Which of the following act(s) as strong germinator for parasitic weeds?

Correct option is A

✅ (a) Strigolactones
· Strigolactones are plant hormones exuded by roots into the soil.
· They stimulate the germination of parasitic weed seeds like Striga and Orobanche.
· Act as signaling molecules in the rhizosphere for establishing symbiotic and parasitic interactions.
❌ (b) ABA
· Abscisic acid (ABA) is a stress hormone that induces seed dormancy and inhibits germination.
· Does not act as a germination stimulant for parasitic weeds.
❌ (c) Both [A] and [B]
· Incorrect because ABA suppresses germination, opposite to strigolactones' function.
· Thus, both cannot act as germinators.
❌ (d) Temperature and pressure
· Temperature influences germination but is not a chemical signal specific to parasitic weeds.
· Pressure has no significant role in parasitic seed germination.