Genetic nature and heritability of orobanche crenata resistance in faba bean (Vicia faba L.) [electronic resource].

Includes reference.

The present study aimed to understand the genetic nature and heritability of orobanche crenata resistance in faba bean, using a diallel analysis ofF1 generation. Five genotypes were used; Misr 1, x1714, x-1722 (tolerant), Nubaria 1 and Giza 40 (susceptible). Seed yield and its attributes (days to 90% maturity, plant height (cm.), no. of branches/plant, no. of pods/plant, no. of seeds/plant, seed yield/plant (g) and 100-seed weight (g) were recorded under both free and infested field. The orobanche resistance related criteria (Date of Orobanche emergence, no. of Orobanche spikes/ m2and Orobanche dry weight (g/m²) were recorded under infested field. The results indicated that additive effect is very important for genetic control of 90% maturity, while dominance effect plays an important role in genetic control of 100-seed weight under infested condition. Both additive and dominance effects play an important role in the genetic control of three Orobanche criteria, which related to Orobanche resistance.

Summary in Arabic.

1