April, 2019

• 6 April

  Self Incompatibility: An intelligent journey to variation

  

  Definition Self-incompatibility is the inability of a pollen to fertilize the stigma of a same flower or the other flower of the same plant. It is a general name for several genetic mechanisms in angiosperms, which prevent self-fertilization and encourage outcrossing. Koelreuter 1st reported SI (Self incompatibility) in Verbascum phoeniceum …

  Read More »
• 6 April

  Introduction to Male Sterility

  

  Male sterility The male reproductive organs are mal-developed or aborted so that no viable pollens will be formed. This condition is known as male sterility (M.S) and may be inherited due to genetic, cytoplasmic or interaction of both genetic and cytoplasmic causes.   History of Male Sterility The first documentation …

  Read More »
• 3 April

  Fungal Diseases of Rice

  

  Rice, Oryza sativa is one of the main staple crops in the whole world especially in Asia. It provides carbohydrate and calories daily to about half of the world population. Besides, in some countries, this annual plant acts also as an economic crop and serves as a source of foreign …

  Read More »
• 3 April

  Lactophenol Cotton Blue: Most Widely Used Stain in Mycology

  

  Introduction Lactophenol cotton blue (LPCB) is a widely used staining agent used in laboratories to observe chitin walled organisms (e.g. Fungi). It generally gives the specimen a blue color under microscope and helps to find them easily. It is also very simple to prepare. Composition This mounting medium is composed …

  Read More »

March, 2019

• 30 March

  Chromosomal Aberration: Structural and Numerical

  

  What is Chromosomal Aberration? Any type of change in the structure and number of chromosomes due to certain irregularities during cell division is known as chromosomal aberration. Broadly such aberrations are divided into two major groups. Structural aberration Numerical aberration Again, structural aberrations are of 4 types. Such as: Deletion …

  Read More »
• 30 March

  Solenoid Model: The Second Level of Packing

  

  In the nucleosome model of chromosome, we have discussed about the fundamental organizational unit of chromosome termed as nucleosome. That article gave us a simplistic idea about how the repeated nucleosomes are arranged. The figure in the right hand side clarifies that the nucleosome model provides us with the insight …

  Read More »
• 30 March

  Nucleosome Model of Chromosomes

  

  Let’s kick off this discussion with a simple calculation about the length of DNA in a single diploid human cell. We know according to Watson and Crick model of double helix DNA, each two base pairs has a distance of 3.4 A. There are approximately 6.4 billion base pairs (bp) …

  Read More »
• 23 March

  The Megasporangium: Types, Parts and Functions

  

  Megasporangium is the structure of a plant body that contains a female reproductive organ. It can be called an ovule.  It consists of nucellus and integument. The ovule can be formed in different sizes and shapes. Many times it changes its form during the course of its development.   Mature …

  Read More »
• 19 March

  Coliform Bacteria: An Indicator of Water Contamination

  

  Coliform is commonly known as ” indicator organisms“, refers to a wide groups of bacteria ( about 16 species) that found throughout the environment and used to evaluate the water quality.  These organisms have a wide distribution in soil, water surface, vegetations as well as on the skin or intestinal …

  Read More »
• 11 March

  The Best Medical Cannabis Dispensaries in Toronto

  Looking for the best medical cannabis dispensaries in Toronto? Look no further! Here at Medical Cannabis Dispensaries, they offer a variety of high-quality products to help patients with a variety of conditions. Whether you are looking for dried flower, concentrates, edibles, or topicals, these below mentioned dispensaries have something to …

  Read More »