Effect of One- and Two-Eared Selection on Stalk Strength and Other Characters in Maize

Jampatong, Sansern; Darrah, L. L.; Krause, G. F.; Barry, Boubacar

doi:10.2135/cropsci2000.403605x

Cited by 28 publications

(28 citation statements)

References 22 publications

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“…3) with 7% stalk lodging at the current Wisconsin recommendation of 74100 plants ha 21 . This study confirmed other reports where an increase in stalk lodging was observed with plant population increases (Moentono et al, 1984;Thomison and Jordan, 1995;Jampatong et al, 2000;Pedersen and Lauer, 2002;Bruns and Abbas, 2005;Stanger and Lauer, 2006). Significant trait 3 location and trait 3 zone interactions were also observed for stalk lodging (Table 4).…”

supporting

confidence: 91%

“…2). Similarly, Jampatong et al (2000) observed that RPR decreased 8% with increasing plant populations. Overall, RPR at the current Wisconsin recommendation of 74 100 plants ha 21 averaged 3.9 load-kg plant…”

Section: Rind Penetrometer Resistance and Stalk Lodgingmentioning

confidence: 82%

“…Chesang-Chumo (1993) showed that RPR measurements were highly correlated with stalk lodging resistance, and there was a proportional decrease in stalk lodging with high RPR. Jampatong et al (2000) and Martin et al (2004) reported that stalk lodging percentage was negatively correlated with RPR. Martin et al (2004) indicated that selection for RPR can significantly affect stalk lodging percentage, increasing or decreasing its occurrence.…”

mentioning

confidence: 99%

“…Lodging can increase significantly with high plant populations (Moentono et al, 1984;Thomison and Jordan, 1995;Jampatong et al, 2000;Pedersen and Lauer, 2002;Bruns and Abbas, 2005;Stanger and Lauer, 2006). Greater lodging at high plant populations may result in heavy harvest losses that eliminate any yield increase that may have occurred with the higher plant population (Olson and Sander, 1988).…”

mentioning

confidence: 99%

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Corn Stalk Response to Plant Population and the Bt–European Corn Borer Trait

Stanger

Lauer

2007

Agronomy Journal

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Current research indicates that plant populations should increase above the current Wisconsin recommendation of 74 100 plants ha 21 for higher corn (Zea mays L.) grain yields. However, stalk lodging is a major constraint to increasing plant populations. One option growers have is using Bt (Bacillus thuringiensis) hybrids, which are known to lodge less. A new method for assessing stalk lodging risk is needed. The objectives of this study were to (i) assess rind strength of corn hybrids with or without the Bt trait to increasing plant populations at natural levels of European Corn Borer [ECB, Ostrinia nubilalis (Hü bner)], and (ii) determine the potential of rind strength measurements for predicting stalk lodging. In 2003 and 2004, rind penetrometer resistance (RPR) was used to measure rind strength for four Bt and five non-Bt hybrids with plant populations ranging from 64 220 to 123 500 plants ha 21 at 10 locations in Wisconsin. Stalk lodging increased from 6 to 18% as plant population increased, and only at one location, Arlington, did Bt hybrids lodge significantly less (20 vs. 42%) than non-Bt hybrids. The RPR of both Bt and non-Bt hybrids decreased from 3.9 to 3.7 load-kg plant 21 with increasing plant population. Plants with rind strength measurements , 3.9 load-kg plant 21 taken at physiological maturity showed more lodging. Thus, such measurements appear to be a good indicator of stalk lodging potential in a high plant population situation. This new method has potential to help growers prepare for grain harvest by identifying fields with plants having average RPR below a 3.9 load-kg plant 21 threshold, and adjusting harvest schedules of suspect fields earlier to avoid yield losses caused by stalk lodging. Further research using more hybrids across a range of environmental conditions and plant populations will be necessary to fully understand the importance of this tool and its potential importance in understanding and identifying high lodging potential environments.

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supporting

confidence: 91%

Section: Rind Penetrometer Resistance and Stalk Lodgingmentioning

confidence: 82%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Corn Stalk Response to Plant Population and the Bt–European Corn Borer Trait

Stanger

Lauer

2007

Agronomy Journal

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“…However, selection for this singly trait could result in undesirable effects on other characteristics (Jampatong et al, 2000), making it necessary to select for stress tolerance based on a set of traits, enabling application of the prolificacy benefits.…”

Section: Resultsmentioning

confidence: 99%

Indirect Selection for Drought Tolerance in Maize Through Agronomic Traits and Seeds

Abreu¹,

Pinho²,

Santos

et al. 2017

RBMS

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-High prolificacy, stay green, and a reduced anthesis-silking interval are among the traits most used for indirect selection for drought tolerance. The objective of this research was to evaluate five maize lines from the maize breeding program of the company Geneseeds Recursos Genéticos Ltda, to drought tolerance, grown at four plant population sizes, 40, 60, 80 and 100 thousand plants ha -1 . In these conditions, the following traits were evaluated: prolificacy, stay green and interval between female and male flowering, which are indirectly related to drought tolerance. The physiological quality of seeds and expression of the enzymes alpha amylase, esterase, catalase, superoxide dismutase, alcohol dehydrogenase, malate dehydrogenase, and heat resistant proteins were also evaluated. The experiment was conducted in a randomized block design in a split plot layout. Differences were observed between the lines for all traits analyzed. Lines 63, 64 and 91 showed the greatest yields and prolificacy, and lines 63, 64, 54 and 91 had the lowest intervals between male and female flowering. No effetc of plant population on the physiological quality of maize seeds was detected, and the highest values of germination and seed vigor were observed in lines 64, 44 and 91. Lines 63, 64 and 91 are considered as promising for drought tolerance. Keywords: Zea mays, Abiotic stress, Flowering, Plant population, indirect selection. SELEÇÃO INDIRETA PARA TOLERÂNCIA À SECA EM MILHO POR MEIO DE CARACTERÍSTICAS AGRONÔMICAS E DE SEMENTESRESUMO -Alta prolificidade, stay green, o reduzido intervalo entre florescimento masculino e feminino estão entre os caracteres mais utilizados para seleção indireta para a tolerância à seca. O objetivo nesta pesquisa foi avaliar cinco linhagens de milho do programa de melhoramento da empresa Geneseeds Recursos Genéticos Ltda., quanto à tolerância à seca, cultivadas em quatro populações de plantio, 40, 60, 80 e 100 mil plantas ha -1 . Nessas condições foram avaliados os seguintes caracteres indiretos relacionados à tolerância à seca: stay green, prolificidade, intervalo entre os florescimentos feminino e masculino. Foi avaliada também a qualidade fisiológica das sementes e a expressão das enzimas alfa amilase, esterase, catalase, superóxido desmutase, álcool desidrogenase, malato desidrogenase e proteínas resistentes ao calor. O experimento foi conduzido em delineamento em blocos casualizados, no esquema de parcelas subdividas. Houve diferenças entre as linhagens para todos os caracteres analisados.

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Defoliation at seedling stage enhances maize yield by reducing lodging

Zou

et al. 2023

Agronomy Journal

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Lodging greatly reduces maize (Zea mays L.) grain yield and harvest efficiency. We conducted a 3-year (2018-2020) field experiment in Fengcheng city, Liaoning, China to investigate the effects of maize seedling defoliation on lodging resistance and grain yield. Two cultivars, Liangyu99 and Hongshuo, were tested without (control treatment) and with defoliation at seedling stage (V4 stage: DS treatment). Compared with the control, DS significantly (p < 0.05) decreased stalk lodging by 63.2%-77.9% and 51.0%-75.1%, contributing to the increase in grain yield by 4.94%-7.76% and 9.75%-19.6% for Liangyu99 and Hongshuo, respectively, during 2018-2020. The improvement of maize lodging resistance by seeding defoliation was mainly due to changes in plant morphology. On average, 12.0% and 21.9% declines in plant and ear heights, respectively, were observed and the number of internodes below the ear was reduced by 1-2 units for both cultivars with DS. A comparison of cultivars revealed that the increase in grain yield with defoliation was approximately twofold greater for Hongshuo than for Liangyu99. The greatest yield increase due to seedling defoliation was observed in 2018, when the yield was lowest with the nontreated control. However, in environments where lodging is less common, suppression of early vegetative growth would probably make little, if any, contribution to maize yield. These results suggest that defoliation of maize seedlings could be a profitable agronomic practice for maize grown in areas that experience frequent lodging.

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Effect of One- and Two-Eared Selection on Stalk Strength and Other Characters in Maize

Cited by 28 publications

References 22 publications

Corn Stalk Response to Plant Population and the Bt–European Corn Borer Trait

Corn Stalk Response to Plant Population and the Bt–European Corn Borer Trait

Indirect Selection for Drought Tolerance in Maize Through Agronomic Traits and Seeds

Defoliation at seedling stage enhances maize yield by reducing lodging

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