scholarly journals Yield Losses Due to Inbreeding and the Use of Molecular Markers (RAPD) for Assessment of Genetic Purity in Hybrid Corn (Zea mays L.)

2006 ◽  
Vol 5 (1) ◽  
pp. 1-14
Author(s):  
C. Andreoli ◽  
C.C. Carvalho ◽  
R.V. Andrade
Keyword(s):  
Zea Mays ◽  
Molecular Markers ◽  
Zea Mays L ◽  
Yield Losses ◽  
Genetic Purity ◽  
Hybrid Corn

scholarly journals Fertilización Con Potasio Y Fosfitos, Sobre El Rendimiento De Maíz Duro (Zea Mays) En La Zona Subcentral Litoral

2018 ◽  
Vol 14 (15) ◽  
pp. 46
Author(s):  
Álvaro Lamilla Arana ◽  
Eduardo Colina Navarrete ◽  
Carlos Castro Arteaga ◽  
Danilo Santana Aragone ◽  
Guillermo García Vásquez ◽  
...  
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Potassium Sulfate ◽  
Hybrid Corn ◽  
Calcium Magnesium ◽  
San Juan County ◽  
Muriate Of Potash

The investigation evaluated the effect of fertilizers potásicos with fosfitos on the yield of grain of hard corn (Zea mays L.), in the Property "Santiago", located in the Km 26 way Babahoyo-San Juan, county of Los Ríos. A rehearsal settled down in the hybrid corn DK-7088, measuring the answer from the corn to the application of fertilizers potasic and fhosphite, to determine the dose with more effect on the production. 19 treatments were proven with Chloride of potassium, Sulfate of potassium and Nitrate of potassium, with fhosphite of Calcium, Magnesium and Potassium, more a witness without applications. The used experimental design was complete Blocks at random in three repetitions, the evaluated variables were subjected to the variancia analysis, and the test was applied from Tukey to 95% of probability. The evaluated parameters were: plant height, days to flowering, longitude and ear diameter and yield for hectare. Found increases in grain yield with three treatments, highlighting the treatment with the application of muriate of potash in conjunction with Calcium phosphide (9451,65 kg ha1 ). The results indicate the possibility of increases of more than 49% in relation to the witness (6339 kg ha1 ) where there was applied the treatments.

RECENT ADVANCES IN MATURITY AND YIELD OF GRAIN CORN HYBRIDS TESTED IN THE MARITIMES

1989 ◽  
Vol 69 (4) ◽  
pp. 1259-1263
Author(s):  
R. P. WHITE ◽  
K. B. McRAE
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Considerable Improvement ◽  
Yield Potential ◽  
Average Yield ◽  
Maritime Provinces ◽  
Corn Hybrids ◽  
Yield Improvement ◽  
Hybrid Corn ◽  
Harvest Maturity

Hybrids evaluated in six regional grain corn (Zea mays L.) trials in the Maritime Provinces of Canada showed considerable improvement in at-harvest grain maturity and some yield improvement between 1981 and 1987. After adjusting for changes in at-harvest maturity between 1981 and 1987, the average yield potential had increased by 4.4% (SE = 1.96). The improvement in at-harvest maturity was on average 3.7% (SE = 0.82), after adjusting for changes in yield, but was greater for hybrids with less than average yield.Key words: Zea mays L., hybrid corn, maturity, yield, hybrid evaluation

scholarly journals Yield of hybrid corn (Zea mays L.) AG 1051 under different plant populations under drip irrigation in Agreste Alagoano

2020 ◽  
Vol 12 (1) ◽  
pp. 1-9
Author(s):  
Rafael Lima Vieira dos SANTOS ◽  
João Pedro Ferreira BARBOSA ◽  
Willian Cleisson Lopes de SOUZA ◽  
Luiz Eduardo Bezerra SILVA ◽  
Dacio Rocha BRITO ◽  
...  
Keyword(s):  
Zea Mays ◽  
Drip Irrigation ◽  
Zea Mays L ◽  
Plant Populations ◽  
Hybrid Corn

- O milho é um dos principais cereais atualmente cultivados em todo o mundo, servindo para a alimentação humana, alimentação animal e matérias-primas para a indústria, destacando-se por suas qualidades nutricionais. Convém ressaltar que a água interfere basicamente em todas as fases do desenvolvimento dessa planta, e por isso, é crescente o investimento dos produtores rurais em sistemas de irrigação, sobretudo em regiões áridas e semiáridas. Assim, objetivou-se com esta pesquisa, avaliar o rendimento do milho (híbrido AG 1051) em função de diferentes espaçamentos a fim de maximizar sua produtividade no período de estiagem sob condições de plantio em irrigação deficitária. A pesquisa foi realizada no Polo Tecnológico Agroalimentar – Arapiraca e os testes foram em uma área experimental, tendo cada parcela 4 linhas, espaçadas entre si por 80cm e cada linha com 5m de comprimento. Foram utilizados três diferentes espaçamentos entre plantas: 10cm, 20cm e 30cm. A irrigação foi deficitária, cuja lâmina diária de água foi 2,5 mm/dia. As variáveis avaliadas foram: peso da biomassa total, das folhas, dos caules, das espigas e das inflorescências masculinas. O delineamento experimental foi em blocos ao acaso com quatro repetições e os dados submetidos à análise estatística pelo software SISVAR e os resultados plotados em gráficos através do software Origin. Por fim, obteve-se rendimento satisfatório e considerável para uma região onde comumente ocorre perda de safra devido à estiagem, pois mesmo a cultura requisitando uma certa quantidade de água na irrigação, foi possível obter resultados eficientes utilizando um sistema de irrigação deficitário.

scholarly journals Moments and number of defoliated leaves and hybrid corn productivity

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
J. Ramirez ◽  
A. Soto ◽  
C. E. Durán ◽  
D. B. Luis
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Zea Mays L ◽  
Statistical Test ◽  
Grain Weight ◽  
Hybrid Corn ◽  
Split Plot ◽  
Corn Productivity ◽  
Hybrid Cultivar

AbstractObjectives: To determine the effect of the time and the number of lower leaves defoliated, on the productivity of hybrid corn (Zea mays L.). Methodology: Randomized complete blocks design was used, with arrangement of split plot and four replications, using the hybrid cultivar DK 7088. The plots corresponded to the defoliation times: 0, 14 and 28 days after pollination (DAP) and the subplots, number of defoliated leaves (DL): zero, two,four and six. The leaves were defoliated just below the ear, from top to the bottom. The total number of treatments was 12. Scott-Knott statistical test with a level of 5 % was used for the comparison of means. The traits studied were grain weight per ear, ear weight and grain yield per hectare. Results: The interaction between defoliation time and number of lower defoliated leaves was significant (P < 0.05) for grain weight per ear, ear weight andgrain yield. The defoliation of two, four and six leaves during pollination reduced the grain weight per ear, weight per cob and grain yield, being significantly lower than the no defoliated plants. At 14 and 28 days after pollination, defoliation did not affect significantly (P > 0.05) grain yield, but grain weight per ear and ear weight decreased (P< 0.05). Conclusions: The defoliation of lower leaves made during the pollination, reduces the grain weight per ear, ear weight and grain yield, while defoliation 14 days after pollination did not affect significantly the grain yield per hectare.Keywords: Zea mays, defoliation, leaves, grain yield

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