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  • Cajanus cajan  (4)
  • Springer  (4)
  • 1995-1999  (2)
  • 1990-1994  (2)
  • 1970-1974
  • 1965-1969
  • 1930-1934
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  • Springer  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Response of the pigeonpea-Rhizobium symbiosis to salinity stress: variation among Rhizobium strains in symbiotic ability (1990)
    Springer
    Biology and fertility of soils 9 (1990), S. 49-53 
    Details
    ISSN: 1432-0789
    Keywords: Cajanus cajan ; Pigeonpea ; Rhizobium variation ; Salinity stress ; Symbiotic nitrogen fixation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary There were significant differences among pigeonpea [Cajanus cajan (L.) Millsp] Rhizobium sp. strains (IC 3506, IC 3484, IC 3195, and IC 3087) in their ability to nodulate and fix N2 under saline conditions. Pigeonpea plants inoculated with IC 3087 and IC 3506 were less affected in growth by salinity levels of 6 and 8 dS m-1 than plants inoculated with the other strains. For IC 3506, IC 3484, and IC 3195, there was a decrease in the number of nodules with increasing salinity, while the average nodule dry weight and the specific nitrogenase activity remained unaffected. However, in IC 3087, the number of nodules increased slightly with increasing salinity. Leaf-P concentrations increased with salinity in the inoculated plants irrespective of the Rhizobium sp. strain, and leaf-N concentrations decreased with increasing salinity in IC 3484 and IC 3195 only. Shoot-Na and-Cl levels were further increased in these salt-sensitive strains only at 8 dS m-1. Therefore there may be scope for selecting pigeonpea Rhizobium sp. symbioses better adapted to saline conditions. The Rhizobium sp. strains best able to form effective symbioses at high salinity levels are not necessarily derived from saline soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335861
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  • 2
    Electronic Resource
    Electronic Resource
    Comparative salinity tolerance of symbiotically dependent and nitrogen-fed pigeonpea (Cajanus cajan) and its wild relative Atylosia platycarpa (1990)
    Springer
    Biology and fertility of soils 10 (1990), S. 11-16 
    Details
    ISSN: 1432-0789
    Keywords: Atylosia platycarpa ; Cajanus cajan ; Pigeonpea ; N2 fixation ; Rhizobium ; Salinity stress ; Acetylene reduction assay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Once symbiosis between the pigeonpea cultivar ICPL 227 and the Rhizobium sp. strain IC 3024 is established, it is efficient in fixing N2 under saline conditions and can support growth comparable to N-fed plants in growth media with up to 6 dS m-1 salinity. However, the early stages of establishment of the pigeonpea-IC 3024 symbiotic system have proved sensitive to salinity. The present study showed that the number of nodules was markedly reduced at 8 dS m-1 salinity; however, nodule development and functioning were not affected by salinity in the pigeonpea-IC 3024 symbiosis. The symbiotic system of Atylosia platycarpa and Rhizobium sp. strain IC 3087 was established successfully even at 12 dS m-1 and supported growth comparable to that of N-fed plants. P levels in leaves were increased under saline conditions in N-fed and N2-fixing pigeonpea and A. platycarpa. There were no consistent differences in the leaf Na and chloride levels between N-fed and N2-fixing plants of pigeonpea and A. platycarpa. The present study suggests that the rhizobial symbiosis may not be a necessary factor for initial screening of pigeonpea and related wild species for salinity tolerance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00336118
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  • 3
    Electronic Resource
    Electronic Resource
    RFLP analysis of cytoplasmic male-sterile lines of pigeonpea [Cajanus cajan (L.) Millsp.] developed by interspecific crosses (1997)
    Springer
    Euphytica 93 (1997), S. 307-312 
    Details
    ISSN: 1573-5060
    Keywords: Cajanus sericeus ; CMS ; mtDNA ; RFLP ; pigeonpea ; Cajanus cajan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Total DNA from three putative cytoplasmic male sterile (CMS) progenies derived from crosses between the wild species Cajanus sericeus and the cultivated species Cajanus cajan, five C. cajan, one accession of C. sericeus and two genetic male sterile lines of pigeonpea were compared for their RFLP patterns using maize mitochondrial DNA (mtDNA) specific probes. Three putative cytoplasmic male sterile (CMS) progenies from the multiple cross genome transfer of pigeonpea lines (CMS 7–1, CMS 12–3, and CMS 33–1) showed hybridization patterns identical to that of C. sericeus when DNA was digested with EcoRI and HindIII and probed with maize mtDNA clones. The results suggested that these putative CMS progenies have the mitochondria of the female wild species parent. The hybridization patterns of the three male parental lines used in the development of the CMS progenies were similar in all the restriction enzyme-probe combinations except HindIII-atp6. The genetic male sterile lines, MS Prabhat and QMS 1 differed from each other in their hybridization pattern. The genomic DNA hybridization pattern of HindIII digested DNA from ICPL 87 differed from the other pigeonpea lines when probed with the maize mtDNA clones. The cluster analysis of the hybridization data suggested the occurrence of variation in the mitochondrial genome even among the cultivated species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002958623171
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  • 4
    Electronic Resource
    Electronic Resource
    Induction of Heat Shock Proteins and Acquisition of Thermotolerance in Germinating Pigeonpea Seeds (1999)
    Springer
    Biologia plantarum 42 (1999), S. 589-597 
    Details
    ISSN: 1573-8264
    Keywords: Cajanus cajan ; high temperature stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Heat shock proteins (HSPs) ranging in molecular masses from 14 to 110 kDa were induced in embryonic axes of germinating Cajanus cajan (L.) Millspaugh seeds after exposure to 40 °C for 1 or 2 h. At 45 °C, there was a marked decline in synthesis of HSPs. A close relationship was observed between HSPs induced and the growth of the germinating seeds. Pretreatment of germinating seeds at 40 °C for 1 h or 45 °C for 10 min followed by incubation at 28 °C for 3 h led to considerable thermotolerance (45 °C, 2 h) and the recovery of protein synthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1002635602823
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