Trendy

Why is hybridisation important for plants?

by Author

Why is hybridisation important for plants?

Natural hybridization has played a significant role in producing new genetic combinations and is the norm in cross-pollinated plants. It is a common way of generating genetic variability. In plants with perfect flowers (autogamous, having flowers with both stamens and pistils), cross pollination rarely occurs.

Which is possible consequence of hybridization in plants?

Consequences of Hybridization: Segregation and recombination produce a large number of genotypes in F r The number of different genotypes possible in F 2 increases geometrically with an increase in the number of segregating genes. Homozygosity increases rapidly with continued selfing. The frequency of completely homozygous plants also increases rapidly.

How to hybridize plants?

Start by writing the names of the parents (and the date if you want) on the label. You’ll need one label per intended cross.

  • On the plant you decide will bear the hybrid fruit (the female parent),choose a flower bud at the right stage.
  • Remove all other flowers from the cluster to prevent accidental pollen transfer from another bloom on the same plant.
  • Remove the petals with the forceps or tweezers. They’re easy to remove. After removing the petals,carefully pull off the staminal cone. Source: tomatosphere.letstalkscience.ca&amazon.com
  • You now have to emasculate the flower (remove its male parts).
  • Repeat with 4 or 5 other flowers to be sure of success.
  • Attach the label to the pedicel (stem) of the flower so you can better find it the next day,as the pistil will not yet be receptive.
  • The next day,harvest a fully mature (open) flower from the male parent.
  • Open its staminal cone lengthwise,inserting the forceps into one of the slits in its side and forcing it apart.
  • Run the brush against the inside of a stamen,starting at the base and dragging it upwards to pick up pollen.
  • Apply the pollen to the emasculated flower,at the very tip of its pistil,the part called the stigma,which should be a bit sticky at this point.
  • Repeat about 12 hours later in case the stigma was not receptive the first time.
    • READ:   How can I study for 12th without coaching?

    What are the types of hybridization?

    Hybridization is the mixing of two non equivalent atomic orbitals. The result of hybridization is the hybrid orbital. There are many types of hybrid orbitals formed by mixing s, p and d orbitals. The most common hybrid orbitals are sp3, sp2 and sp.