Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Types of Parthenocarpy
Three types of Parthenocarpy are generally recognized:
Genetical Parthenocarpy is observed in many species cultivated for their fruit. It arises due to mutations or hybridization. Generally parthenocarpic varieties have sterile pollen so that the pollination stimulus is available, but fertilization does not take place. As a result, a fruit is produced which has no seeds. The famous navel orange has arisen from a normal seeded Citrus variety through mutation in an axillary bud, which formed a branch bearing seedless fruits. Several cultivated varieties of grapes and cucumber have also resulted from bud mutations.
Environmental Parthenocarpy is the result of some environmental conditions such as frost or low temperature which interferes with the normal reproductive process. In tomato, for instance, cultivation under low temperature and high light intensity can induce Parthenocarpy. Under these conditions pollination is so poor that seeds are not produced but ovary is activated to form the fruit Induced Parthenocarpy involves treatment of the flowers with certain plant growth regulators. Auxins and gibberellins at low concentrations have been successfully utilized for induction of parthenocarpy in a large number of plants which otherwise bear seeded fruits. Seedless guava, tomato, and straw- fruits have been obtained by this method. Parthenocarpy is important in horticulture because seedless fruits are more convenient to consume and are particularly suitable for the industry manufacturing jams, jellies and fruit juices. Gibberellins also cause fruit enlargement (in grapes which are considered commercially beneficial for packaging and marketing, and also cause looseness of bunches).
Analysis of Genomic Equivalence of Nuclei Towards the ending of 19th century August Weismann had proposed that during cleavage the genetic determinants (later shown to be chro
What are some examples of the energetic function of organic molecules? As they are complex molecules, presenting lots of chemical bonds, organic molecules keeps large amount of
How does being able to reproduce asexually benefit the plant?
How different are gymnosperms from bryophytes and pteridophytes? Gymnosperms are not cryptogamic as bryophytes and pteridophytes are. They are phanerogamic and so they form flo
SIGNIFICANC E OF GASTRULATION - It results in the formation of three germ layers. It also resutls in the formation of different organs & organ systems. Gastrulation is e
Why is there a concern on waste water?
life cycle of ascomycota
what exactly is oxidation and reduction potential and how its an imp. factor in spoiling meat
What is meant by the expression 'infant mortality'? Infant mortality refers to the number of babies in a population who die at the age of 1 year or less. It is usually express
Explain what is Light Microscope - Microscopy Modern light microscopes are compound microscopes. Here the magnified image formed by the objective lens is further enlarged by on
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd