New Delhi, June 8, 2017: Union Agriculture Minister Radha Mohan Singh on Wednesday said tribal farmers submitted more than 5,000 plant varieties in last three years through Krishi Vigyan Kendras for registration at the Protection of Plant Variety and Farmers Rights Authority.
It will play an important role in the development of climate resilient and sustainable varieties in future, he said at the National Workshop on Empowerment of Farmers of Tribal Areas here.
“New technological innovations in agriculture must reach to the fields of tribal areas but before taking such steps we must keep in mind the unique conditions of these areas, which are the gift of nature and therefore, we should promote natural farming in those areas,” he said, as per an official release. (IANS)
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The dinosaurs evolved frills and thorns to attract mates
Researchers found this especially true for the species Triceratops and Styracosaurus
These are called as ornamental traits
The elaborate frills and horns of a group of dinosaurs including Triceratops and Styracosaurus might have evolved to attract mates, not as a mechanism to recognise each other as earlier believed, says a study.
It has been suggested that different species that live in the same location may evolve features in order to distinguish one another to help avoid problems such as hybridisation, where two individuals of different species produce infertile or unfit offspring.
To test this hypothesis the researchers from Queen Mary University of London examined patterns of diversity in the ornamentation of 46 species of ceratopsians, the horned dinosaurs, but found no difference between species that lived together and those that lived separately.
A previous research paper from the same university found that the frill in one ceratopsian species, Protoceratops, may have evolved under sexual selection. The new findings, published in the journal Proceedings of the Royal Society B, appear to add evidence to this across the entire group.
“If sexual selection is indeed the driver of ornament evolution in ceratopsians, as we are increasingly confident it is, demonstrating it through different lines of evidence can provide a crucial window into tracing its effects over potentially huge time-scales,” said lead author of the new study Andrew Knapp.
Selection makes many organisms evolve different attributes for sex. For example, peacocks maintain elaborate tails and fruit flies perform dances. The researchers also found evidence that ornamental traits seemed to evolve at a much faster rate than other traits.
“We have shown that species recognition, one of the commonest explanations, is unlikely to be responsible for the diversity or origin of ornamentation in this group,” Knapp added. IANS