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By applying 20mgl −1 of α-naphthaleneacetic acid (NAA) potassium salt to ‘Algerie’ loquat tree flowers prior to or at anthesis pollen grain germination was signficantly inhibited and pollen tube growth was halted, both in vivo and in vitro conditions, thus ovule fertilization and fruit set were prevented. These effects of NAA are direct since stigmas were not damaged or dried off by the treatment...
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