Interspecific hybridization to introduce useful genetic variability for pigeonpea improvement
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Date
2016-11-30
Date Issued
2017-02-10
ISI Journal
Impact factor: 0.282 (Year: 2016)
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Citation
Shivali Sharma, Hari D. Upadhyaya. (10/2/2017). Interspecific hybridization to introduce useful genetic variability for pigeonpea improvement. The Indian journal of genetics & plant breeding: official publication of the Indian Society of Genetics & Plant Breeding, 76 (2).
Abstract
Pigeonpea (Cajanus cajan (L. ) Millspaugh) is an import ant grain legume grown in t ropical and subt ropical regions of t he world. Narrow
genet ic base coupled wit h low levels of resist ance against import ant biot ic/ abiot ic st resses in cult ivat ed pigeonpea is t he major
const raint aff ect ing it s product ion and product ivit y globally. Wild Cajanus species are t he reservoir of many import ant genes including
resist ance/ t olerance t o diseases, insect pest s and drought , and good agronomic t rait s and can be ut ilized t o improve t he crop cult ivars,
enrich variabilit y, and broaden t he genet ic base. Ut ilizat ion of wild Cajanus species has cont ribut ed f or t he development of cyt oplasmic
male st erilit y (CMS) syst ems f or pigeonpea improvement . Prebreeding populat ions involving promising wild Cajanus accessions
belonging t o secondary and t ert iary gene pools as donors and popular pigeonpea cult ivars as recipient s were developed f or enriching
variabilit y f or pigeonpea improvement . Considerable variabilit y was observed in t hese populat ions f or morphoagronomic t rait s and f or
biot ic st resses. Two advanced backcross populat ions derived f rom wild Cajanus species are being genot yped t o ident if y QTLs
associat ed wit h agronomic t rait s f or f urt her deployment in pigeonpea improvement programs. Agronomically desirable and disease
resist ant int rogression lines have been ident if ied and shared wit h breeding programs f or developing new highyielding and
climat eresilient pigeonpea cult ivars wit h a broad genet ic base.
