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Guandu bean (Cajanus cajan (L.) Millsp.) on tropical forest restoration/ Feij o guandu (Cajanus cajan (L.) Millsp.) na restaura o de florestas tropicais  [cached]
Tiago Pavan Beltrame,Efraim Rodrigues
Semina : Ciências Agrárias , 2007,
Abstract: This work aims to evaluate alternative models in forest restorations by means of agroforestry systems, where a leguminous species is incorporated to the system. The hypothesis is that guandu bean Cajanus cajan (L.) Millsp., in combination and intercropped with native species, can promote restoration by decreasing mortality and increasing tree basal area and height. Cajanus cajan was planted in line with the forest seedlings in 2 x 4 m spacing. Four different treatments were analyzed; 1) control, with no Cajanus cajan ; 2) one seedling of Cajanus cajan between the forest seedlings in the plantation line; 3) two seedlings of Cajanus cajan between the forest seedlings in the plantation line; and 4) full harvest Cajanus cajan six months after plot implementation. In each treatment, 100 native trees (Fifty pioneer, and fifty non pioneer trees) were measured and evaluated in mortality rates, height, and basal diameter. Guandu planting reduced pioneer mortality, increased basal area, and tree height of all species. In spite of the mortality was not affected by guandu density, the density of one plant of guandu was associated with larger basal area and tree average height. The mortality reduction of non pioneers on the absence of guandu trees was interpreted as a response of antropic pioneers to the increased solar radiation. This result points to the differences in tree behavior between fertile gaps (on which the classification on sucessional stages was based) and degraded areas. The positive effects of guandu planting recommend its use for the ecological restoration cost reduction. O objetivo deste trabalho é avaliar formas alternativas de restaura o de áreas degradadas, utilizando sistemas agroflorestais com uma espécie leguminosa incorporada ao sistema. A hipótese é que o feij o guandu (Cajanus cajan (L.) Millsp.) possa auxiliar o processo de restaura o, diminuindo a mortalidade e aumentando a altura e área basal das árvores. O feij o guandu foi plantado na linha de plantio florestal, entre as espécies florestais nativas da regi o, que foram plantadas em espa amento 2 X 4m. Foram avaliados quatro tratamentos: plantio florestal sem feij o guandu (testemunha); uma planta de feij o guandu consorciado entre duas plantas de espécies florestais; duas plantas de feij o guandu consorciado entre duas plantas de espécies florestais; e corte raso aos seis meses após o plantio do feij o guandu consorciado com as espécies florestais. Em cada tratamento, foram sorteados 100 indivíduos sendo 50 pioneiras e 50 n o pioneiras, nos quais foram medidos mortalidade, altura e
Propriedades funcionais da farinha e concentrado protéico de feij?o guandu (Cajanus cajan (I.) Millsp)
Mizubuti,Ivone Yurika; Biondo Júnior,Oswaldo; de Oliveira Souza,Luiz Waldemar; dos Santos Ferreira da Silva,Rui Sérgio; Iouko Ida,Elza;
Archivos Latinoamericanos de Nutrición , 2000,
Abstract: functional properties of pigeon pea (cajanus rajan (l) millsp) flour and protein concentrate. the objective of this investigation was to study the functional properties of pigeon pea (cajanus cajan (l.) millsp) flour and protein concentrate. the solubility of both samples were superior than 70% at ph above 6.7 and below 3.5. the water and oil absorption were 1.2 and 1.07 ml/g of sample and 0.87 and 1.73ml/g of flour and protein concentrate samples, respectively. the minimum concentration of flour and protein concentrate needed for gelation was 20% and 12%, respectively. the emulsifying capacity of flour and concentrate was 129.35g and 191.66g oil/g of protein and the emulsion stability 87.50and 97.97%, respectively, after 780 minutes. the foam capacity and stability of flour foam were 36.0% and 18.61, while of the concentrate were 44.70% and 78.97% after 90 minutes. these properties indicate that the flour as well as the concentrate could have application in various food systems.
Caracteriza o de linhagens puras selecionadas de guandu (Cajanus cajan (L.) Millsp) (1)  [cached]
Godoy Rodolfo,Batista Luiz Alberto Rocha,Souza Francisco H. Dübbern de,Primavesi Ana Candida
Revista Brasileira de Zootecnia , 2003,
Abstract: O objetivo do presente trabalho foi caracterizar morfologicamente dezessete linhagens de guandu que haviam sido selecionadas por diversos critérios, em ensaios de avalia o agron mica, após o que haviam passado por processos de autofecunda o, sele o e multiplica o, para obten o de linhagens puras. Teve por objetivos também verificar a eficiência dos descritores utilizados e descrever seu ciclo vegetativo. Foi possível fazer essa descri o e concluir que as dezessete linhagens utilizadas possuíam características distintas, pelas quais podem ser facilmente identificadas. Verificou-se que os descritores utilizados revelaram-se suficientes para caracterizar as dezessete linhagens e que podem ser feitas simplifica es nos descritores. As sementes das cultivares comerciais utilizadas no presente trabalho possuíam mistura mecanica.
Aspectos tecnológicos e sensoriais do guandu [Cajanus cajan (L.) Millsp.] enlatado em diferentes estádios de matura o  [cached]
BARCELOS M.F.P.,TAVARES D.Q.,SILVA M.A.A.P.,MIRANDA M.A.C.
Ciência e Tecnologia de Alimentos , 1999,
Abstract: O objetivo deste trabalho é viabilizar a introdu o do guandu verde enlatado no mercado brasileiro. Foram realizadas três colheitas de gr os ainda verdes da cultivar IAC Fava Larga obtidos no 44o, 57o e 62o dia após a flora o (DAF) e finalmente no 92o DAF, quando os gr os já possuíam cor pardo-amarelada. Para todos os lotes, após otimiza o das condi es de enlatamento, 121oC durante 5 a 6 minutos, efetuaram-se estudos quanto ao acúmulo de matéria seca, composi o dos gr os, cor, textura e aceita o sensorial. Conclui-se, através do acúmulo de matéria seca do gr o, que a maturidade fisiológica ocorreu em torno do 62o DAF, quando também apresentou as melhores características para o enlatamento. As cores dos gr os pós-enlatamento, vermelha e amarela (unidades Lab Hunter) apresentaram estáveis até o 62o DAF. A textura foi gradativamente mais firme com o avan o do amadurecimento tendo verificado correla o positiva (r = 0,96) entre medidas de texturas sensorial e instrumental. A aceita o do guandu enlatado cultivar IAC Fava Larga foi apenas regular.
Coast cross (Cynodon dactylon (L.) pers.) hay and pigeon pea (Cajanus cajan (L.) millsp) digestibility and nutrients average intake by sheep under two feeding systems/ Consumo médio e digestibilidade do feno de capim “Coast cross” (Cynodon dactylon (L.) pers.) e feij o guandu (Cajanus cajan (L.) Millsp) em carneiros submetidos a dois regimes alimentares  [cached]
Ivone Yurika Mizubuti,Edson Luis de Azambuja Ribeiro,Marco Antonio da Rocha,Fernanda Barros Moreira
Semina : Ciências Agrárias , 2007,
Abstract: This experiment was carried out with the objectives of determining the daily average intake (DAI), apparent digestibility coefficient (ADC) of coast cross hay and pigeon pea nutrients and to evaluate thenitrogen balance in sheep. Ten wethers with average weight of 27.50 kg, alloted to suitable cages, were used. A completely randomized design with two treatments (T1= 80% coast cross hay + 20% pigeon peaand T2= 60% coast cross hay + 40% pigeon pea) and five replicates, was used. The treatments were evaluated under two feeding systems (voluntary and restrict). Animals receiving ration of T2 presentedhigher DAI (g/kg PV 0.75) (P<0.05) of dry matter (DM), crude protein (CB), crude fiber (CF), organic matter (OM) and nitrogen free extract (NFE), than animals receiving ration of T1. ADC of CF of the T2 were higher (P<0.05) than the ration T1. The nitrogen balance (BN) of animals that received 40% of pigeon pea (13.15g N/dia) was superior to the those receiving 20% of this leguminous (10.29g N/dia). It can be concluded that the pigeon pea can be used as protein source in the ruminant feeding, making possible ADC for DM close to 52% for animals in voluntary intake and 81% for animals in restricted intake. The increase in the percentage of pigeon pea in the sheep diets fed with Coast-cross hay can result in improvement of diet CF digestibility, as well as, in animals nitrogen balance. O experimento foi realizado com os objetivos de determinar o consumo médio diário (CMD), o coeficiente de digestibilidade aparente (CDA) dos nutrientes do feno de capim Coast cross e feij o guandu e avaliar o balan o de nitrogênio (BN) em ovinos. Foram utilizados dez ovinos machos, castrados, com peso médio de 27,50 kg, alojados em gaiolas para metabolismo, em delineamento inteiramente casualizado com dois tratamentos (T1 = 80% de feno de Coast cross + 20% de guandu e T2 = 60% de feno de Coast cross + 40% de guandu) e cinco repeti es por tratamento. Os tratamentos foram avaliados sob dois regimes alimentares (consumo voluntário e restrito). Os animais recebendo ra o do T2 apresentaram maior CMD (g/kg PV0,75) (p < 0,05) de matéria seca (MS), proteína bruta (PB), fibra bruta (FB), matéria organica (MO) e extrato n o nitrogenado (ENN), do que aqueles animais recebendo ra o do T1. O CDA da FB da ra o T2 foi maior (p < 0,05) do que o da ra o T1. O BN dos animais que receberam 40% de guandu (13,15g N/ dia) foi superior aos daqueles que receberam 20% desta leguminosa (10,29g N/dia). Conclui-se que o feij o guandu pode ser utilizado como fonte protéica na alimenta o de ruminantes, pos
Dormência em sementes de guandu (Cajanus cajan (L.) Millsp)
Godoy, Rodolfo;Souza, Francisco Humberto Dübbern de;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000900004
Abstract: an experiment was conducted to study seed dormancy (hardseedness) in seventeen genetic lines and three commercial cultivars of pigeon pea. the seeds were hand-harvested, hand-shelled, and stored in paper bags in a chamber with 10°c and 25% air relative humidity. four replications of fifty-seed samples were put to germinate in moist paper rolls at 30oc, after one, two, three, four, five, nine, twelve and fifteen months of storage. no hard seeds were observed among eight lines and the three commercial cultivars. among these lines, g58-95 had low storage potential, quickly losing germination percentage. line g184-97 presented low percentage of hard seeds, lines g3-94, g6-95 and g124-95 kept the initial percentage, g101-97, g127-97, g154-95 and g167-97 had the percentage of hard seeds increased from one to nine months of storage, and percentage of hard seeds of line g27-94, constantly decreased. it was concluded that pigeon pea genotypes vary amply among themselves in terms of hard seed production potential and that satisfactory germination of its seed lots may require artificial chemical or mechanical scarification.
Allelopathic potential of Sesbania grandiflora Pers. on germination of Cajanus cajan Millsp. (Redgram) varieties
Chinnappan Alagesaboopathi * , Mahalingam Deivanai
International Journal of Biosciences , 2011,
Abstract: In the present study, the leaf extracts of Sesbania grandiflora Pers. showed inhibitory effects on seed germination, plumule length, radicle length, fresh and dry weight in redgram (Cajanus cajan Millsp. var. Vamban 2 and Cajanus cajan var. Vamban 3). The allelopathic effect of leaf extracts of S. grandifloradecreased the seed germination of Cajanus cajan var. Vamban 2 and var.Vamban 3 with increase of extracts concentration. The extracts also inhibited the plumule and radicle length of Cajanus cajan var. Vamban 2 and var. Vamban 3 seedlings with increase of S. grandiflora extracts concentration. The result revealed that the inhibitory and stimulatory effect may be due to the presence of these allelochemicals like sterols, saponins, phenols and tannins etc., in the aqueous leaf extracts of S. grandiflora from the present investigation.
Caracteriza??o de linhagens puras selecionadas de guandu (Cajanus cajan (L.) Millsp) (1)
Godoy, Rodolfo;Batista, Luiz Alberto Rocha;Souza, Francisco H. Dübbern de;Primavesi, Ana Candida;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000300006
Abstract: the purpose of this work was to characterize morphologically seventeen previously selected pigeon-pea lines that went, after selection, through processes of self pollination, selection and multiplication, to obtain pure lines. it also had the objectives of checking the efficiency of the descriptors and describing its vegetative cycle. it was possible to perform the description and to conclude that the seventeen lines have distinct characteristics and can easily be identified by these traits. the used descriptors could properly perform this task and it was concluded that they can be simplified. the seeds of the commercial lines used in this work had mechanical mixture.
Avalia??o agron?mica de linhagens selecionadas de guandu (Cajanus cajan (L.) Millsp)
Godoy, Rodolfo;Batista, Luiz Alberto Rocha;Santos, Patrícia Menezes;Souza, Francisco Humberto Dübbern de;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000100002
Abstract: with the purpose of re-evaluating seventeen pigeon-pea lines originated from accessions previously selected for favorable agronomic characteristics, experiments were installed in five locations of the state of s?o paulo. the confirmation of those characteristics was necessary because the original accessions presented various degrees of mechanical mixtures and segregation and were submitted to purification process in pollination controlled conditions. in those trials, the lines were cut in several occasions to evaluate forage yield. each time, it was determined the number of plants in each parcel and its average height. also it was determined their crude protein and tannins contents. among the tested lines, g58-95 e g127-97 confirmed to have low plants, g94, g167-97 and g29b-94, confirmed to offer good forage yields, while line g146-97 presented good initial forage yields.
New microsatellite markers for pigeonpea (cajanus cajan (L.) millsp.)
DA Odeny, Jayashree B, C Gebhardt, J Crouch
BMC Research Notes , 2009, DOI: 10.1186/1756-0500-2-35
Abstract: Primers were designed for 113 pigeonpea genomic SSRs, 73 of which amplified interpretable bands. Thirty-five of the primers revealed polymorphism among 24 pigeonpea breeding lines. The number of alleles detected ranged from 2 to 6 with a total of 110 alleles and an average of 3.1 alleles per locus. GT/CA and GAA class of repeats were the most abundant di-nucleotide and tri-nucleotide repeats respectively. Additionally, 220 soybean primers were tested in pigeonpea, 39 of which amplified interpretable bands.Despite the observed morphological diversity, there is little genetic diversity within cultivated pigeonpea as revealed by the developed microsatellites. Although some of the tested soybean microsatellites may be transferable to pigeonpea, lack of useful polymorphism may hinder their full use. A robust set of markers will still have to be developed for pigeonpea genome if molecular breeding is to be achieved.The increasing concern of the effect of global climate change and its likely impact on agriculture has stimulated scientists to search for crops that can withstand extreme environmental conditions. Among legumes, pigeonpea {Cajanus cajan (L.) Millspaugh} (2n = 22) has attracted attention as being both drought-tolerant [1] and highly nutritious [2]. Extensive morphological variation within the genus Cajanus as a whole and in cultivated species in particular has always led to the assumption that there exists abundant genetic diversity within the cultivated species. To the contrary, molecular studies have reported extremely low levels of polymorphism within the cultivated species compared to its wild relatives [3,4]. Such findings suggest that efforts towards the development of a linkage map of pigeonpea should focus on the use of an interspecific cross, and the development of a substantially high number of markers. We report the development of new 36 polymorphic simple sequence repeat (SSR) markers that will be an asset in characterising and understanding the nat
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