The landraces

• Vaid's ICS, Lucknow
• 16, Nov 2021

Why in News?

Among the winners of this year’s Padma awards is Rahibai Popere, popularly known as Seedmother, from Akole taluka of Ahmednagar, Maharashtra.

• Her Padma Shri is a recognition of her work that has helped save hundreds of landraces (wild varieties of commonly grown crops) at the village level.

Landraces refer to naturally occurring variants of commonly cultivated crops. These are as opposed to commercially grown crops, which are developed by selective breeding (hybrids) or through genetic engineering to express a certain trait over others.

Impact of selection and breeding on landraces:

Biodiversity allows a natural mechanism for crops to develop traits to face challenging situations. However, given the large-scale human interference in crop selection, that ability is now lost in most commercial crops.

• Crop improvement through selection and breeding over several decades has narrowed the genetic base of most crops.

Need for and significance of landraces:

Amid the threat of climate change, a challenge before scientists and policymakers is to develop varieties that can withstand both abiotic and biotic stresses.

• Naturally occurring landraces have a large pool of still untapped genetic material, which can provide solutions.
• Genetic diversity is nature’s survival mechanism. The wider the gene pool, the more the chance of developing a trait that can help in surviving extreme climate events.

Way ahead:

Much remains to be understood about the germplasms of the landraces. Research is in the early stages.

It is necessary to understand how these landraces can contribute to climate-resilient agriculture; nutritional profiling too can hold the key to fighting deficiencies, as many landraces are richer in nutrients than commercially grown variants.

FACTS FOR PRELIMS:

Next COP venues:

The 2021 UN Climate Change Conference, COP26, concluded recently at Glasgow.

• At the end of the conference, the council decided that the 2022 edition of the Conference of Parties, or the 27th COP, will take place at Sharm El-Sheikh, Egypt, and the 28th edition in 2023 will be held in the UAE.

Kashi corridor project:

• The project connects the Kashi temple with the ghats of the Ganga, with a paved walkway around 320 metres long and 20 metres wide.
• It will also have facilities for a museum, library, a facilitation centre for pilgrims and a Mumuksha Bhawan (salvation house).