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Search Results: 1 - 10 of 53068 matches for " David Ariovaldo; "
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Adaptabilidade e estabilidade fenotípica de cultivares de cenoura
Oliveira, Cristina D de;Braz, Leila T;Banzatto, David Ariovaldo;
Horticultura Brasileira , 2008, DOI: 10.1590/S0102-05362008000100017
Abstract: to recognize carrot cultivars with high potential of cultivation, the present study was carried out to determine the productivity, adaptability and phenotypic stability of nine open-pollinated carrot cultivars (alvorada, tropical, brasília [1], nova brasília, carandaí, brasília [2], brazlandia, ht-2000 and brasília-rl). the research was done in s?o josé do rio pardo, s?o paulo state, brazil, during october and november of 2002 and january and march of 2003, under single- and double-row spacing. a total of eight cultivation environments (oct-s; oct-d; nov-s; nov-d; jan-s; jan-d; mar-s and mar-d) were studied using a complete randomized blocks design with three replications. the data were submitted to individual and joint analysis variance and to analysis of adaptability and stability. the cultivars alvorada, nova brasília and brazlandia presented favorable potential for cultivation in the studied seasons and spacings.
Adaptabilidade e estabilidade fenotípica de genótipos de cenoura
Oliveira, Cristina Duda de;Braz, Leila T.;Banzatto, David Ariovaldo;
Horticultura Brasileira , 2005, DOI: 10.1590/S0102-05362005000300011
Abstract: the adaptability and phenotypic stability of ten carrot genotypes, nine of open polinization [alvorada (feltrin); tropical (isla); brasilia (isla); nova brasilia (isla); carandai (svs); brasilia (svs); brazlandia (hortec); ht-2000 (hortec), and brasilia-rl (sakata)] and the hybrid af-845 (sakata), were evaluated under different sowing dates and places. in january and march in sao jose do rio pardo, january and february in ponta grossa and in the first and last week of february in sao gotardo and carandai mg, totalizing eight experiments (sjrp-jan; sjrp-mar; pg-jan; pg-fev; sg-fev'; sg-fev''; c-fev', and c-fev''), in complete randomized blocks with four replications. the data were submitted to individual and joined analysis anova and also to the analysis of adaptability and stability. of the eight environments evaluated, only c-fev'', pg-jan and sg-fev'' were considered favorable to the sowing of carrots, specially the c-fev". among genotypes, in the greater number of environments, 'brazlandia' stood out in total production and commercial roots. in the adaptability analysis, 'brazlandia' and 'brasilia-rl' presented a more than proportional behavior, under environment improvement, being indicated for sowing in favorable environments. the hybrid af-845 showed little response to environmental variations, not being indicated for the studied environments. in general, the genotypes presented a stable behavior in the tested environments.
Produtividade, adaptabilidade e estabilidade fenotípica de cultivares de tomateiro sob diferentes condi??es de ambiente
Gualberto, Ronan;Braz, Leila Trevizan;Banzatto, David Ariovaldo;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000100011
Abstract: the objective of this work was to evaluate productivity, adaptability and phenotypic stability of six tomato genotypes in marília, sp, brazil. the experiments were carried out at nine environments (six of them under conditions of protected cultivation and three under open air conditions), with six genotypes (carmen, diva, donador, graziela, vita and he-295), in a randomized block design, with four replications. there were significant differences among environments, independent of cultivation system. general average of protected cultivations overcame free cultivations considering yield, although the general average of free cultivations was overcame for mean fruit weights. all genotypes, except 'he-295', showed high stability, with prominence for cultivars carmen, donador and vita, which showed higher mean yield, and general adaptability and stability in all environments studied. for mean fruit weights, cultivars diva and vita were the only ones that showed wide adaptability for both environments and highly predictable behavior, with mean fruit weights superior to general average.
Rea??es do algodoeiro CNPA-ITA 90 ao cloreto de mepiquat
LAMAS, FERNANDO MENDES;ATHAYDE, MANOEL LUIZ FERREIRA;BANZATTO, DAVID ARIOVALDO;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000000300005
Abstract: the effects of different doses of mepiquat chloride on cotton (gossypium hirsutum l.) plants, cultivar cnpa-ita 90, during the 1993/94 and 1994/95 growing seasons were evaluated at itamarati farm, ponta por?, ms, brazil. the doses were split in three application dates and the experimental design was in randomized blocks, with five treatments replicated four times. the treatments were as follows: 1) unsprayed control; 2) 12.5+12.5+25.0 (50.0); 3) 25.0+25.0+25.0 (75.0); 4) 0.0+50.0+50.0 (100.0); and 5) 12.5+62.5+50.0 (125.0) g ha-1 of mepiquat chloride. the spraying was done at 34, 47 and 62 days after emergence (dae) in 1993/94 and at 42, 60 and 73 dae in 1994/95, when the plants were at the average hight of 51, 84 and 93 cm and 61, 79 and 97 cm, respectively. increasing dose of mepiquat chloride caused decreasing in plant height; leaf stems and total above ground dry matter; number of nodes and branching; the branches length; the number of damaged fruits; the total number of bolls and the number of fully opened bolls.
Produtividade, adaptabilidade e estabilidade fenotípica de cultivares de tomateiro sob diferentes condi es de ambiente
Gualberto Ronan,Braz Leila Trevizan,Banzatto David Ariovaldo
Pesquisa Agropecuária Brasileira , 2002,
Abstract: O objetivo deste trabalho foi estudar o desempenho produtivo, adaptabilidade e estabilidade fenotípica de seis genótipos de tomateiro na regi o de Marília, SP. Os experimentos foram conduzidos em nove ambientes (seis sob condi es de cultivo protegido e três sob condi es de céu aberto), com seis genótipos (Carmen, Diva, Donador, Graziela, Vita e HE-295), em blocos casualizados, com quatro repeti es. Ocorreram diferen as significativas entre ambientes, e a média geral dos cultivos protegidos superou a dos cultivos a céu aberto quanto à produtividade, apesar de a média geral dos cultivos a céu aberto ser superior quanto ao peso médio de frutos. As cultivares, à exce o de HE-295, demonstraram alta estabilidade, merecendo destaque as cultivares Carmen, Donador e Vita, que tiveram rendimento médio superior ao da média geral, adaptabilidade geral e comportamento previsível em todos os ambientes estudados. Quanto ao peso médio dos frutos, as cultivares Diva e Vita foram as únicas que mostraram ampla adaptabilidade a todos os ambientes, comportamento previsível, além de apresentarem peso médio do fruto superior ao da média geral.
Rea es do algodoeiro CNPA-ITA 90 ao cloreto de mepiquat
LAMAS FERNANDO MENDES,ATHAYDE MANOEL LUIZ FERREIRA,BANZATTO DAVID ARIOVALDO
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Com o objetivo de avaliar os efeitos de diferentes doses de cloreto de mepiquat aplicadas parceladamente no algodoeiro (Gossypium hirsutum L.) cv. CNPA-ITA 90, dois experimentos foram conduzidos durante os anos agrícolas de 1993/94 e 1994/95, na Fazenda Itamarati, Ponta Por , MS. As doses estudadas foram: 1) 0,0; 2) 12,5+12,5+25,0 (50,0); 3) 25,0+25,0+25,0 (75,0); 4) 0,0+ 50,0+50,0 (100,0) e 5) 12,5+62,5+50,0 (125,0) g ha-1 de cloreto de mepiquat. O delineamento experimental utilizado foi o de blocos casualizados, com quatro repeti es. As aplica es foram efetuadas aos 34, 47 e 62 dias após a emergência (DAE), em 1993/94, e aos 42, 60 e 73 DAE no ano de 1994/95, quando as plantas apresentavam altura média de 51, 84 e 93 cm e 61, 79 e 97 cm, respectivamente. Com o aumento da dose de cloreto de mepiquat, verificou-se redu o da altura de plantas, da matéria seca foliar, do caule e do total da parte vegetativa, do número de nós, de ramos, do comprimento de ramos, do número de frutos danificados e do número de ma s, e aumento do número de capulhos totalmente abertos.
Desenvolvimento inicial da parte aérea e do sistema radicular do guandu, Cajanus cajan (L.) Millsp
Santos, Durvalina Maria Mathias dos;Rodrigues, Teresinha de Jesus Deléo;Banzatto, David Ariovaldo;
Acta Botanica Brasilica , 1998, DOI: 10.1590/S0102-33061998000400019
Abstract: the objective of this study was to analyse the early development of two cultivars of the pigeonpea (cajanus cajan (l.) millsp.), namely iac-fava larga (c1), icp-7035 (c3) and the inbred line iac-87318 (c2), at 14, 28 and 42 days after sowing (das). the experiment was conducted under greenhouse conditions, and the following characteristics were evaluated: height (cm), leaf number, leaf area (dm2), root density (cm/cm3 of soil), and dry mass (g) of the stems, leaf blades and roots. the experiment was conducted under a completely randomized design with three replications. the means of growth of the cultivars were compared by tukey's test, at each sampling date. cultivar c2 presented the highest growth of the root system at 14, 28 and 42 das. cultivars c3 and c1 presented less vigorous seedlings, with fewer roots. the roots of c1, c2 and c3, were 60cm deep at 14 das, and the roots of c2 and c3 reached 100cm at 42 das.
Características agron?micas, produtividade, qualidade de vagens e divergência genética em feij?o-vagem de crescimento indeterminado
Peixoto, Nei;Braz, Leila T.;Banzatto, David Ariovaldo;Moraes, Ednan A.;Moreira, Francisco M.;
Horticultura Brasileira , 2002, DOI: 10.1590/S0102-05362002000300010
Abstract: genetic divergence among fifteen breeding lines (hav 13, hav 14, hav 21, hav 22, hav 25, hav 38, hav 40, hav 41, hav 49, hav 53, hav 56, hav 64, hav 65, hav 67 and hav 68) and five cultivars (macarr?o favorito ag480, macarr?o preferido ag482, manteiga maravilha ag481, teresopolis ag484 and macarr?o bragan?a) of pole beans was evaluated by 20 agronomic characteristics. the field trial was carried out at anapolis experiment station, state of goias (brazil), from april 30 to august 10, 1998. the data obtained were submitted to analysis of variance and to the multivariate analysis (d2 distance of mahalanobis and grouping method of tocher). there were statistical differences among genotypes for all studied characteristics. hav 13, hav 49, hav 56, hav 64, hav 68, macarr?o favorito ag480 and teresopolis ag484 ranked best when the whole characteristics suitable to growers and consumers were considered. there were higher frequency of pairs with the highest distances, when teresopolis ag484 or the breeding line hav 49 were a member. the pairs with the lowest distance were those ones with the breeding line hab 229 as common ancestor. the genotypes were classified into four groups, one with the inbred line hav 49, a second with manteiga maravilha ag481 and teresopolis ag 484. the inbred line hav 41 and the cultivars macarr?o favorito ag480 and macarr?o preferido ag482 formed a third group. the remaining genotypes formed a single group. the characteristic time from sowing to beginning of blooming and pod length, with 58.11% of the contribution, followed by percentage of straw in the dry pod, pod width, plant height, pod weight and number of pod per plant. these characteristics were the most effective to genotypes divergence, reaching 85.73% of the total contribution.
Esverdeamento em cultivares de batata avaliado pela escala visual e índice spad
Feltran, José Carlos;Lemos, Leandro B.;Artioli, Gisele Maria;Banzatto, David Ariovaldo;
Horticultura Brasileira , 2004, DOI: 10.1590/S0102-05362004000400003
Abstract: the occurrence of greening in potato tubers was evaluated through two evaluation methods (visual scale of notes and spad index). the experimental design was a completely randomized, with four replications. treatments were disposed in the factorial sceme 18x5, constituted of potato cultivars (agata, apu? (iac-5977), aracy (iac-2), iac aracy ruiva, asterix, bintje, dali, clone iac-6090, itararé (iac-5986), laguna, remarka, liseta, mondial, novita, oscar, picasso, santana and solide) and storage time (5; 10; 15; 20 and 25 days). all potato cultivars presented positive linear effects when evaluated through the spad index, except 'bintje', with average spad index of 1,23. for the visual scale, quadratic and linear effects were verified. 'bintje' is resistant to the greening when evaluated by both methods. the spad index can be used for determining of the greening from 10o to the 25o day of storage.
Germina??o de sementes de guandu sob efeito da disponibilidade hídrica e de doses subletais de alumínio
Marin, Ad?o;Santos, Durvalina Maria Mathias dos;Banzatto, David Ariovaldo;Ferraudo, Antonio Sergio;
Bragantia , 2004, DOI: 10.1590/S0006-87052004000100002
Abstract: the aim of the work was to evaluate the effect associated with water stress and aluminum sublethal doses on seed germination of pigeonpea, iapar 43-arat? and iac fava larga cultivars. the experiment was carried out at faculdade de ciências agrárias e veterinárias-unesp, in jaboticabal, s?o paulo state, from march to may 2002. the seeds germinated in germination boxes lined with blotters moistened with solutions of polyethyleneglycol, peg 6000 (0,0; -0,6; -0,9, -1,2 e -1,5 mpa) and aluminum sulphate (0,0; 2,5; 5,0; 7,5; e 10,0 mmol.dm-3). the experimental design was a complete randomized in factorial arrangement 2 x 5 x 5 (2 cultivars; 5 water stresses; 5 aluminum doses) and four replications of 50 seeds. the statistical analysis was complemented with the clustering analysis and principal component analysis. seed germination was evaluated, four and ten days after sowing. the experiment was conducted in germination chamber at 25 °c ± 1 °c. on the tenth day, the seedlings were separated in plumule and radicle for dry mass determination. the water stress appeared to be the critical limiting factor for germination and seedling establishment. the joint effects of water stress and aluminum were significantly greater at moderate water stress, the effects of aluminum being more pronounced only when severe water stress was absent. the germination of the iapar 43-arat? cultivar and the roots growth of the iac fava larga cultivar were reduced, respectively, by water stress and aluminum.
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