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    Pigeonpea composite collection and identification of germplasm for use in crop improvement programmes

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    S11ArtUpadhyayaPigeopeaNothomNodev.pdf (343.3Kb)
    Date
    2011-04
    Author
    Upadhyaya, Hari D.
    Reddy, K.N.
    Sharma, S.
    Varshney, Rajeev K.
    Bhattacharjee, R.
    Singh, S.
    Gowda, C.L.L.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Pigeonpea (Cajanus cajan (L.) Millsp. is one of the most important legume crops as major source for proteins, minerals and vitamins, in addition to its multiple uses as food, feed, fuel, soil enricher, or soil binder, and in fencing, roofing and basket making. ICRISAT's genebank conserves 13,632 accessions of pigeonpea. The extensive use of few parents in crop improvement is contrary to the purpose of collecting a large number of germplasm accessions and has resulted in a narrow base of cultivars. ICRISAT, in collaboration with the Generation Challenge Program, has developed a composite collection of pigeonpea consisting of 1000 accessions representing the diversity of the entire germplasm collection. This included 146 accessions of mini core collection and other materials. Genotyping of the composite collection using 20 microsatellite or simple sequence repeat (SSR) markers separated wild and cultivated types in two broad groups. A reference set comprising 300 most diverse accessions has been selected based on SSR genotyping data. Phenotyping of the composite collection for 16 quantitative and 16 qualitative traits resulted in the identification of promising diverse accessions for the four important agronomic traits: early flowering (96 accessions), high number of pods (28), high 100-seed weight (88) and high seed yield/plant (49). These accessions hold potential for their utilization in pigeonpea breeding programmes to develop improved cultivars with a broad genetic base. Pigeonpea germplasm has provided sources of resistance to abiotic and biotic stresses and cytoplasmic-male sterility for utilization in breeding programmes.
    http://dx.doi.org/10.1017/s1479262110000419
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/2030
    Digital Object Identifier (DOI)
    http://dx.doi.org/10.1017/s1479262110000419
    IITA Subjects
    Genetic Improvement; Grain Legumes; Plant Genetic Resources
    Agrovoc Terms
    Cajanus Cajan; Grain Legumes; Genotypes; Composite Set; Cytoplasmic-Male Sterility; Diversity; Mini Core Collection; Pigeonpea; Reference Set; Germplasm; Icrisat
    Regions
    Africa; Asia; East Africa; North America; South Asia; Southern Africa
    Countries
    Dominican Republic; India; Kenya; Malawi; Nepal; Tanzania; Uganda
    Journals
    Plant Genetic Resources: Characterization and Utilization
    Collections
    • Journal and Journal Articles5283
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