Spelling suggestions: "subject:"4plants -- dffect off boron ono"" "subject:"4plants -- dffect off boron onn""
1 |
ROOT DEVELOPMENT OF STEM CUTTINGS IN SELECTED PLANT SPECIES AS INFLUENCED BY BORON, CALCIUM, AND 1H-INDOLE-BUTANOIC ACID (IBA).Livingston, Margaret. January 1985 (has links)
No description available.
|
2 |
Genotypic variation in oilseed rape to low boron nutrition and the mechanism of boron efficiencyStangoulis, James Constantine Roy. January 1998 (has links) (PDF)
Bibliography: leaves 132-159. Boron efficiency in oilseed rape (Brassica napua L. and B. juncea L.) was investigated in a wide range of genotypes. Using a solution culture screening of 10 day old seedlings, root length best described shoot growth response, and was used to characterise a total of 65 genotypes. Varieties and breeders lines tolerant of B-deficient growing conditions were identified, and the screening process validated through field trials. B responses in plants sampled at the 'green bud' stage indicated that vegetative growth is important in B efficiency. Studies were conducted to investigate the mechanism of B efficiency in oilseed rape. Results suggest no association between B efficiency and the capacity to acidify the root rhizosphere, or an increased translocation of B from root to shoot. Boron retranslocation was also studied as a mechanism of B efficiency.
|
3 |
Genotypic variation in oilseed rape to low boron nutrition and the mechanism of boron efficiency / by James Constantine Roy Stangoulis.Stangoulis, James Constantine Roy January 1998 (has links)
Bibliography: leaves 132-159. / xv, 159 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Boron efficiency in oilseed rape (Brassica napua L. and B. juncea L.) was investigated in a wide range of genotypes. Using a solution culture screening of 10 day old seedlings, root length best described shoot growth response, and was used to characterise a total of 65 genotypes. Varieties and breeders lines tolerant of B-deficient growing conditions were identified, and the screening process validated through field trials. B responses in plants sampled at the 'green bud' stage indicated that vegetative growth is important in B efficiency. Studies were conducted to investigate the mechanism of B efficiency in oilseed rape. Results suggest no association between B efficiency and the capacity to acidify the root rhizosphere, or an increased translocation of B from root to shoot. Boron retranslocation was also studied as a mechanism of B efficiency. / Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1999?
|
4 |
Genotypic variation in oilseed rape to low boron nutrition and the mechanism of boron efficiency / by James Constantine Roy Stangoulis.Stangoulis, James Constantine Roy January 1998 (has links)
Bibliography: leaves 132-159. / xv, 159 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Boron efficiency in oilseed rape (Brassica napua L. and B. juncea L.) was investigated in a wide range of genotypes. Using a solution culture screening of 10 day old seedlings, root length best described shoot growth response, and was used to characterise a total of 65 genotypes. Varieties and breeders lines tolerant of B-deficient growing conditions were identified, and the screening process validated through field trials. B responses in plants sampled at the 'green bud' stage indicated that vegetative growth is important in B efficiency. Studies were conducted to investigate the mechanism of B efficiency in oilseed rape. Results suggest no association between B efficiency and the capacity to acidify the root rhizosphere, or an increased translocation of B from root to shoot. Boron retranslocation was also studied as a mechanism of B efficiency. / Thesis (Ph.D.)--University of Adelaide, Dept. of Plant Science, 1999?
|
5 |
Genotypic variation in the morphological and physiological response to boron toxicity in barley (Hordeum vulgare L.) and weed species / Eun-Young Choi.Choi, Eun-Young January 2004 (has links)
"June 2004." / Bibliography: leaves 135-159. / xi, 159 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Studies the mechanism underlying the morphological responses of boron- tolerance in plants by observing root and shoot responses to varied levels of subsoil boron in 2 barley varieties and 3 weed species common to agricultural areas of South Australia. Hypothesises that 4 mechanisms of boron-tolerance exist: 1. a physical barrier at xylem loading that also, 2., may include an efflux system; 3. enhanced sugar levels in shoot and root and 4, maintaining or increasing root biomass in the upper soil depths where the concentrations of boron are not toxic. / Thesis (Ph.D.)--University of Adelaide, School of Earth and Environmental Sciences, Discipline of Soil and Land Systems, 2004
|
6 |
Effect of boron on seven vegetable crops grown on two soil typesOneida, Kelly Ann 12 March 1993 (has links)
Boron deficiency or toxicity can reduce yield and
quality of vegetables. Seven vegetable crops, varying from
low to high boron requirements were grown in field plots at
Corvallis in 1987. Leaf-B and yield components of green
bean, cucumber, potato, carrot, tomato, broccoli and table
beet were examined under conditions of fall or spring soil
applied B at a 5 kg/ha rate on two soil types. Soil tests
on control plots indicated B levels of .39 mg/kg and .20
mg/kg in the top 23 cm of soil in the silty clay loam and
sandy loam soil, respectively. Fall or spring application
of B increased soil B levels in the top 23 cm on the silty
clay loam soil to .68 mg/kg and .37 mg/kg, and on the sandy
loam soil to .81 mg/kg and .42 mg/kg, respectively.
Boron application had no effect on yield or yield
components except in green beans where spring applied B on
the sandy loam reduced percent of premium grade pods (sieve
sizes 1-4). Leaf-B levels were not affected in cucumber,
carrot, or tomato on either soil. Boron application on
both soils had a significant effect on leaf-B levels in
bean, broccoli and table beet. Potato leaf-B was
significantly affected only on the sandy loam soil. / Graduation date: 1993
|
7 |
SNPs (Single Nucleotide Polymorphisms) em genes relacionados a absorção e translocação de Boro em EucalyptusOtto, Julio Cezar Santos [UNESP] 16 August 2012 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:32:14Z (GMT). No. of bitstreams: 0
Previous issue date: 2012-08-16Bitstream added on 2014-06-13T20:43:00Z : No. of bitstreams: 1
otto_jcs_dr_botib.pdf: 560145 bytes, checksum: 1e3798a7bac3b3ad5d2b4cd9e8c709a3 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / A expansão da atividade florestal no Brasil tem levado a exploração cada vez maior de solos considerados pobres do ponto de vista nutricional. A necessidade de adubações de correção e/ou manutenção envolve considerável custo de produção, o qual é incorporado ao custo final do produto. Os relatos de deficiências do micronutriente Boro (B) nestas situações têm levado a realização de muitos trabalhos com o objetivo de conhecer melhor os mecanismos envolvidos na absorção e retranslocação deste nutriente, assim como a avaliação de materiais que possam apresentar variabilidade genética quanto à resposta a sua deficiência. O grupo CAGEN em parceria com a empresa Fibria desenvolveu este projeto que visa a busca de SNPs em genes relacionados à absorção e translocação de B. em Eucalyptus. Como resultado da procura de SNPs, nos genes BOR1 e Sorbitol dehydrogenase foram encontrados um total de 54 SNPs sendo que, no gene BOR1, foi localizado 35 SNPs, e destes, 16 foram encontrados em exons e 19 em introns. Distribuídos da seguinte forma, 13 no “primer” B9 e destes dois em exons, 11 no “primer” B10 com sete localizados em exons e 11 encontrados no “primer” B11 com sete deles em exons, das mutações encontradas no gene BOR1, 69% ou 24 do total de 35 SNPs foram substituições por transição e 31% ou 11 dos 35 foram substituições por transversão. Dos 16 SNPs encontrados em exons, dois deles foram encontrados no “primer” B9, sete no “primer” B10 e sete no “primer” B11. Quanto a classificação das mutações em sinônimas e não sinônimas, dos 16 SNPs, 12 (75%) apresentaram mutações sinônimas e quatro (25%) apresentaram mutações não sinônimas, destas três ocorreram nos SPNs encontrados no primer B10 e uma no primer B11. Como resultado da procura de SNPs no gene da Sorbitol dehydrogenase, foi... / The Brazil forestry expansion has increased the poor nutritional soils exploitation. The need for fertilizers correction and / or maintenance involves considerable production costs, which is incorporated into the final product price. The reports about boron (B) micronutrient deficiencies in these situations have led to realization of many works for better understand the mechanisms involved in nutrients uptake and retranslocation, as well as the materials evaluation that may present genetic variability for response to their disability. CAGEN group in partnership with Fibria Company idealized this project for search SNPs in genes related to Boron absorption and translocation in Eucalyptus. On gene BOR1, was found 35 SNPs of which, 16 were found in exons and 19 in introns, of which, 13 in B9 primer with two of these in two exons, 11 in B10 primer with seven of these located in exons and 11 found in B11 primer with seven of them in exons. From gene mutations found in BOR1, 69% or 24 SNPs were transitional substitutions and 31% or 11 were transversion substitutions. Of the 16 SNPs found in exons, two of them were found in B9 primer, seven in B10 primer and seven in B11 primer. Mutations were classified as synonymous and non-synonymous, being that of 16 SNPs, 12 (75%) had synonymous mutations and four (25%) had non-synonymous mutations, in these, three occurred in SPNs found in B10 and one in B11 primer. From gene mutations found in sorbitol dehydrogenase, was found 19 SNPs, of these, seven were found in exons, 10 in introns and two in UTRs regions, one at 3' UTR and one another at 5' UTR. Their distribution was, eight in B1 primer and, of these, one in a 3' UTR region, five in exons and two in introns. In B2 primer were found 11 SNPs, two being located in exons, eight in introns and one in 5' UTR. Of the seven SNPs found in... (Complete abstract click electronic access below)
|
8 |
SNPs (Single Nucleotide Polymorphisms) em genes relacionados a absorção e translocação de Boro em Eucalyptus /Otto, Julio Cezar Santos. January 2012 (has links)
Orientador: Celso Luís Marino / Banca: Douglas Silva Domingues / Banca: Edson Seizo Mori / Banca: Mario Luiz Teixeira de Moraes / Banca: Adriana Pinto Wasko / Resumo: A expansão da atividade florestal no Brasil tem levado a exploração cada vez maior de solos considerados pobres do ponto de vista nutricional. A necessidade de adubações de correção e/ou manutenção envolve considerável custo de produção, o qual é incorporado ao custo final do produto. Os relatos de deficiências do micronutriente Boro (B) nestas situações têm levado a realização de muitos trabalhos com o objetivo de conhecer melhor os mecanismos envolvidos na absorção e retranslocação deste nutriente, assim como a avaliação de materiais que possam apresentar variabilidade genética quanto à resposta a sua deficiência. O grupo CAGEN em parceria com a empresa Fibria desenvolveu este projeto que visa a busca de SNPs em genes relacionados à absorção e translocação de B. em Eucalyptus. Como resultado da procura de SNPs, nos genes BOR1 e Sorbitol dehydrogenase foram encontrados um total de 54 SNPs sendo que, no gene BOR1, foi localizado 35 SNPs, e destes, 16 foram encontrados em exons e 19 em introns. Distribuídos da seguinte forma, 13 no "primer" B9 e destes dois em exons, 11 no "primer" B10 com sete localizados em exons e 11 encontrados no "primer" B11 com sete deles em exons, das mutações encontradas no gene BOR1, 69% ou 24 do total de 35 SNPs foram substituições por transição e 31% ou 11 dos 35 foram substituições por transversão. Dos 16 SNPs encontrados em exons, dois deles foram encontrados no "primer" B9, sete no "primer" B10 e sete no "primer" B11. Quanto a classificação das mutações em sinônimas e não sinônimas, dos 16 SNPs, 12 (75%) apresentaram mutações sinônimas e quatro (25%) apresentaram mutações não sinônimas, destas três ocorreram nos SPNs encontrados no primer B10 e uma no "primer" B11. Como resultado da procura de SNPs no gene da Sorbitol dehydrogenase, foi... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The Brazil forestry expansion has increased the poor nutritional soils exploitation. The need for fertilizers correction and / or maintenance involves considerable production costs, which is incorporated into the final product price. The reports about boron (B) micronutrient deficiencies in these situations have led to realization of many works for better understand the mechanisms involved in nutrients uptake and retranslocation, as well as the materials evaluation that may present genetic variability for response to their disability. CAGEN group in partnership with Fibria Company idealized this project for search SNPs in genes related to Boron absorption and translocation in Eucalyptus. On gene BOR1, was found 35 SNPs of which, 16 were found in exons and 19 in introns, of which, 13 in B9 primer with two of these in two exons, 11 in B10 primer with seven of these located in exons and 11 found in B11 primer with seven of them in exons. From gene mutations found in BOR1, 69% or 24 SNPs were transitional substitutions and 31% or 11 were transversion substitutions. Of the 16 SNPs found in exons, two of them were found in B9 primer, seven in B10 primer and seven in B11 primer. Mutations were classified as synonymous and non-synonymous, being that of 16 SNPs, 12 (75%) had synonymous mutations and four (25%) had non-synonymous mutations, in these, three occurred in SPNs found in B10 and one in B11 primer. From gene mutations found in sorbitol dehydrogenase, was found 19 SNPs, of these, seven were found in exons, 10 in introns and two in UTRs regions, one at 3' UTR and one another at 5' UTR. Their distribution was, eight in B1 primer and, of these, one in a 3' UTR region, five in exons and two in introns. In B2 primer were found 11 SNPs, two being located in exons, eight in introns and one in 5' UTR. Of the seven SNPs found in... (Complete abstract click electronic access below) / Doutor
|
9 |
Boro em cana-de-açúcar cultivada em solução nutritiva/Martello, Jorge Martinelli. January 2016 (has links)
Orientador: Carlos Alexandre Costa Crusciol / Banca: Adalton Mazetti Fernandes / Banca: Dirceu Maximino Fernandes / Resumo: Recentemente no Brasil, a deficiência de boro têm sido constatada tanto em regiões tradicionais mas, principalmente, em regiões de expansão da cultura da cana-de-açúcar para solos arenosos e de baixa fertilidade. Relacionado a isso, doenças como estria vermelha (Bactéria - Acidovorax avenae), além de redução qualitativa e quantitativa da produtividade dos canaviais, têm sido observados. Portanto, estudos mais detalhados que revelem com maior clareza as particularidades deste micronutriente para a cultura se fazem necessários. Assim, objetivou-se com o presente trabalho avaliar o efeito da disponibilidade de boro em solução nutritiva sobre o desenvolvimento radicular e da parte aérea e, ... / Abstract: Recently in Brazil, boron deficiency has been verified both in traditional, but mainly in expanding regions of the sugarcane crop to areas with sandy and low fertility soils. Associated with that, diseases like red stripe (Bacteria - Acidovorax avenae), as well as, qualitative and quantitative reduction in the productivity of sugarcane plants, have been observed. Therefore, more detailed studies, in order to further clarify special features of this micronutrient for the crop, become necessary. Thus, the aim of the present study was to evaluate the effect of boron availability in nutrient solution, on the root and shoot growth, and also on the nutrient uptake efficiency and concentration in ... / Mestre
|
10 |
Boron deficiency in the bean rootThomas, Heather G. January 1965 (has links)
No description available.
|
Page generated in 0.1179 seconds