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!
Androgenic haploids
Androgenic haploids of some species, such as wheat, mustard and tobacco, can also be raised through isolated microspore pollen culture (Pollen cultures). It must be realized that in spite of serious efforts androgenic haploids have not been possible in many other economically important plants. In-vitro gynogenesis is another approach to produce haploids (Yang and Zhou, 1990). In this technique unfertilized ovules are cultured on media which stimulate the egg (parthenogenesis) or any other haploid cell of the embryo sac (apogamy) to undergo embryogenic development without fertilization. In-vitro gynogenesis, first observed in Hordeum vulgare by San Noeum (1967), has now been reported in at least 16 species. This technique of haploid production is especially useful in plants in which the androgenic response is unsatisfactory, a large proportion of pollen plants are non-haploids or albinos, as in many cereals.
Minerals and reproduction The mechanism of mineral-reproduction interactions is not fully understood because of the complexity of neuro-hormonal dialogue. Some minerals act direc
TYPES OF CELL WALL Cell wall differentiated into the following layers : 1. Primary Cell Wall 2. Secondary Cell wall 3. Tertiary Cell wall 1 .
Q. In the phase when the cell is not dividing interphase is there activity within the cell nucleus? In the interphase there is intense metabolic activity in the cell nucleus th
Technique: Careful re-opening of sternum and release of steinum from the underlying adhesion is done. Femoral artery and vein are exposed for going on femoro fenioral bypass
How different is the fish epidermis from the amphibian epidermis? The fish epidermis is very thin and having mucus-secreting cells. The fish skin does not present keratin. The
The risk for IE among IV drug abusers, 2 to 5 per cent per patient- year, is estimated to be several fold greater than that of patients with rheumatic heart disease or prosthetic v
Q. Bracketed Keys to identifying plants and animals? In bracketed keys two couplet leads of the same rank are bracketed together. The alternative clues or couplets are written
Horizontal Chart: Horizontal chart which read from left to right are occasionally used. The pyramid lies horizontally instead of standing in the vertical position. The line of
Vitamin a deficiency leads to a variety of disorders of the eyes and this effects the vision. Some of the disorders due to vitamin A deficiency are given below. 1) Night Blindne
Cytoplasmic Reorganisation Meiosis is also associated with major reorganisation of the cytoplasm of MMCs and microspores. Microspore mother cell shows high metabolic activity.
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd