Posts

Showing posts with the label #adsense # Neodarwinism # blogging

Use of apomixis in Plant Breeding

Image
 Use of  apomixis in Plant Breeding  The Greek terms "APO" (away from) and "mixed" (the process of mixing or mingling) are the roots of the word "apomixis." It describes how a plant grows from a seed without the need for fertilization or typical sexual reproduction. The easiest way to define apomixis is as a reference to the asexual process. The resultant plant is a female parent plant clone. The female gametophyte, or embryo sac, is created during sexual reproduction by developmental processes that take place inside the ovule. After double fertilization, the resultant components are the embryo and endosperm. In higher plants, apomixis is a common occurrence. More than 35 groups of plants, including the Gramineae, Rosaceae, Compositae, and Rutaceae, are known to be apomictic. Apomixis is seen in major grains like wheat and maize. Apomixis Types There are three commonly known kinds of apomixis: adventitious embryony, apospory, and diplospory. Diplospory T...

Neodarwinism : A detailed review

Image
  Neodarwinism  : A detailed review  Evolutionary theory is still based on the Modern Synthesis, sometimes known as "Neo-Darwinism," which emerged from the reconciliation of Mendel's genetic studies with Darwin's theory of natural selection. Neo-Darwinism is an evolutionary theory that combines contemporary population genetics and natural selection to synthesize Charles Darwin's theory of evolution. The word originated in 1896 to refer to the beliefs of August Weismann (1834–1914), who maintained that natural selection was the only significant process that could explain biological evolution and that the inheritance of acquired traits was impossible according to his germ-plasm theory. Neodarwinism : This is a modified version of Darwin's theory that takes into account the contemporary synthesis of Mendelian genetics and natural selection. The accumulation of genotypic variants within a gene pool is the primary mechanism causing speciation. The Modern Synthetic ...