In the article titled How Science Could Spark a Second Green Revolution, the author reports that a Pennsylvania State University professor and his colleagues have been working to develop crops with longer roots. Growing steeper and deeper into the ground, these roots will be able to find more moisture and nutrients.
According to the report, the team has been able to identify root traits that can produce “two or three times more food without fertilizer.” The professor, Jonathan Lynch, uses traditional cross-breeding techniques, and has also identified an unrecognized trait in corn that can improve yields eightfold in drought conditions.
The focus on root traits and drought resistant crops has a sound basis. In the first green revolution, focus was on fertilizer use and improved irrigation to increase agricultural productivity. However, with diminishing availability of good land, we need crops that can grow under hostile conditions.
Crops will have to be cultivated on marginal lands where both water and artificial fertilizer will be scarce. Additionally, climate change is likely to make presently agriculture-friendly regions drier and hotter. It is in this context that crops with roots that can get water and nutrients from deeper soil become significant.
Though Lynch had used traditional cross-breeding techniques, it is generally considered that Genetically Modified (GM) crops hold the key to the second green revolution. Though GM crops are facing opposition on safety and other considerations, genetic engineering seems to be only real solution for the likely food shortages in the future, according to many experts.
Read the full article at Checkbiotech.
