<span style="font-size:12.0pt;font-family:"Times New Roman";mso-fareast-font-family: HiddenHorzOCR;mso-bidi-font-weight:bold" lang="EN-US">Genetic Study of Plant Spread in <i>Cuphea procumbens</i> </span>

Abstract

Six parents half diallel of <i>Cuphea procumbens </i>was made and 15 each F₁, sand F₂, s along with 6 parents were evaluated to study the genetics of plant spread. Non-significant2 and significant regression coefficient from zero (B-O) showed that the assumptions of diallel analysis are fulfilled and additive dominance model is an adequate deseription of data. The high value of over domince obtained by (H₁/ D)^1/2 and (s₂s/s₂g)_1/2 and regressiom line cutting below Wr axis indicated the prevalence of over-dominance in both F₁ and F₂ generation. Parent 3 and 4 possessed maximum dominant alleles in both the generations. The pattern of parental order of dominance was almost same from Wr-Vr graph and standard deviation graph. On the basis of per-se performance and hetrosis hybrids 1× 3, 5× 6 and 1 × 5 were best indicating that hybrids may be selected on the basis of per-se performance. The maximum betrosis of 36.8% was noticed in cross 1× 3. Considering the gene actions involved, the recurrent selection followed by bi-parental mating may be adopted to genetic upgradation in plant spread.