The nature and magnitude of genetic variance and combining ability were studied in a
lO-parent diallel of opium poppy (papaver somniferum L.) for days to flowering and
maturity. The analysis revealed partial dominance in Fl and overdominance in F2 for days
to flower and overdominance in both the generations for days to maturity. Combining
ability analysis indicated the predominance of nonadditive gene action (crs) for both traits..
The parent BR-9 possesses maximum number of recessive genes and was also the best
general combiner for both the traits. The crosses Gz X KDB and Gz x BR-9 for days to flower
and KDB x BR-9 for days to maturity were the best combinations with additive x additive
gene interaction. Abreeding programme to develop early maturing genotypes is discussed.
Keywords: Combining ability, diallel, Papaver somniferum.
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
SUDHIR SHUKLA AND K. R. KHANNA info_circle