Study on waxy corn hybrids - XV. Major botanical characteristic on CNU hybrids using domestic waxy corn germplasm(Zea mays L.)

This research is the phenotypic characteristics and grouping of hybrid waxy corn Zea mays L. product of the top cross had been carried out in the experimental plant Indonesian Cereals Research Institute (ICERI) in Maros South Sulawesi. This research aims to determine the phenotypic characters of the hybrid of waxy corn Zea mays L. product of the top cross and grouping based on its phenotypic characteristics. This research used a randomized block design (RBD) with 17 th treatments (corn strains) and three replications. Waxy corn strains used were: URI 1 (G8), G8G1, G8G2, G8G3, G8G4, G8G5, G8G6, G8G7, Soppeng (G10), G10G1, G10G2, G10G3, G10G4, G10G5, G10G6, G10G7, and Paramitha.. All data (qualitative and quantitative) are arranged in binary tables and grouped using the NTSYST program. The observations show that the data obtained comes from 14 quantitative characters and 17 qualitative characters. Quantitative data from 14 characters were tested and the results of 10 characters were significantly different and the other 4 were not significantly different. The grouping results show that the 17 corn strains studied formed 3 groups at the similarity coefficient of 0.76. Soppeng's corn is different from the others.

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Effect of different drip irrigation depths on the damage of Spodoptera frugiperda (Lepidoptera: Noctuidae) in corn hybrids (Zea mays L.)

Revista Ambientale ◽

10.48180/ambientale.v11i2.98 ◽

2019 ◽

Vol 11 (2) ◽

pp. 42-47

Author(s):

Iracema Raquel Santos BEZERRA ◽

João Pedro Ferreira BARBOSA ◽

Rafael Lima Vieira dos SANTOS ◽

Rafael de Almeida LEITE ◽

Dacio Rocha BRITO ◽

...

Keyword(s):

Zea Mays ◽

Spodoptera Frugiperda ◽

Drip Irrigation ◽

Zea Mays L ◽

Corn Hybrids ◽

Lepidoptera Noctuidae

O milho (Zea mays L.) é uma das culturas de maior importância econômica mundial, entretanto, existem locais com baixos índices pluviométricos que deixam essa cultura sujeita ao déficit hídrico. Para amenizar este problema usa-se irrigação, podendo-se citar a de gotejamento como mais eficiente. No entanto, pragas diminuem a produtividade dessa cultura, principalmente a Spodoptera frugiperda. Assim, à medida que novos híbridos são produzidos, surge a carência de analisar a suscetibilidade deles às pragas. Com isso, objetivou-se neste trabalho, analisar o efeito da aplicação de irrigação por gotejamento em diferentes lâminas nos danos de S. frugiperda em híbridos de milho. A pesquisa foi realizada no Polo Tecnológico Agroalimentar de Arapiraca, com semeadura manual com 5 linhas de 5 m por parcela, sendo essas linhas separadas 0,80 m entre as mesmas e 0,10 m entre plantas. O delineamento experimental foi em blocos casualizados com três repetições dispostas em arranjo fatorial 4x3. Foram avaliadas todas as plantas das parcelas, exceto da bordadura. Os dados foram transformados em √x e submetidos a ANOVA pelo teste F no software SISVAR, havendo significância, realizou-se teste de Tukey e regressão linear. Somente os híbridos diferiram pelo teste F entre os tratamentos, o híbrido Janor foi o que obteve menor média de dano. Conclui-se que houve diferença significativa quantos aos danos de S. frugiperda em híbridos, todavia não foi encontrada diferença entre as lâminas de irrigação por gotejamento nem sua interação com os híbridos.

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Tolerance of Eight Sweet Corn (Zea mays L.) Hybrids to Pyroxasulfone

HortScience ◽

10.21273/hortsci.43.1.170 ◽

2008 ◽

Vol 43 (1) ◽

pp. 170-172 ◽

Cited By ~ 4

Author(s):

Sarah R. Sikkema ◽

Nader Soltani ◽

Peter H. Sikkema ◽

Darren E. Robinson

Keyword(s):

Zea Mays ◽

Plant Height ◽

Weed Management ◽

Zea Mays L ◽

Sweet Corn ◽

Corn Hybrids ◽

Field Corn

Pyroxasulfone is an experimental herbicide for use in field corn (Zea mays L.) and soybean that may have potential for weed management in sweet corn. Tolerance of eight sweet corn hybrids to pyroxasulfone applied preemergence (PRE) at rates of 0, 209, and 418 g·ha−1 a.i. were studied at two Ontario locations in 2005 and 2006. Pyroxasulfone applied PRE at 209 and 418 g·ha−1 caused minimal (less than 3%) injury in Harvest Gold, GH2041, GH9589, GSS9299, GG214, GG446, GG763, and GG447 sweet corn hybrids at 7, 14, and 28 days after emergence. Pyroxasulfone applied PRE did not reduce plant height, cob size, or yield of any of the sweet corn hybrids tested in this study. Based on these results, pyroxasulfone applied PRE at the rates evaluated can be safely used for weed management in Harvest Gold, GH2041, GH9589, GSS9299, GG214, GG446, GG763, and GG447 sweet corn.

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Seed yield of simple and tri-linear corn (Zea mays L.) hybrids for the mexican humid tropics

Acta Agronómica ◽

10.15446/acag.v70n2.93761 ◽

2021 ◽

Vol 70 (2) ◽

Author(s):

Mauro Sierra Macías ◽

Flavio A. Rodríguez Montalvo ◽

Alejandro Espinosa Calderón ◽

Margarita Tadeo Robledo ◽

Noel Orlando Gómez Montiel ◽

...

Keyword(s):

Zea Mays ◽

Seed Yield ◽

Zea Mays L ◽

Block Design ◽

Female Parent ◽

Initial Population ◽

Corn Hybrids ◽

Randomized Block Design ◽

Seed Yields ◽

Genetic Combination

The objective of the work was to evaluate the agronomic performance and seed yield of tropical corn (Zea mays L.) of single and tri-linear crosses. In the spring-summer of 2015 and 2016, two essays were established in the states of Veracruz and Tabasco, Mexico. In the first essay, a group of 12 single crosses was evaluated, and in the second, a group of 18 tri-linear crosses was evaluated. In both essays, the treatments were distributed under a completely randomized block design with three replicates in 5 m long, two-row plots and 0.8 m between rows, with an initial population density of 62.500 plants ha-1. Within the simple cross trial, hybrids HE-3W, COMERCIAL 1, LT-164xLT-165, and HE-1W presented seed yields above the general mean (3384 kg ha-1). Within this outstanding group is the LT-164xLT-165 cross, which participates as a female parent in the formation of the recently released commercial hybrid H-567. In the tri-linear crosses essay, a group of varieties and hybrids including H-567, (LT-164xLT-165) xLT-156, (LT-164xLT-165) xLT-155, (LT-154xLT-155) xLT-165, VS-536, H-520, VS-563, (LT-154xLT-155) xLT-170, (LT-171xLT-172) xLT-156, (LT-164xLT-165) xLT-164, and (LT-171xLT-172) xLT-170 recorded seed yields of 6669.8, 6515.4, 6498.6, 6431.1, 6260, 6024.7, 5935.4, 5664.3, 5580.8, and 5527.1 kg ha-1, respectively. The LT-154, LT-155, and LT-156 lines are common as a male and female parent, suggesting a good genetic combination. The prevailing environmental conditions during the development of the experiments did not significantly influence the productivity of the crosses. There is genetic variability that can be used to continue developing lines, open pollination varieties, and corn hybrids.

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CHEMICAL ELEMENT CONCENTRATIONS IN LEAVES OF DOUBLE-CROSS CORN HYBRIDS (ZEA MAYS L.) AS AFFECTED BY STAND DENSITIES AND DIFFERENT RATES OF NITROGEN

Soil Science ◽

10.1097/00010694-197011000-00008 ◽

1970 ◽

Vol 110 (5) ◽

pp. 339-345 ◽

Cited By ~ 2

Author(s):

D E BAKER ◽

W E GRUBE ◽

H TERELAK ◽

J H McGAHEN

Keyword(s):

Zea Mays ◽

Chemical Element ◽

Zea Mays L ◽

Corn Hybrids ◽

Element Concentrations ◽

Double Cross

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SEASONAL DRY-WEIGHT DISTRIBUTION OF SINGLE-STALKED AND MULTI-TILLERED CORN HYBRIDS GROWN AT THREE POPULATION DENSITIES IN SOUTHERN ALBERTA

Canadian Journal of Plant Science ◽

10.4141/cjps77-155 ◽

1977 ◽

Vol 57 (4) ◽

pp. 1041-1047 ◽

Cited By ~ 2

Author(s):

D. J. MAJOR

Keyword(s):

Zea Mays ◽

Population Density ◽

Weight Distribution ◽

Zea Mays L ◽

Dry Weight ◽

Population Densities ◽

Corn Hybrids ◽

Southern Alberta

Dry weights of component parts of the main stalk and tillers of corn (Zea mays L.) were determined for a multi-tillered hybrid, Stewart Multi G, and single-stalked hybrids, United UH 106 and Warwick SL 209, in 1974 and 1975. The hybrids were grown under irrigation at 35, 70, and 115 thousand plants/ha at Lethbridge, Alberta. Intrarow spacings equalled interrow spacings. At the end of the season, the multi-tillered hybrid had higher total yields at 35,000 plants/ha man single-stalked hybrids because of its large tillers but the single-stalked hybrids had a higher grain content than the multi-tillered hybrid. Tillers developed early in the season, but the number of tillers per plant decreased after reaching a maximum in late July, presumably due to population-density stresses. Decreases in tiller and stalk dry weight at the end of the season may have been due to translocation of carbohydrates to the main stalk and kernels.

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QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO

ENERGIA NA AGRICULTURA ◽

10.17224/energagric.2020v35n2p276-286 ◽

2020 ◽

Vol 35 (2) ◽

pp. 276-286

Author(s):

GICELLY DA SILVA MAIA ◽

WALDENICE LEITE PINHEIRO ◽

FRANCINETE DE ALMEIDA E ALMEIDA ◽

JOSÉ RENAN DA SILVA E SILVA ◽

MAGNUN ANTONIO PENARIOL DA SILVA

Keyword(s):

Zea Mays ◽

Zea Mays L ◽

Corn Hybrids ◽

Tukey Test ◽

Agricultural Performance ◽

Randomized Design ◽

Seedling Length ◽

Physiological Quality ◽

Germination Vigor

QUALIDADE FÍSICA E FISIOLÓGICA DE SEMENTES DE MILHO (Zea mays L.) APÓS ARMAZENAMENTO GICELLY DA SILVA MAIA¹, WALDENICE LEITE PINHEIRO², FRANCINETE DE ALMEIDA E ALMEIDA³, JOSÉ RENAN DA SILVA E SILVA4, MAGNUN ANTONIO PENARIOL DA SILVA5 1 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 2 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 3 Graduanda em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 4 Graduando em Engenharia Agrícola - UFRA, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] 5 Orientador. Professor Adjunto C da Universidade Federal Rural da Amazônia, Campus de Tomé-Açu, PA 451, Km 03, Bairro Açaizal, CEP 68680-000, Tomé-Açu, Pará, Brasil. [email protected] RESUMO: A cultura do milho (Zea mays L.) possui grande importância para a economia mundial e sementes com alto potencial fisiológico são premissas para um bom desempenho produtivo agrícola. Os sistemas de armazenamento objetivam manter a viabilidade das sementes, controlando fatores como umidade e temperatura, principais causas de deterioração. Logo, avaliar o vigor de sementes e seu potencial germinativo, visando como se estabelecerão em campo, é essencial para o controle da qualidade. O presente trabalho buscou avaliar o potencial germinativo e vigor de sementes de quatro híbridos de milho, armazenados em embalagens de papel multifoliado, a partir dos testes de germinação e frio. Foram também avaliados o teor de água, índice de velocidade de germinação, tempo médio de germinação e comprimento de plântulas. Utilizou-se o delineamento inteiramente casualizado, com 4 tratamentos e 4 repetições, os resultados foram submetidos ao teste de Tukey (p < 0,05). O híbrido X2 safra 18/18 com vencimento em junho de 2019, apresentou potencial próximo ao indicado pelo fabricante, os demais não alcançaram o percentual mínimo de germinação apontado pelo fabricante. O armazenamento inadequado das embalagens após abertas podem ter reduzido sua eficácia na conservação das sementes, resultando na redução do potencial fisiológico das sementes de milho. Palavras-chave: embalagens, germinação, vigor. PHYSICAL AND PHYSIOLOGICAL QUALITY OF CORN SEEDS (Zea mays L.) AFTER STORAGE ABSTRACT: The culture of corn (Zea mays L.) has a great importance for worldwide economy and seed with high physiological potential is a premise for good agricultural performance. The storage systems aim to maintain the viability of the seeds, controlling factors such as humidity and temperature, the main causes of deterioration. Therefore, evaluate the vigor of seeds and their germinative potential, aiming at how they will be established in the field is essential for quality control. The present work sought to evaluate the germinative potential and vigor of seeds of four corn hybrids stored in multifoliate paper, based on germination and cold tests. Also applied were: water content, germination speed index, average germination time and seedling length. The randomized design was used, with 4 treatments and 4 repetitions, the results were submitted to Tukey test (p < 0,05). The hybrid X2 crop 18/18, maturing in June 2019, show the next potential indicated by the manufacturer, the rest not achieved or the minimum percentage of germination indicated by the manufacturer. Reduced storage of packages, after opening, can reduce physiological potential of corn seeds. Keywords: packaging, germination, vigor.

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