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Progress in the utilization of Cajanus platycarpus (Benth.) Maesen in pigeonpea improvement
Author(s) -
Mallikarjulini,
Senapathy Senthilvel,
Jadhav Deepak R.,
Saxena Kulbhushan,
Sharma Hari C.,
Upadhyaya Hari D.,
Rathore Abishek,
Varshney Rajeev
Publication year - 2011
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2011.01870.x
Subject(s) - cajanus , biology , cytoplasmic male sterility , blight , sterility , genetics , botany , microbiology and biotechnology , horticulture
With 1 figure and 4 tablesAbstract Cultivated pigeonpea ( Cajanus cajan L. Millsp.) has a narrow genetic base; hence, utilization of wild relatives in the crossing programme would broaden its genetic base and introduce useful traits. Cajanus platycarpus ( Benth.) Maesen, an annual wild relative from the tertiary gene pool, was successfully crossed with the cultigen, utilizing hormone‐aided pollinations, embryo rescue and tissue culture techniques, and backcrossed using cultigen as the recurrent parent. Advance generation progeny showed a range of useful traits such as resistance to phytophthora blight, pod borer, bruchid and podfly resistance. Variation was also observed for plant type, growth habit and seed colour. A new source of cytoplasmic male sterility was identified in one of the progeny lines. Molecular analysis of the progeny after four backcrosses showed the presence of genomic segments from C. platycarpus accompanied by the presence of recombinant DNA sequences signifying recombination between the parental genomes.