scholarly journals Establishment of an early selection method (criteria) for breeding in cowpea (Vigna unguiculata)

2020 ◽  
Vol 12 (2) ◽  
pp. 106-130
Author(s):  
Oside Millicent Avosa ◽  
Martin Orawu ◽  
Obia Patrick Ongom ◽  
Onziga Isaac Dramadri ◽  
Amandin Rutayisire ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Selection Method ◽  
Early Selection

scholarly journals The Study of Early Selection Method through Vigor and Viability Parameter in Citrus amblycarpa (Hassk) under Salinity and Drought Stress Condition

2018 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Anggi Nindita ◽  
Choirul Umam ◽  
Siti Fatimah ◽  
Faiza Suwarno
Keyword(s):  
Drought Stress ◽  
Stress Condition ◽  
Selection Method ◽  
Early Selection ◽  
Sand Soil ◽  
Seed Moisture Content ◽  
Talcum Powder ◽  
Peg 6000 ◽  
The Third ◽  
Drought Stress Condition

The study was aimed to obtain information regarding the early selection method of Limau lime under saline and drought condition including the proper method for seed extraction, observation period in germination testing, and type of germination media. The experiment was conducted from March 2015 to January 2016 at the Laboratory of Seed Science and Technology, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University. It consisted of four main experiments. The first experiment was the extraction method on Limaulime seed using distilled water, ash from the husk, talcum powder, and HCl 1%. The second experiment was germination testing of lime seed using three media i.e. sand, the combination of sand: soil (1:1) (v:v), and towel tissue. The third experiment has tested the vigor of Limau lime seeds in different saline conditions by using NaCl, i.e. 1500 ppm, 3000 ppm, and 4500 ppm. The fourth experiment, tested the vigor of Limau lime seeds in drought stress condition using PEG 6000, i.e. 0, - 0.75 bar, -1.5 bar, and -2.25 bar. The result of the first experiment showed that the treatments had no significantly different effect on all variables observed except for the seed moisture content. The second experiment revealed that the best germination media was elucidated from sand treatment and sand: soil (1:1) with the first and the second count at 20th and 29th day respectively. The result of the third and four experiment elucidated that the higher concentration of NaCl (Salinity stress condition) or PEG 6000 (drought stress condition), the smaller the germination percentage of Limau Lime’s seeds.

scholarly journals Incorporation of compound inflorescences and selection of high-yielding progenies in cowpea

2018 ◽  
Vol 53 (10) ◽  
pp. 1150-1157
Author(s):  
Karla Annielle da Silva Bernardo ◽  
Francisco Rodrigues Freire Filho ◽  
Valdenir Queiroz Ribeiro ◽  
Paulo Fernando de Melo Jorge Vieira ◽  
Ângela Celis de Almeida Lopes ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Vigna Unguiculata ◽  
Plant Architecture ◽  
Block Design ◽  
Genetic Material ◽  
Early Selection ◽  
Genetic Gains ◽  
Lattice Design ◽  
Commercial Cultivars ◽  
Selection Of

Abstract: The objective of this work was to obtain cowpea (Vigna unguiculata) progenies with compound inflorescences, short peduncles, early cycle, good plant architecture, and high-yielding potential. The initial genetic material consisted of 453 F2:3 progenies, selected from ten crosses and evaluated using Federer’s augmented block design, with two controls. Of these, 60 progenies from the F4:5 and F4:6 generations were selected and assessed in two consecutive experiments, both in a 8x8 lattice design with four controls and four replicates. Early selection was efficient at fixing the evaluated traits. A wide genetic variability was detected among and within progenies. The estimated and obtained heritability and genetic gains in the F4:5 and F4:6 progenies indicate the possibility of selection of early progenies with short peduncles, compound inflorescences, and productivity similar to or greater than that of the commercial cultivars used as controls.

scholarly journals Early Selection Method for Introducing Short-internode-trait in Tomato

2013 ◽  
Vol 12 (4) ◽  
pp. 367-372 ◽  
Author(s):  
Tetsushi Tanaka ◽  
Tetsuya Oyabu ◽  
Eiichi Inoue
Keyword(s):  
Selection Method ◽  
Early Selection ◽  
Short Internode

НАРАТИВ ЯК КОНТЕНТНА ОСНОВА МІЖНАРОДНИХ СТРАТЕГІЧНИХ КОМУНІКАЦІЙ

2020 ◽  
pp. 4
Author(s):  
N. Zykun ◽  
A. Bessarab ◽  
L. Ponomarenko
Keyword(s):  
Selection Method ◽  
Historical Narrative ◽  
Neutral Position ◽  
Main Task ◽  
Grand Narrative ◽  
National Narrative ◽  
Strategic Communications ◽  
Analysis And Synthesis ◽  
The Media ◽  
International Interaction

<p><em>The article, basing on the analysis of selected media texts with reference to narrative from the leading Ukrainian newspapers «Dzerkalo Tyzhnia» (Weekly Mirror), «Den» (Day), «Ukraina Moloda» (Young Ukraine) for 2016–2020, the semantic and content characteristics of the «narrative», «strategic narrative», «small narratives» nominations has established; the directions of the semantic realization of the meaning of the narrative and its possibilities in the process of international strategic communications aimed at both external and internal audience, are outlined. It is proved that the main task of a strategic, or national, narrative is a reasoned explanation to the state population and interested audiences of specific realities, intentions, plans; justification of certain directions of state activity aimed at partners, at opponents and those occupying a neutral position.</em></p><p><em>There are divided the spheres of use of different narratological nominations: in international communications and in scientific discourse, the conceptual foundations of state identity and international interaction are referred to as strategic narrative or grand narrative, in publicistic discourse the narrative nomination is used, more rarely – historical narrative, national narrative.</em></p><p><em>The scientific novelty of the research is that the focus is on the media aspect of the use of one of the key concepts of strategic communications and the role of the media in its implementation.</em></p><p><em>The main general scientific methods used in this article are descriptive and comparative ones, as well as analysis and synthesis. The following empirical methods were also used: solid selection method (solid selection method for allocation texts with the «narrative» lexeme; quantitative method of content analysis with elements of qualitative one – for characterizing the semantic of the «narrative» term).</em></p><p><em>The results of the study can be used in the complex research of the technology of international strategic communications and in the practical activity of specialists in international strategic communications, a new trend in Ukraine, which is currently under active institutionalization.</em></p><strong><em>Key words:</em></strong><em> international strategic communications, propaganda, narrative, strategic narrative, grand narrative, «small narratives».</em>

Comportamento de genótipos de feijão-caupi (Vigna unguiculata L. Walp., Fabaceae) sob infestação de Empoasca sp. (Hemiptera: Cicadellidae) e Liriomyza sp. (Diptera: Agromyzidae) em Redenção, Ceará, Brasil

Paubrasilia ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 18-23
Author(s):  
Francisca Arila Maciel de Souza Xavier ◽  
João Gutemberg Leite Moraes ◽  
Marcos Levi Saraiva Silva ◽  
Rufino Barreto de Matos Neto ◽  
Damila de Oliveira Firmino ◽  
...  
Keyword(s):  
Vigna Unguiculata

O feijão-caupi (Vigna unguiculata L. Walp.) é uma fabácea utilizada como fonte alimentar em diversos países da África, Ásia e Américas. Objetivou-se, com esta pesquisa, avaliar o comportamento de genótipos de feijão-caupi ao ataque de cigarrinha-verde (Empoasca sp.) e de minador (Liriomyza sp.). O experimento foi conduzido na Fazenda Experimental Piroás da Universidade da Integração Internacional da Lusofonia Afro-Brasileira (Unilab), nos meses de agosto a outubro de 2018, onde se utilizou o delineamento experimental em blocos ao acaso, com 15 tratamentos e quatro repetições. Para a cigarrinha, foi avaliado o número de indivíduos por planta na parcela útil, aleatoriamente, uma vez na semana, ao longo de nove semanas. Já para a minadora, foi avaliada a frequência de minas, na parcela útil e ao acaso, ao longo de quatro semanas. Os dados acumulados na última amostragem foram transformados [(x + 0,5)1/2] e submetidos à análise de variância, sendo as médias comparadas pelo teste Scott-Knott. Os genótipos BRS Juruá, BRS Marataoã, Rabo de Soin, BRS Guariba, BR 17 Gurguéia, BRS Xiquexique, BRS Potengi, BRS Aracê, BRS Cauamé, BRS Imponente, BRS Itaim, BRS Tumucumaque e Vita-7 foram menos suscetíveis ao ataque de Empoasca sp., enquanto que BRS Aracê, Rabo de Soin e Vita-7 foram menos atacados por Liriomyza sp.

Farmers’ preference for improved grasses and legume forage species in six mixed farming system districts of southern region of Ethiopia

2017 ◽  
Vol 4 (2) ◽  
pp. 23-27
Author(s):  
Mergia Abera ◽  
Tekleyohannes Berhanu
Keyword(s):  
Vigna Unguiculata ◽  
Vegetative Growth ◽  
Farming System ◽  
Elephant Grass ◽  
Lablab Purpureus ◽  
Forage Legumes ◽  
Forage Crops ◽  
Forage Species ◽  
Herbage Yield ◽  
Chloris Gayana

Participatory on-farm evaluation of improved forage crops was conducted in six mixed farming system districts of Southern Ethiopia with the objective to identify farmers preferred forage crops (legumes and grasses). Two annual forage legumes (Vigna unguiculata L. (cow pea) and Lablab purpureus (L.), two perennial legumes (Medicago sativa (L.) (alfalfa) and Desmodium intortum (Mill.) Urb. (green-leaf)), and three perennial grasses (Chloris gayana Knuth (Rhodes grass) and two Pennisetum purpureum Schumach (elephant grass) accessions (No.16800 and 16798)) were evaluated in the study. The major farmers’ criteria considered in the evaluation of forage species were vegetative growth, herbage yield, tillering, protection of soil erosion, palatability, perfor- mance under dry weather conditions, performance in marginal area under low input management, multipurpose use (conservation and soil fertility) and fast growing condition. The study showed that elephant grass accession No. 16798, 16800 and Chloris gayana adapted well and farmers preferred them for their higher herbage yield, vegetative growth, tillering ability and drought resistance. Even though the annual forage legumes Lablab purpureus and Vigna unguiculata were superior in their forage yield, the farmers preferred the perennial forage legumes (Desmodium intortum and Medicago sativa) mainly for their performance under dry weather condi- tion due to their longer growth period. Therefore, the consideration of farmers’ preference for forage crops is crucial for increased adoption of improved forage crops in the region.

RENDIMENTO DE CULTIVARES DE CAUPI (Vigna unguiculata L Walp.) SUBMETIDAS À DIFERENTES LÂMINAS DE IRRIGAÇÃO

Irriga ◽  
1999 ◽  
Vol 4 (3) ◽  
pp. 139-144 ◽  
Author(s):  
Gianini Peixoto Bezerra Lima ◽  
José Vanglesio de Aguiar ◽  
Raimundo Nonato Távora Costa ◽  
Vital Pedro da Silva Paz
Keyword(s):  
Vigna Unguiculata ◽  
Irrigation System ◽  
Northeast Brazil ◽  
Marginal Product ◽  
Applied Water ◽  
Cowpea Cultivars ◽  
The North ◽  
Significant Difference ◽  
Caixa Postal ◽  
Water Depths

RENDIMENTO DE CULTIVARES DE CAUPI (Vigna unguiculata L Walp.) SUBMETIDAS À DIFERENTES LÂMINAS DE IRRIGAÇÃO1       Gianini Peixoto Bezerra Lima José Vanglesio de Aguiar Raimundo Nonato Távora Costa Universidade Federal do Ceará – Departamento de Engenharia Agrícola. Campus do Pici. Bloco 804. CEP 60455-760 – Fortaleza-CE Vital Pedro da Silva Paz Escola Superior de Agricultura Luiz de Queiroz – Departamento de Engenharia Rural, bolsista da FAPESP. Av. Pádua Dias, 11 – Caixa Postal 11. 13418-900 – Piracicaba-SP       1 RESUMO       O caupi é um dos cultivos mais tradicionais do Norte e Nordeste do Brasil, constituindo alimento básico nestas regiões. Com este trabalho foi possível estabelecer relações entre a quantidade de água aplicada e produtividade de grãos, para três variedades de feijão caupi submetidas a diferentes lâminas de água. Para caracterização das lâminas de água foi utilizado um sistema de irrigação por aspersão convencional em linha. O controle da irrigação foi realizado a partir de tensiômetros instalados à 15 cm de profundidade. Os resultados mostraram que: i) a cultivar João Paulo II apresentou melhores resultados de produtividade para as lâminas de água aplicadas que variaram de T1 = 291,8 mm a T5 = 141,2 mm; ii) sob condições de reduzida disponibilidade de água, ou seja, menor lâmina aplicada, não ocorreu diferença estatística  para a produtividade entre as cultivares estudadas; e iii) para as condições do estudo, a cultivar Setentão apresentou a menor taxa de redução do produto marginal.       UNITERMOS: caupi, irrigação, função de produção       LIMA, G. P. B., AGUIAR, J. V., COSTA, R. N. T., PAZ, V. P. S. Responses OF cowpea cultivars (Vigna unguiculata L Walp) at differents irrigation deficits     2 ABSTRACT       The caupi is one of the most traditional cultivation of the north and northeast - Brazil, constituting a basic food in these areas. With this work it was possible to establish relationships between the amount of water applied and productivity of grains, for three caupi varieties submitted to different irrigation sheets. To diferentiate water depths in the irrigation system, the aspersion in line was used. The control of the irrigation was accomplished using tensiometers installed to 15 cm of depth. The results showed that: i) the João Paulo II variety presented better productivity for the applied water depths; ii) under reduced conditions of water avai lability for study conditions, these was no significant difference in the productivity reached among the cultivars studied; and iii) for the conditions of the study, the variety Setentão presented the smallest rate of reduction of the marginal product.       KEYWORDS: cowpea, irrigation, production function  

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