The below mentioned article provides a study note on the Artificial Induction of Polyploidy. In recent years, a number of methods have been worked out to induce polyploidy in plants. Some of them are described below: 1. By Radiation: Polyploidy can be induced in plants by exposing their certain parts, such as vegetative buds and flower buds, to radiations of [...]
The below mentioned article provides a close view on the Polyploidy and Evolution of Species. The polyploidy has played an important role in evolution of new varieties and species in nature. Angiosperms and Pteridophytes have very high numbers of polyploid species in nature. More than 35 per cent angiosperms are polyploids. According to Manton (1950), among all the plant groups, [...]
The following points highlight the two main causes of ploids. The causes are: 1. Aneuploidy 2. Euploidy. Ploids: Cause # 1. Aneuploidy: The individuals carrying chrornosome numbers other than somatic or diploid (2n), which are not true multiples of basic chromosome number or genome are called heteroploids or aneuploids. Thus aneuploidy results due to an addition of loss of less [...]