
%0 Journal Article
%A Srivastava, RK 
%A Sharma, JR 
%T Estimation of genetic variance and allied parameters through biparental mating in opium poppy (<I>Papaver somniferum</I> L.)
%J Australian Journal of Agricultural Research
%D 1987/12/01
%V 38
%N 6
%P 1047-1052
%K 
%R https://doi.org/10.1071/AR9871047
%U https://www.publish.csiro.au/paper/AR9871047 
%X Genetic variances and allied genetic parameters were estimated for eight economic traits through biparental mating designs in two populations: (i) a local land race, and (ii) a segregating F2 population of Indian opium poppy. Estimates of additive variance were larger than the dominance variances (o2A > o2D) or environmental variance (+-R > n¦2) for the majority of the eight traits examined. Narrow sense heritability (h2NS) estimates were high (60-89%) for five traits, moderate (28.3%) for peduncle length and low (< 13%) for capsule index and morphine content in the local land race, and high (57-93%) for all the eight characters in the F2 population. Average degree of dominance in the local population leaned heavily towards overdominance (G > 1 .O) for six charcters (four in negative and two in positive directions) and towards partial dominance (G < 1.0) for the remaining two traits: latex yield and flowering time (both in negative direction). Accordingly, combination breeding for latex yield and flowering duration, (F1) hybrid breeding for seed yield, morphine content and capsule number and/or population breeding for other traits, were suggested for rapid genetic improvement of opium poppy. 
