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  • 1
    Electronic Resource
    Electronic Resource
    Boron efficiency in oilseed rape: I. Genotypic variation demonstrated in field and pot grown Brassica napus L. and Brassica juncea L. (2000)
    Springer
    Plant and soil 225 (2000), S. 243-251 
    Details
    ISSN: 1573-5036
    Keywords: boron ; canola ; efficiency ; micronutrient ; mustard ; oilseed rape
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Boron (B) efficiency of oilseed rape (Brassica napus) and mustard (B. juncea) genotypes was determined on a low B soil at Mt. Compass, South Australia. B efficiency was observed in oilseed rape genotypes, Zhongyou 821, Dunkeld and Zheyou 2, and in mustard genotypes Pusa Bold and CSIRO 6. Genotypes grown in the field were also grown under glass-house conditions, in pots filled with pre-washed sand extracted from the Mt. Compass field site. Two B treatments, one B adequate (0.25 mg B kg−1 soil) and one B deficient (imposed by omission) were used to indicate whether vegetative response to B could predict final yield response and provide a more convenient selection criterion for identifying B-efficient germplasm. Vegetative response of 35 d old (D35) genotypes grown in pot culture closely reflected field response, indicating the expression of B efficiency traits in early growth, and its potential use in selection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026593528256
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Good news and bad news: Search from unknown wage offer distributions (2000)
    Springer
    Experimental economics 2 (2000), S. 197-225 
    Details
    ISSN: 1573-6938
    Keywords: job search ; unknown distributions ; reservation wage property ; controlled experiments ; C91 ; D83 ; J64
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract The largest market in national economies is the labor market. Labor market contracting is characterized by job search, often from unknown wage offer distributions. This paper reports experimental tests of finite horizon models of job search in which the wage offer distribution is unknown. Theoretically-optimal search from an unknown wage offer distribution can have the seemingly paradoxical property that some offers will be accepted that are lower than other offers that will be rejected in the same period of the search horizon. Thus the reservation wage property (or lowest acceptable wage path) may not exist. This can occur because an offer that is a priori relatively high (“good news”) can imply that it is highly probable that search is from a favorable distribution, and such an offer can look unattractive when it is an a posteriori relatively low offer from a favorable distribution (“bad news”). This paper reports results from experimental treatments for search from unknown distributions in which the reservation wage property does exist and treatments in which it does not exist. We find that the consistency of search behavior with search theory reported in earlier papers is robust to the presence or absence of the reservation wage property and to whether the draws come from known or unknown distributions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01669196
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Boron efficiency in oilseed rape: II. Development of a rapid lab-based screening technique (2000)
    Springer
    Plant and soil 225 (2000), S. 253-261 
    Details
    ISSN: 1573-5036
    Keywords: boron ; efficiency ; genotypic variation ; micronutrient ; oilseed rape
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The level of genotypic variation in tolerance to low boron (B) supply was investigated in solution culture grown, 10 day old (D10) oilseed rape (Brassica napus L.) plants, by using a rapid screening technique whereby root length, root elongation rate and total root dry weight were used to indicate plant response to B. Root length proved more reliable in determining genotype responses, and was used to characterise a total of 61 genotypes, of which Huashuang 2, Nangchang rape, Huashuang 1 and Zhongyou 821, and to a lesser extent, Zheyou 2, Dunkeld, Xinza 2, Nangjin 2051, 92-58, 92-13, and Awassa 115 exhibited some form of tolerance to low B supply. The genotypic rankings based on this early vegetative response corroborated with field based B-efficiency. The results demonstrate the expression of the B-efficiency mechanism in the early vegetative stages of plant growth, and establish the value of root length as a selection criterion for B-efficiency in oilseed rape.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026595012326
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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