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  • Articles  (15)
  • wheat  (15)
  • 1985-1989  (15)
  • 1950-1954
  • 1945-1949
  • 1985  (15)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (15)
  • Sociology
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  • Articles  (15)
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Keywords
Publisher
Years
  • 1985-1989  (15)
  • 1950-1954
  • 1945-1949
Year
Topic
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (15)
  • Sociology
  • Biology  (3)
  • Medicine  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Effect of P fertilizer on alleviating chloride toxicity in wheat (1985)
    Springer
    Nutrient cycling in agroecosystems 6 (1985), S. 171-176 
    Details
    ISSN: 1573-0867
    Keywords: Chloride ; phosphorus ; salinity ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A pot study with four levels each P (control, 6.5, 13.0, 19.5 mg kg−1) and Cl− in irrigation water (control, 30, 60, 90me l−1) was carried out to test Cl− and P interaction on wheat. It has been found that optimum P nutrition alleviates the toxic effect of excess Cl−. Highest P rate resulted in a significant yield increase upto a Cl− level of 60me l−1. Cl− depressed P content in the plant only at a Cl− level of 90me l−1, while P rates had no major impact on the Cl− concentration in the plant. Lower Cl− concentration at higher P rates are rather a dilution effect than an antagonistic one. With optimum P supply higher Cl− contents in the plants were tolerated than with a low P supply.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01051011
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on the potassium requirements of different crops (1985)
    Springer
    Nutrient cycling in agroecosystems 8 (1985), S. 91-96 
    Details
    ISSN: 1573-0867
    Keywords: chickpea ; Egyptian clover ; field experiments ; K uptake ; mustard ; wheat ; yield
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A field experiment on a potassium deficient Typic ustochrept soil of the University Farm at Pura, Kanpur compared the responses of wheat, chickpea, mustard and Egyptian clover to added potassium for two consecutive years commencing in 1979–80. All the crops responded to potassium fertilization. Sensitivity of various crops to potassium deficiency was in the order: Egyptian clover 〉 chickpea 〉 wheat 〉 mustard. Higher sensitivity of Egyptian clover and chickpea compared to wheat was in agreement with their comparatively high root cation exchange capacity. Mustard by contrast showed higher root cation exchange capacity and exhibited least potassium sensitivity because of its higher potassium utilization efficiency. Leaf K content and total uptake of potassium by all crops was increased by applying potassium upto the highest level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048910
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  • 3
    Electronic Resource
    Electronic Resource
    Methods and rates of application of Mn and its critical levels for wheat following rice on coarse textured soils (1985)
    Springer
    Nutrient cycling in agroecosystems 8 (1985), S. 173-178 
    Details
    ISSN: 1573-0867
    Keywords: critical limit of Mn ; highly permeable soils ; methods and rates of Mn ; Mn deficiency ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Two field experiments were conducted on Mn-deficient soils to evaluate the efficiency of rates, methods and time of MnSO4.H2 O application for wheat. Manganese sulphate was broadcast and mixed in soils at the rate of 5 to 50kg Mn ha−1 before seeding and 10 to 40 kg Mn ha−1 as top dress at 28 days — just before first irrigation. Three sprays of 1% MnSO4·H2O unneutralised solutions were applied, the first at 26 days — 2 days before first irrigation and the others afterward at weekly intervals. Both the methods caused a significant and marked increase in grain yield. Three foliar sprays were as effective as soil applications of 20 to 40 Kg Mn ha−1 before seeding. The difference in grain yield resulting from soil applications of Mn before seeding and applications at the first irrigation was not significant. The DTPA-Mn status of 20 fields, selected on the basis of varying degree of Mn deficiency, was related to grain yield (r = 0.77**). Also grain yield of all the experiments had a significant correlation with Mn content of grain (r = 0.55** to 0.82**) and straw (r = 0.77** to 0.82**). The critical limits calculated by statistical method were 1.25, 2.18 and 3.5 mg Mn kg−1 soil for severe deficiency, deficiency and latent deficiency respectively for wheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048900
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  • 4
    Electronic Resource
    Electronic Resource
    Retrospective assessment of environments in the determination of an objective strategy for the evaluation of the relative yield of wheat cultivars (1985)
    Springer
    Euphytica 34 (1985), S. 397-408 
    Details
    ISSN: 1573-5060
    Keywords: Tricticum aestivum ; wheat ; yield ; genotype x environment ; retrospective ; environments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The identification of relevant but diverse environments for the assessment of the relative performance of wheat cultivars was developed by using conventional and pattern analysis procedures. The utility of weighting environments on proximity to a hypothetical most frequently encountered environment, to improve the quality of the predictive inference of relative cultivar performance, was also assessed. There was an increase in the agreement of the relative yield of cultivars obtained in different years using this technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022935
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  • 5
    Electronic Resource
    Electronic Resource
    The physiology of variation in the time of ear emergence among wheat varieties from different regions of the world (1985)
    Springer
    Euphytica 34 (1985), S. 559-571 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; ear emergence ; number of leaves ; number of spikelets ; photoperiod ; vernalization ; geographical distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Differences in response to photoperiod and vernalization and genetic variation independent of photoperiod and vernalization (earliness per se), affecting time of ear emergence of wheat, were identified in controlled environment experiments with 33 varieties of diverse geographical origin. The results were compared with an analysis of time of ear emergence of 10409 T. aestivum accessions from the USDA Small Grain Collection grown from autumn sowings in Pendleton, Oregon, and spring sowings in Fargo, North Dakota. The effect of differences in photoperiod and vernalization sensitivity on time of ear emergence was similar to the effect of earliness per se, both under controlled environment conditions and in the field. Most of the accessions from low latitude regions reached ear emergence rapidly owing to their insensitivity to photoperiod and vernalization and earliness per se factors accelerating ear emergence. Lateness was common among accessions from Northern Europe, Afghanistan and Turkey, which was due to sensitivity to photoperiod and vernalization, and to earliness per se factors delaying ear emergence. The physiological basis of earliness per se is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022955
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  • 6
    Electronic Resource
    Electronic Resource
    Plant regeneration from immature inflorescence callus cultures of wheat, rye and triticale (1985)
    Springer
    Euphytica 34 (1985), S. 153-159 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Secale cereale ; rye ; Triticosecale ; callus culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Callus cultures were initiated from inflorescence explants of wheat, rye and triticale on MS medium supplemented with 2 mgl-1 2,4-D+5% CW or 2 mgl-1 2,4-D+0.5 mgl-1 BA. On transfer of the cultures to medium supplemented with 15% CW+0.2 mgl-1 NAA or 1 mgl-1 BA+0.1 mgl-1 IAA, shoot buds and embryoids were produced. Full fledged plantlets obtained on MS medium supplemented with NAA were transferred to the field. Cytological analysis showed the plants to be diploid. However, the regenerated plantlets were shorter, produced fewer tillers and had lower fertility compared to the control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022875
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  • 7
    Electronic Resource
    Electronic Resource
    A gene for hybrid necrosis in an inbred line of rye (Secale cereale L.) (1985)
    Springer
    Euphytica 34 (1985), S. 207-211 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; Secale cereale ; rye ; hybrid necrosis ; intergeneric cross
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary An inbred line of rye (Secale cereale L.) has been found to carry a gene for hybrid necrosis. This gene was detected in crosses with a highly crossable wheat (Triticum aestivum L.) genotype which carries the gene Ne2. This appears to be the first report of a gene for hybrid necrosis being present in the rye genome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022881
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  • 8
    Electronic Resource
    Electronic Resource
    Reciprocal monosomic analysis of frost resistance on chromosome 5A in wheat (1985)
    Springer
    Euphytica 34 (1985), S. 367-370 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; frost resistance ; chromosome 5A ; reciprocal monosomic analysis ; allelic variation ; substitution line
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary F2 monosomic analysis and the direct comparisons between aneuploid series from different varieties of wheat suggest the likelihood of allelic variation. It is impossible however, from these studies to prove unequivocally that allelic variation exists. Some effects can be due to chromosome dosage rather than allelic variation. This disadvantage was overcome by using reciprocal monosomic analysis to study the genetic control of frost resistance on chromosome 5A in wheat. Data support the previous results obtained by F2 monosomic and substitution analysis. The chromosome 5A has been shown to be the one which carries the major allelic differences that distinguish wheat varieties Chinese Spring, Rannyaya 12 and Mironovskaya 808 for frost resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022930
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  • 9
    Electronic Resource
    Electronic Resource
    A reciprocal F1 monosomic analysis of the genetic control of time of ear emergence, number of leaves and number of spikelets in wheat (Triticum aestivum L.) (1985)
    Springer
    Euphytica 34 (1985), S. 545-558 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; reciprocal F1 monosomics ; ear emergence ; number of leaves ; number of spikelets ; photoperiod ; vernalization ; growth rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A reciprocal F1 monosomic analysis of chromosomal differences between Spica and Bersée was carried out under controlled environment conditions. Chromosomes associated with differences in days to ear emergence, number of leaves and number of spikelets were identified. The results indicated that chromosome 2B of Spica carries a photoperiod insensitivity allele at the Ppd 2 locus. Both Spica and Bersée appear to have a vernalization insensitity allele at the Vrn 2 locus on chromosome 5B. On chromosome 3A, 4B, 4D and 6B factors were found with major effects on earliness per se, diffeences in ear emergence and number of spikelets which were independent of photoperiod and vernalization. The possibility that these factors influence growth rate is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022954
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  • 10
    Electronic Resource
    Electronic Resource
    The genetics of auricle colour of wheat (Triticum aestivum L.): A review (1985)
    Springer
    Euphytica 34 (1985), S. 233-236 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; auricle colour ; genetics ; instability of expression ; gene penetration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Only a few publications deal with the genetics of auricle colour of wheat. They report that red pigmentation is conditioned by one dominant gene, symbolized Ra. Ra is present in Egyptian local wheat cultivars. My own research showed the great instability of this character.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022914
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  • 11
    Electronic Resource
    Electronic Resource
    Clonal propagation of Triticum durum Desf. from immature embryos and shoot base explants (1985)
    Springer
    Euphytica 34 (1985), S. 273-277 
    Details
    ISSN: 1573-5060
    Keywords: Triticum durum ; wheat ; clonal propagation ; cytokinins ; shoot proliferation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Immature embryos from five durum wheat cultivars were grown on Murashige and Skoog medium supplemented with two concentrations of kinetin or 6-benzylaminopurine (BAP). The embryos cultured on the medium containing 5 mg/l of BAP proliferated several axillary shoots. Shoot base segments subcultured on the same medium gave more shoot proliferation. The shoots developed into ear-bearing plants. This technique could be used for clonal propagation of wheat.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022919
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  • 12
    Electronic Resource
    Electronic Resource
    Relationship among planted and harvested kernel weights and grain yield and protein percentage in winter wheat (1985)
    Springer
    Euphytica 34 (1985), S. 751-757 
    Details
    ISSN: 1573-5060
    Keywords: Trticum aestivum ; wheat ; gram yield ; grain protein ; seed quality ; yield components
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Wheat (Triticum aestivum L.) kernel weight is an important yield component and seed quality factor that appears to be declining with recent cultivar releases in the major U.S. wheat region. The objectives of experiments were to detmrmine the relationship between planted and harvested 1000-kernel weights and their effect on grain yield and grain protein percentage. Twelve popular hard red winter wheat cultivars were grown with recommended practices at 10 Kansas locations for three years. Rank correlation coefficients between kernel weights and grain yields and protein percentages were calculated. Correlations of planted and harvested kernel weights over all cultivars with grain yield were inconsistent, being positive for some locations and years and negative for other locations and years. Planted kernel weights and grain yields of individual cultivars were not related, but harvested kernel weights and grain yields were correlated positively for eight of the 12 cultivars. Harvested kernel weights and grain protein percentages frequently were correlated positively at individual locations, but always were correlated negatively for individual cumtivars. It was concluded that high stable harvested wheat kernel weight is important as a component of grain yield under a range of environments and that improving this trait would benefit all segments of the wheat industry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035413
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  • 13
    Electronic Resource
    Electronic Resource
    Changes in relative growth rate with plant ontogeny in spring wheat genotypes grown as isolated plants (1985)
    Springer
    Euphytica 34 (1985), S. 833-847 
    Details
    ISSN: 1573-5060
    Keywords: Triticum aestivum ; wheat ; growth analysis ; relative growth rate ; selection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary For a better insight in the effect of wide spacing on the outcome of plant selection in spring wheat, the growth of free-grown individual plants was followed in time for each of 12 cultivars. As time proceeded, the cultivar differences for per-plant weight showed progressively less relation with those for seedling weight. At anthesis, the genetic correlation with seedling weight was still about 0.80, but at final harvest it was only 0.06. This contrasted with the genetic correlation between seedling weight and final biomass in closely planted mixtures which was on the average 0.77. The outcome of selection of genotypes in isolation is therefore expected to deviate substantially from that of selection in densely planted segregating populations where the differences in initial size tend to be maintained in time. The ranking of the varieties grown in isolation changed in time because of differences in relative growth rate (RGR). The genetic variance of RGR decreased much less with time than RGR itself. Late-flowering varieties showed the higher RGR so that these varieties improved their position in the ranking in isolation. Special attention is paid to the methodology of plant growth analysis in variety experiments and in estimating means and variances of RGR.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035422
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  • 14
    Electronic Resource
    Electronic Resource
    Phosphate fertilization in intensive annual cropping with wheatgreen gram (or cowpea) — pearl millet (1985)
    Springer
    Nutrient cycling in agroecosystems 6 (1985), S. 219-224 
    Details
    ISSN: 1573-0867
    Keywords: cowpea ; green gram ; pearl millet ; phosphate ; residual effect ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract In a four year study on a wheat-green gram (or cowpea) — pearl millet intensive cropping system a total production of 9–10 tonnes of wheat equivalents per year removed 29–30kg P ha−1. If only 26 kg P ha−1 was used then total grain production as well as P uptake, was highest when all the P was applied to wheat. Only when amounts larger than 26 kg P ha−1 were applied was it justified to apply P to pearl millet and green gram (or cowpea). Productivity of the cropping system increased up to 58.5 kg P ha−1 and at this level two thirds of P was applied to wheat, while pearl millet and green gram or cowpea received the remaining one-third. A positive P balance in soil was observed only when 26 k P ha−1 yr−1 or more was applied. Pressure of growing population and per capita diminution or arable land has focussed attention on multiple cropping systems in many Asian countries [1, 2]. In North-Western India the cropping system changed from a single rainy (July–October) or winter (November–April) crop a year prior to the 1960's to two-crops-a-year (both a rainy season and winter crop) in the 1970.s and then in the late 1970's a third summer (May–June) crop was also included. Wheat — green gram (or cowpea) — pearl millet is such a three-crops-a-year multiple cropping system. Phosphate is the costliest major plant nutrient in India and farmers following multiple cropping systems are keen to know the way the phosphate should be apportioned to different crops in a cropping system particularly when small amounts of P are applied. Such information can come only from long-term P fertilization experiments [3, 4]. The objective of the present experiment on a wheat-green gram (or cowpea) — pearl millet multiple cropping system was to study the direct and residual effects of P applied to one crop on the other crops grown in succession and to find the best possible way in which a limited amount of P could be apportioned between the different crops in the rotation. An attempt has also been made to work out the P balance in soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048796
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  • 15
    Electronic Resource
    Electronic Resource
    Determination of critical level of zinc in non-calcareous soils for predicting response of wheat to applied zinc (1985)
    Springer
    Nutrient cycling in agroecosystems 8 (1985), S. 97-100 
    Details
    ISSN: 1573-0867
    Keywords: critical level ; wheat ; zinc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Studies were conducted in ten non-calcareous arid brown soils (India) to determine the critical level of soil Zn for predicting response of wheat to zinc fertilization. The per cent mean response at 5 mg kg−1 added Zn varied from 1.3 to 51.4 with a mean value of 17.5 per cent over control in terms of grain yield (g pot−1). Further, Zn application resulted in significant increase in Zn concentration in various plant parts in all the soils irrespective of the initial Zn status. The critical level of Zn in soil and plant below which response to applied Zn may be expected was found to be 1.75 mg kg−1 for 0.1 N HC1 extractable soil Zn and 1.7 mg kg−1 for plant tissue Zn.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01048892
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