Vol. 10, Issue 1 (2021)

Author(s):
JG Mistri, KB Kathiria, SS Macwana and RM Chavadhari

Abstract:
The experiment was conducted to study the relative heterosis, better parent heterosis in F₁, inbreeding depression in F₂ generation, broad and narrow sense heritability’s and genetic advance in bidi tobacco. Total six F₁ hybrids were generated using seven parents and thirteen quantitative traits were studied. The highly significant and positive mid-parent and better parent heterosis was observed in seed oil yield per plant and component characters viz., seed oil content, seed yield per plant and test weight in all the crosses. Selfing caused significant decrease in the measurement of all the characters in F₂ populations, except for days to flowering, plant height and days to capsule maturity in majority crosses. Similarly, high estimates of narrow sense heritability along with high genetic advance was observed in all crosses for seed oil yield per plant. This suggested the presence of additive/fixable gene effect and this character could be further improved by adopting selections in succeeding segregating generations.