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  • 1
    Electronic Resource
    Electronic Resource
    Intra species variation in Atylosia scarabaeoides (L.) Benth., a wild relative of pigeonpea (Cajanus cajan (L.) Millsp.) (1990)
    Springer
    Euphytica 49 (1990), S. 185-191 
    Details
    ISSN: 1573-5060
    Keywords: Atylosia scarabaeoides ; Cajanus cajan ; pigeonpea ; variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Atylosia scarabaeoides (L.) Benth., a wild relative of pigeonpea, possesses several useful genes which can be utilized for pigeonpea improvement. In the present study, 33 accessions of A. scarabaeoides were evaluated at ICRISAT Center during the 1987 rainy season for variation in some useful traits to identify parents for inter-generic hybridization. A large variation was observed for leaf components, seed size, pod length, seeds/pod, days to flowering, seed protein, sulphur amino acids, resistance to cyst nematode, phytophthora blight, sterility mosaic, fusarium wilt, pod borer, pod fly, and pod wasp. Only four accessions were found to have more than 28% protein content. Methionine and cystine contents were marginally higher than in pigeonpea but the variation was not large enough to utilize them in the breeding program. In A. scarabaeoides. accessions resistant to fusarium wilt, phytophthora blight, sterility mosaic, and cyst nematode were detected. Compared to pigeonpea, the A. scarabaeoides accessions were less susceptible to lepidopteran borer and were immune to pod fly damage. Accessions ICPW 89 and ICPW 111 in short- (100–120 days), and ICPW 94 and ICPW 118 in medium-duration (140–180 days) were identified as potential parents for use in inter-generic hybridization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00036287
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  • 2
    Electronic Resource
    Electronic Resource
    Factors affecting the protein quality of pigeonpea (Cajanus cajan L.) (1984)
    Springer
    Plant foods for human nutrition 34 (1984), S. 273-283 
    Details
    ISSN: 1573-9104
    Keywords: pigeonpea ; protein quality ; amino acids ; protease inhibitors ; storage ; processing effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Pigeonpea occupies an important place in human nutrition as a source of dietary proteins in several countries. Some of the important factors that affect the protein quality of pigeonpea have been reviewed and summarised in this paper. Among important food legumes, pigeonpea contained the lowest amount of limiting sulphur amino acids, methionine and cystine implicating the importance of these amino acids in protein quality improvement program. Large variation existed in the levels of protease inhibitors of pigeonpea varieties. The concentration of these inhibitors were significantly higher in some of the wild relatives of pigeonpea. Protein digestibility of cooked pigeonpea meal remained low and this could be due to the presence of certain compounds other than trypsin inhibitors. Pigeonpea polyphenolic compounds adversely affected the activity of digestive enzymes and this would affect the protein quality of pigeonpea. The protein quality of pigeonpea was greatly influenced by storage and processing practices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01126556
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  • 3
    Electronic Resource
    Electronic Resource
    Relationship between seed size and protein content in newly developed high protein lines of pigeonpea (1987)
    Springer
    Plant foods for human nutrition 36 (1987), S. 335-340 
    Details
    ISSN: 1573-9104
    Keywords: pigeonpea ; seed size ; high protein lines
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract To develop high protein lines, several crosses were made betweenCajanus as a source of acceptable seed size andAtylosia as a source of high protein. In the present study, 1974 single F7 plants from these intergeneric crosses were examined. Correlation coefficients among these crosses between seed size and seed protein content ranged from −0.30, (P〈0.01) to +0.28 (P〈0.01). Two crosses had significant negative correlations and one showed a significant positive correlation while in the remaining two no significant association was detected. Based on all the selections there was a highly significant negative correlation (−0.13,P〈0.01) between seed size and protein content. However, the extent of variation that could be attributed to this association was small. Observations indicated that in pigeonpea, unlike other legume and cereal crops, simultaneous improvement can be made for seed size and protein. Some high protein lines (HPL 2, HPL 7, HPL 40, and HPL 51) have been identified. Protein content of these lines ranged between 27.0 and 29.0% and 100-grain weight between 10.0 and 12.1 g.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01892354
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  • 4
    Electronic Resource
    Electronic Resource
    Distribution of seed protein fractions and amino acids in different anatomical parts of chickpea (Cicer arietinum L.) and pigeonpea (Cajanus cajan L.) (1982)
    Springer
    Plant foods for human nutrition 31 (1982), S. 347-354 
    Details
    ISSN: 1573-9104
    Keywords: amino acids ; chickpea ; pigeonpea ; protein fractions ; seed
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Studies on protein fractionation in seed coat, embryo, cotyledons and whole seed were made to observe the differences, if any, between chickpea and pigeonpea. Results indicated that globulin was the major fraction of embryo and cotyledons of these legumes. Seed-coat nitrogen was observed to be mostly comprised of nonprotein nitrogen and glutelin fractions and thus differed from other components in both chickpea and pigeonpea. The albumin fraction of cotyledons of both crops had the highest concentration of sulphur amino acids, methionine and cystine. Glutelin contained a considerably higher concentration of methionine and cystine than did globulin in chickpea and pigeonpea. This suggests that lines with higher glutelin should be identified to improve their protein quality. The amino acid compositions of different seed components did not show large differences between these two pulse crops.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01094046
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  • 5
    Electronic Resource
    Electronic Resource
    Relationship between total sulphur and sulphur amino acids in chickpea (Cicer arietinum L.) and pigeonpea (Cajanus cajan [L.] Millsp.) (1981)
    Springer
    Plant foods for human nutrition 31 (1981), S. 109-117 
    Details
    ISSN: 1573-9104
    Keywords: amino acids ; chickpea ; pigeonpea ; sulphur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Total sulphur was determined in seed meal of 30 chickpea and 24 pigeonpea cultivars by the wet digestion procedure and by using the Leco sulphur analyser. Methionine and cystine were determined after performic acid oxidation in an amino acid analyser. The two methods used for total sulphur determinations were highly correlated (r=0.943). Percent meal protein was significantly correlated (r=0.476) with total sulphur in chickpea but not in the case of pigeonpea. Total sulphur content exhibited a significant positive correlation (r=0.651) with sulphur amino acids of pigeonpea when expressed as percent of protein but not in the case of chickpea. Correlation coefficients between total sulphur and sulphur amino acids when the results were expressed as percent of sample were positive for both chickpea (r=0.494) and pigeonpea (r=0.534). The amount of sulphur in methionine and cystine accounted for 54.8% of the total sulphur in chickpea and for 75.5% in pigeonpea. In both chickpea and pigeonpea, methionine was positively and significantly correlated with cystine when they were expressed either as percent of sample or as percent of protein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01094035
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