摘要
Seed germination in root holoparasites depends on receipt of certain chemical signals from the host plant. It is possible to induce germination in such seeds without the association of hosts by using growth regulators under in vivo and in vitro conditions. IAA, GA3 and Kinetin have been used to induce seed germination in Aeginetia indica L. to analyse the possible ways of exploiting knowledge of germination for the management of this weed. Seeds pre treated with 50 mg·L–1 of GA3 showed the production of aseptate, uninucleate root hair-like tubules, which probably help in the anchorage with host root. Under in vitro, GA3 (5.0 and 7.5 mg·L–1) has been found to induce and enhance percentage of seed germination. Therefore, it is concluded that GA3 could be used to bring suicidal germination of seeds thereby manage this parasitic weed effectively. Further production of uninucleate tubules and organisation of conventional bi-polar seedling under the influence of GA3 is being reported for the first time in this taxon.
Seed germination in root holoparasites depends on receipt of certain chemical signals from the host plant. It is possible to induce germination in such seeds without the association of hosts by using growth regulators under in vivo and in vitro conditions. IAA, GA3 and Kinetin have been used to induce seed germination in Aeginetia indica L. to analyse the possible ways of exploiting knowledge of germination for the management of this weed. Seeds pre treated with 50 mg·L–1 of GA3 showed the production of aseptate, uninucleate root hair-like tubules, which probably help in the anchorage with host root. Under in vitro, GA3 (5.0 and 7.5 mg·L–1) has been found to induce and enhance percentage of seed germination. Therefore, it is concluded that GA3 could be used to bring suicidal germination of seeds thereby manage this parasitic weed effectively. Further production of uninucleate tubules and organisation of conventional bi-polar seedling under the influence of GA3 is being reported for the first time in this taxon.
