Genotypes in Heat Stress Condition

Genetic structure and history of Swiss maize (Zea mays L. ssp. mays) landraces

The determination of grain yield, yield components, and macro nutrient content of corn (Zea Mays L.) by different agricultural practices

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