(i) Applications / Importances of triploid plants :
• Autotriploidy induces gigas effect i.e., large-sized leaves, flowers, fruits and seeds.
• Autotriploids are sterile (with faulty pairing and distribution of chromosomes and abnormal gametes) and reproduce vegetatively only. They are useful for the production of seedless plants.
(ii) Applications / Importances of haploid plants :
• Haploid plants have been used in breeding programmes of rice, wheat, barley, Brassicaspps, tobacco, potato, etc.
• A doubled haploid strain are produced in only two years a net saving of 4 years for the production of homozygous lines by selfing or close breeding of both self and cross pollinated crops. They may be released directly as a variety if it performs well in yield trials.
• Haploid plants are most suitable for the study of recessive mutations.
