ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • zinc deficiency  (4)
  • barley  (3)
  • zinc uptake  (3)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Effect of pH on Mn absorption by barley genotypes in a chelate-buffered nutrient solution (1993)
    Springer
    Plant and soil 155-156 (1993), S. 437-440 
    Details
    ISSN: 1573-5036
    Keywords: absorption ; barley ; chelate ; genotype ; HEDTA ; MES ; Mn ; pH ; Tris
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A new chelate-buffering technique was used to investigate the effect of pH (6.00, 6.85 and 7.70) on manganese (Mn) absorption from nutrient solution by three genotypes of barley plants differeing in Mn efficiency. The nutrient composition was adjusted such that the calculated activities of Mn2+, Zn2+, Cu2+ and Ni2+ were similar in each pH, thus eliminating any effect of the pH treatment on Mn2+ supply. Increasing pH from 6.00 to 7.70 increased the rate of Mn absorption and decreased the external Mn requirement for optimal growth rate. With increasing pH, Mn concentrations in roots rose markedly, and were higher than those in shoots at pH 7.70. Genotypic differences in Mn concentration of roots appeared only at higher pH. We suggest that higher Mn concentration in roots of inefficient plants may be related to Mn immobilisation in roots, and this may be a factor in the mechanism of Mn efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00025077
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Selecting zinc-efficient cereal genotypes for soils of low zinc status (1992)
    Springer
    Plant and soil 146 (1992), S. 241-250 
    Details
    ISSN: 1573-5036
    Keywords: Avena sativa ; genotypic differences ; grain zinc ; Hordeum vulgare ; Triticum aestivum ; zinc concentration ; zinc deficiency ; zinc uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Deficiencies of zinc are well known in all cereals and cereal-growing countries. From physiological evidence reported elsewhere, it would appear that a critical level for zinc is required in the soil before roots will either grow into it or function effectively; it is likely the requirement is frequently not met in deep sandy, infertile profiles widespread in southern Australia. Because fertilizing subsoils is impractical, this paper presents arguments for breeding cereal varieties with root systems better able to mobilise zinc from soil sources of low availability. Other agronomic arguments are presented in support of breeding for zinc efficiency. Significant genetic variation for this character is described for wheat, barley and oats. Linkage to other efficiency traits (e.g., manganese) is poor suggesting independent mechanisms and genetic control not linked to gross root system geometry. Zinc efficiency traits for sandy and clayey soils appear to be genetically different. Zinc-efficient genotypes absorb more zinc from deficient soils, produce more dry matter and more grain yield but do not necessarily have the highest zinc concentrations in tissue or grain. Although high grain zinc concentration also appears to be under genetic control, it is not tightly linked to agronomic zinc efficiency traits and may have to be selected for independently. High grain zinc is considered a desirable quality factor which not only contributes to the seedling vigour of the next generation but could increase the nutritional value of the grain in areas where a high dependence on grains for food may result in zinc deficiency in humans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00012018
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Pot size affects expression of Mn efficiency in barley (1996)
    Springer
    Plant and soil 178 (1996), S. 205-208 
    Details
    ISSN: 1573-5036
    Keywords: barley ; genotype ; Mn concentration ; Mn efficiency ; pot size ; screening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Mn efficiency is defined here as an ability of a genotype to grow and yield well in a soil which is limiting in available Mn for a standard genotype (Graham, 1984). Screening for Mn efficiency in soil-based pot testing had been producing inconsistent results, and thus improvement of pot screening became an objective. One possible factor, pot size was examined as the cause, using two sizes of pot. In large pots, the expectation of higher dry matter and shoot Mn concentration in a Mn-efficient genotype compared to a Mn-inefficient genotype was realised over a wide range of Mn supply, whereas in small pots, the genotypic differences were expressed at only one, low rate of Mn supply (10 mg kg soil-1). Plants in the small pots strongly responded to root restriction by decreasing yields and increasing root/shoot ratios and Mn concentrations of shoots. The critical value of Mn concentration for shoot growth was not affected by the small pots, but the Mn mobilization by plants might be affected in the small pots. The practical outcome of these results is that using an adequate size of pot and measuring the Mn concentration of shoots, soil-based pot screening for Mn efficiency can be improved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011584
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Susceptibility of zinc-deficient wheat plants to colonization byFusarium graminearum Schw. Group 1 (1988)
    Springer
    Plant and soil 112 (1988), S. 261-266 
    Details
    ISSN: 1573-5036
    Keywords: crown rot ; Fusarium graminearum ; interactions ; wheat ; zinc deficiency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Wheat plants were grown at three levels of zinc nutrition in potted soil under controlled conditions. The surface soil in half of the pots was inoculated with a thin layer of milled chaff colonized byFusarium graminearum Group 1. Forty days after sowing, the plants were assessed for dry matter production and the extent of colonization by the pathogen. The concentration of zinc in the plant tissues was also determined. The zinc status of the plants ranged from severe deficiency through subclinical deficiency to sufficiency. The extent of colonization above the point of infection was decreased significantly by increasing the level of zinc supply. However, colonization of the seminal or secondary roots was not affected by zinc supply, nor was the incidence of infected plants. The unidirectional effect on resistance suggests that zinc has modified the contribution of the xylem flux to the upward spread of the pathogen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02140004
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Importance of seed Zn content for wheat growth on Zn-deficient soil (1995)
    Springer
    Plant and soil 173 (1995), S. 267-274 
    Details
    ISSN: 1573-5036
    Keywords: genotype ; grain yield ; harvest index ; seed nutrient content ; Triticum aestivum L. ; zinc deficiency ; zinc toxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Two wheat (Triticum aestivum L.) genotypes (Zn-efficient Excalibur and Zn-inefficient Gatcher) were grown from low-Zn (around 250 ng Zn/seed) and high-Zn seed (around 700 ng Zn/seed) in a Zn-deficient siliceous sand fertilised with 0, 0.05, 0.2, 0.8 or 3.2 mg Zn kg-1 soil. At maturity, plants derived from the high-Zn seed had bigger grains and produced more grains than plants grown from the low-Zn seed when fertilised with nil Zn. Plants grown from high-Zn seed produced more grain dry matter per unit of Zn absorbed by the above-ground parts, transported a larger proportion of absorbed Zn to the grain, and approached the maximum harvest index with the fertilisation rate of 0.05 mg Zn kg-1 compared to 0.2 mg Zn kg-1 soil required for plants derived from the low-Zn seed. The Zn-efficient cv. Excalibuir had greater fertiliser efficiency when fertilised with 0.05 mg Zn kg-1 soil and a greater harvest index at nil Zn treatment compared to the Zn-inefficient cv. Gatcher. Zn-deficient plants produced seed with higher concentrations of all inorganic nutrients determined except Zn. There was a positive relationship between grain dry weight and Zn concentrations in youngest expanded blades sampled at 6 weeks of growth. It is concluded that crops grown from seed containing higher Zn content have a distinct advantage which culminates in greater yield when grown in soils of low Zn status.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011464
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Interaction between zinc nutritional status of cereals and Rhizoctonia root rot severity (1993)
    Springer
    Plant and soil 153 (1993), S. 207-214 
    Details
    ISSN: 1573-5036
    Keywords: barley ; cereal root rot ; Rhizoctonia solani ; wheat ; Zn nutrition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The severity of a root rot disease of cereals, caused by Rhizoctonia solani Kühn AG8, was inversely correlated to the Zn status of plants in field studies in 1989 and 1990. In 1989, a preliminary survey was conducted in a farmer's field in South Australia where Zn deficiency and disease were both widespread. Zn concentration in ‘Spear’ wheat plants at the 3-leaf to early tillering stage was negatively correlated with severity of the disease. For the elevent elements analysed, a correlation matrix showed that Zn had the highest, and only significant (R2=0.52**) association with disease. The effect of Zn applications and their residual value on disease severity was further studied in a long-term field experiment in 1989 and 1990 to which Zn had been applied in 1986. There was a decrease in the area of Rhizoctonia bare patch as Zn rate was increased, a result consistent with the field survey results; the recommended rate of 2.5 kg Zn ha−1 reduced the area affected by bare patch from 42% to 21% of the total crop area compared with no Zn application, overcame Zn deficiency and increased grain yield from 1.1 to 2.8 t ha−1. In 1990, fresh Zn application treatments were applied to trial plots designed for this purpose, in order to compare the response with the older Zn treatments applied in 1986. The areas of bare patch in the older Zn treatments were approximately 5% greater than those in the fresh Zn treatments. The results are consistent with the hypothesis that Zn deficient plants are more susceptible to root rot caused by R. solani. Testing this hypothesis is the subject of a companion paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00012993
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Zinc efficiency of oilseed rape (t Brassica napus and t B. juncea) genotypes (1997)
    Springer
    Plant and soil 191 (1997), S. 123-132 
    Details
    ISSN: 1573-5036
    Keywords: canola ; mustard ; oilseed rape ; root ; zinc deficiency ; zincefficiency ; zinc uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Twenty five genotypes of oilseed rape (canola and mustard) were tested under varied supply of Zn (+Zn: 2 mg kg−1 soil, -Zn: no Zn added) in two pot experiments in soil culture to determine the genotypic variation in tolerance to the Zn-deficient conditions, that is, to identify the Zn-efficient genotypes. On the basis of performance of genotypes in pot experiments, ten genotypes were tested in 1995 for their performance under varied supply of Zn (+Zn: 3.5 kg ha−1, -Zn: no Zn added) on a Zn-deficient field in South Australia. Zn efficiency (ratio of shoot dry matter in -Zn to shoot dry matter in +Zn treatment and expressed in percentage) in pot Experiment 1 varied from 35% for 92-13 to 74% for Siren. Narendra, Dunkeld, Barossa, Oscar and Xinza 2 performed well under -Zn treatment. Zn efficiency in Experiment 2 varied from 32% for Wuyou 1 to 62% for Pusa Bold. Pusa Bold and CSIRO-1(mustard genotypes) were the most efficient in terms of dry matter production among all the oilseed rape genotypes tested. Root dry matter accumulation was significantly higher in Zn-efficient genotypes. Zn efficiency (ratio of seed yield in -Zn to seed yield in +Zn and expressed in percentage) in field experiment varied from 62% for Huashang 2 to 76% for Dunkeld. With few exceptions, the ranking of genotypes in pot and field experiments indicates similarity in their response to Zn deficiency. There looks to be genetic control over Zn concentration in tissues. Zn-efficient genotypes had lower Zn concentration in roots and higher Zn concentration in youngest fully opened leaf blades, indicating a better transport of Zn. This, together with a higher Zn uptake, appears to be the basis of expression of Zn efficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004289422276
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Seed zinc content influences early vegetative growth and zinc uptake in oilseed rape (Brassica napus and Brassica juncea) genotypes on zinc-deficient soil (1997)
    Springer
    Plant and soil 192 (1997), S. 191-197 
    Details
    ISSN: 1573-5036
    Keywords: chlorophyll content ; dry matter ; leaf area ; oilseed rape ; seed Zn content ; zinc uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Low-Zn seed (around 80 ng Zn per seed) and high-Zn seed (around 160 ng Zn per seed) of Zhongyou 821 (a traditional Brassica napus genotype from China found to be Zn-inefficient in our previous experiments), Narendra (Zn-efficient B. napus genotype from Australia) and CSIRO-1 (a Zn-efficient B. juncea genotype from Australia) oilseed rape genotypes were sown in pots containing Zn-deficient siliceous sand fertilized with low Zn supply (0.05 mg Zn kg−1 soil) or high Zn supply (2.0 mg Zn kg−1 soil) in a controlled environment. After six weeks, plants derived from the high-Zn seed had better seedling vigour, increased root and shoot growth, more leaf area and chlorophyll concentration in fresh leaf, and higher Zn uptake in shoot compared to those from low-Zn seed at low Zn supply; the impact of high-Zn seed was more marked in Zhongyou 821 compared with CSIRO-1 and Narendra. The influence of high-Zn seed was dissipated at high Zn supply. CSIRO-1 was superior in terms of shoot dry matter production and Zn uptake in shoots at low Zn supply. The results demonstrate that although oilseed rape has very small seeds (about 3 mg per seed weight) compared with wheat (30 mg per seed weight), Zn reserves present in this very small seed still have a strong impact on early vegetative growth as well as on Zn uptake of plants in Zn-deficient soils. The results suggest that sowing high-Zn seed coupled with growing Zn-efficient genotypes may help in sustaining the production of oilseed rape in Zn-deficient soils, and this has implications for improved seed technology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004216111647
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...